20:4 Lyso PI 是一种G蛋白偶联受体GPR55的选择性激动剂。在表达GPR55的HEK293细胞中,其EC50值为10 nM,可以诱发细胞的圆化。20:4 Lyso PI 促进RhoA的激活以及随后的ROCK依赖的细胞骨架重排,同时激活ERK信号通路并提升细胞内游离钙水平。此化合物可用于免疫疾病的研究。
Virodhamine trifluoroacetate is an antagonist of endogenous cannabinoid receptor mixed that acts by being a full agonist at GPR55 and CB2 and partial antagonist at CB1.
Potent and selective CB2 receptor agonist (Ki = 12.8 nM; EC50 = 38.67 nM). Exhibits negligible affinity for the CB1 receptor (Ki > 40,000 nM) and no activity at the GPR55. Suppresses neuroinflammation by reducing microglial activation in a multiple sclerosis mouse model. BBB permeable; anti-inflammatory and neuroprotective.
PSB-KD477 is an Agonist of the Cannabinoid-Activated Orphan G-Protein-Coupled Receptor GPR18. PSB-KD477 displayed significantly higher potency and efficacy than THC, determined in a GPR18-dependent β-arrestin recruitment assay, and were found to be selective versus the CB-sensitive receptors CB1, CB2, and GPR55. Structure-activity relationships were steep, and indole substitution was crucial for biological activity. These first selective agonists, which are structurally distinct from the lipidic agonist(s), will allow target validation studies and may eventually contribute to the deorphanization of GPR18.