CID16020046

In yeast cells expressing human GPR55, CID16020046 antagonized agonist-induced receptor activation. In human embryonic kidney (HEK293) cells stably expressing human GPR55, the compound behaved as an antagonist on LPI-mediated Ca2+ release and extracellular signal-regulated kinases activation, but not in HEK293 cells expressing cannabinoid receptor 1 or 2 (CB1 or CB2). CID16020046 concentration dependently inhibited lysophosphatidylinositol (LPI)-induced activation of nuclear factor of activated T-cells (NFAT), nuclear factor κ of activated B cells (NF-κB) and serum response element, translocation of NFAT and NF-κB, and GPR55 internalization^[2].

2 × 10⁶ cells were transferred into 500 μL PBS and preincubated for 30 mins with 1, 5, and 10 μM CID16020046 or vehicle (DMSO). Cells were then stimulated with 1 nM of monocyte chemotactic protein 1 (MCP-1) for another 30 mins at 37°C. Alexa Fluor 647 anti-mouse CD11b was added 15 min before the end of the incubation time. After adding the fixative solution, cells were measured on a FACSCalibur flow cytometer. Experiments were performed in triplicates and data were expressed as percentage change to the vehicle treatment.

CID16020046 improves inflammation in models of intestinal inflammation and reduces proinflammatory cytokines. CID16020046 does not change the locomotor and anxiety behavior of healthy mice^[1].