Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Activity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cellsActivity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cells

Activity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cellsActivity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cells

Activity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cellsActivity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cells

Activity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cellsActivity at rat mGluR8 receptor measured as intracellular calcium concentration in HEK293 cells

Agonist activity at human recombinant mGlu8 receptor expressed in AV12 cells assessed as inhibition of forskolin-stimulated cAMP production after 1 hr by fluorescence assayAgonist activity at human recombinant mGlu8 receptor expressed in AV12 cells assessed as inhibition of forskolin-stimulated cAMP production after 1 hr by fluorescence assay

Agonist activity at human recombinant mGlu8 receptor expressed in AV12 cells assessed as inhibition of forskolin-stimulated cAMP production after 1 hr by fluorescence assayAgonist activity at human recombinant mGlu8 receptor expressed in AV12 cells assessed as inhibition of forskolin-stimulated cAMP production after 1 hr by fluorescence assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8

Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8

Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8

Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at rat mGlu8 receptor expressed in HEK cell co-expressing Galpha15 (unknown origin) assessed as reduction in intracellular Ca2+ mobilization by Fluo-4-AM dye based fluorescence assayAgonist activity at rat mGlu8 receptor expressed in HEK cell co-expressing Galpha15 (unknown origin) assessed as reduction in intracellular Ca2+ mobilization by Fluo-4-AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK cell co-expressing Galpha15 (unknown origin) assessed as reduction in intracellular Ca2+ mobilization by Fluo-4-AM dye based fluorescence assayAgonist activity at rat mGlu8 receptor expressed in HEK cell co-expressing Galpha15 (unknown origin) assessed as reduction in intracellular Ca2+ mobilization by Fluo-4-AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK cell co-expressing Galpha15 (unknown origin) assessed as reduction in intracellular Ca2+ mobilization by Fluo-4-AM dye based fluorescence assayAgonist activity at rat mGlu8 receptor expressed in HEK cell co-expressing Galpha15 (unknown origin) assessed as reduction in intracellular Ca2+ mobilization by Fluo-4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate productionAgonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate production

Agonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate productionAgonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate production

Agonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate productionAgonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate production

Agonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate productionAgonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate production

Agonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate productionAgonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate production

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8

Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8

Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8Inhibition of forskolin stimulated cAMP production in RGT cells expressing recombinant human mGluR8

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate productionAgonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate production

Agonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate productionAgonist activity at rat mGluR8 receptor expressed HEK293 cells assessed as effect on inositol phosphate production

Antagonist activity at human recombinant mGlu8 stably expressed in golden hamster AV12 cell membrane co-expressing Galpha15 assessed as reduction in glutamate-induced calcium influx incubated for 90 to 120 min by Fluo-4-AM dye based FLIPR assayAntagonist activity at human recombinant mGlu8 stably expressed in golden hamster AV12 cell membrane co-expressing Galpha15 assessed as reduction in glutamate-induced calcium influx incubated for 90 to 120 min by Fluo-4-AM dye based FLIPR assay

Antagonist activity at human recombinant mGlu8 stably expressed in golden hamster AV12 cell membrane co-expressing Galpha15 assessed as reduction in glutamate-induced calcium influx incubated for 90 to 120 min by Fluo-4-AM dye based FLIPR assayAntagonist activity at human recombinant mGlu8 stably expressed in golden hamster AV12 cell membrane co-expressing Galpha15 assessed as reduction in glutamate-induced calcium influx incubated for 90 to 120 min by Fluo-4-AM dye based FLIPR assay

Antagonist activity at human recombinant mGlu8 stably expressed in golden hamster AV12 cell membrane co-expressing Galpha15 assessed as reduction in glutamate-induced calcium influx incubated for 90 to 120 min by Fluo-4-AM dye based FLIPR assayAntagonist activity at human recombinant mGlu8 stably expressed in golden hamster AV12 cell membrane co-expressing Galpha15 assessed as reduction in glutamate-induced calcium influx incubated for 90 to 120 min by Fluo-4-AM dye based FLIPR assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Positive allosteric modulation of mGluR8 (unknown origin) by calcium mobilization assayPositive allosteric modulation of mGluR8 (unknown origin) by calcium mobilization assay

Positive allosteric modulation of mGluR8 (unknown origin) by calcium mobilization assayPositive allosteric modulation of mGluR8 (unknown origin) by calcium mobilization assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assayAgonist activity at rat mGlu8 receptor expressed in HEK293 cells assessed as IP1 accumulation by IP-One functional assay

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assayAgonist activity at rat mGluR8 expressed in HEK293 cells assessed as induction of inositol phosphate production by HTRF assay

Agonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate productionAgonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate production

Agonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate productionAgonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate production

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Positive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assayPositive allosteric modulation of rat mGlu8 receptor expressed in HEK cells co-expressing Galphai5 assessed as increase in glutamate-induced calcium flux incubated for 142 secs followed by glutamate addition measured after 120 secs by Fluo4-AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Agonist activity at human mGluR8 assessed as effect on cAMP production in RGT cellsAgonist activity at human mGluR8 assessed as effect on cAMP production in RGT cells

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 agonist activity against forskolin stimulated c-AMP formation in rat non neuronal cells

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Metabotropic glutamate receptor 8 antagonist activity to influence forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 antagonist activity to influence forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 antagonist activity to influence forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 antagonist activity to influence forskolin stimulated c-AMP formation in rat non neuronal cells

Metabotropic glutamate receptor 8 antagonist activity to influence forskolin stimulated c-AMP formation in rat non neuronal cellsMetabotropic glutamate receptor 8 antagonist activity to influence forskolin stimulated c-AMP formation in rat non neuronal cells

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate productionAgonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate production

Agonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate productionAgonist activity at mGlu8 receptor expressed in HEK 293 cells assessed as effect on inositol phosphate production

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate readerAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular calcium level after 1 hr by fluorescence microplate reader

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting methodAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as [3H]inositol phosphate accumulation after 30 mins by scintillation and luminescence counting method

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Agonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation countingAgonist activity at rat mGlu8 receptor expressed in HEK293 cells co-transfected with G-protein alpha and EAAC1 assessed as increase in intracellular inositol phosphate accumulation after 1 hr by scintillation counting

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.Pharmacological Assay: Metabotropic glutamate receptors were transiently transfected in HEK293 cells by electroporation as described elsewhere (Brabet I. et al., 1998) and plated in 96-well microplates. The high affinity glutamate transporter EAAC1 was co-transfected with the receptor in order to avoid any influence of glutamate released by the cells in the assay medium. In the experiments carried out by the inventors, Group-III mGluRs were co-transfected with a chimeric G-protein which couples the activation of the receptor to the phospholipase-C (PLC) pathway. Thus receptor activation induces production of inositol phosphate (IP) which in turn induces intracellular Ca2+ release. Receptor activity was then determined by measurement of the IP production or Ca release as already described (Goudet C. et al., PNAS 2004). For intracellular calcium measurements, cells expressing mGluRs were loaded with Ca2+-sensitive fluorescent dye Fluo-4 AM (Invitrogen, Cergy-Pontoise, France) dissolved in Hanks' balanced Salt Solution.

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay

Agonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assayAgonist activity at mGlu8 (unknown origin) expressed in HEK293 cells coexpressing chimeric Gq/i protein assessed as increase in intracellular calcium accumulation by Fluo-4 AM dye based fluorescence assay