Synthesis, Pharmacological Characterization, and Structure–Activity Relationship Studies of Small Molecular Agonists for the Orphan GPR88 Receptor
摘要:
GPR88 is an orphan G-protein-coupled receptor (GPCR) enriched in the striatum. Genetic deletion and gene expression studies have suggested that GPR88 plays an important role in the regulation of striatal functions and is implicated in psychiatric disorders. The signal transduction pathway and receptor functions of GPR88, however, are still largely unknown due to the lack of endogenous and synthetic ligands. In this paper, we report the synthesis of a GPR88 agonist 2-PCCA and its pure diastereomers, which were functionally characterized in both transiently and stably expressing GPR88 HEK293 cells. 2-PCCA inhibited isoproterenol-stimulated cAMP accumulation in a concentration-dependent manner in cells expressing GPR88 but not in the control cells, suggesting that the observed cAMP inhibition is mediated through GPR88 and that GPR88 is coupled to G alpha(i). 2-PCCA did not induce calcium mobilization in GPR88 cells, indicating no G alpha(q)-mediated response. A structure activity relationship (SAR) study of 2-PCCA was also conducted to explore the key structural features for GPR88 agonist activity.
Synthesis, Pharmacological Characterization, and Structure–Activity Relationship Studies of Small Molecular Agonists for the Orphan GPR88 Receptor
摘要:
GPR88 is an orphan G-protein-coupled receptor (GPCR) enriched in the striatum. Genetic deletion and gene expression studies have suggested that GPR88 plays an important role in the regulation of striatal functions and is implicated in psychiatric disorders. The signal transduction pathway and receptor functions of GPR88, however, are still largely unknown due to the lack of endogenous and synthetic ligands. In this paper, we report the synthesis of a GPR88 agonist 2-PCCA and its pure diastereomers, which were functionally characterized in both transiently and stably expressing GPR88 HEK293 cells. 2-PCCA inhibited isoproterenol-stimulated cAMP accumulation in a concentration-dependent manner in cells expressing GPR88 but not in the control cells, suggesting that the observed cAMP inhibition is mediated through GPR88 and that GPR88 is coupled to G alpha(i). 2-PCCA did not induce calcium mobilization in GPR88 cells, indicating no G alpha(q)-mediated response. A structure activity relationship (SAR) study of 2-PCCA was also conducted to explore the key structural features for GPR88 agonist activity.
[EN] MODULATORS OF G PROTEIN-COUPLED RECEPTOR 88<br/>[FR] MODULATEURS DE RÉCEPTEUR 88 COUPLÉ AUX PROTÉINES G
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2011044212A1
公开(公告)日:2011-04-14
The present disclosure is generally directed to compounds which can modulate G-protein coupled receptor 88, compositions comprising such compounds, and methods for modulating G-protein coupled receptor 88.
The present disclosure is generally directed to compounds which can modulate G-protein coupled receptor 88, compositions comprising such compounds, and methods for modulating G-protein coupled receptor 88.