Fig. 3.

(A) Functional activities of SMM-295 in the CB2 ACTOne assay (open circles), CB1 ACTOne assay (open triangles), and parental ACTOne cells containing only the CNG ion channel (filled squares). The functional activation of CB2 by the internal control (CP 55,940; filled diamonds) is shown. (B) Western blot analysis of signaling proteins after brief exposure (15 minutes) to SMM-295 in rat NRK-52E proximal tubule epithelial cells. Activation of prosurvival Akt/PKB and MAPK (ERK1/2 and p38) was detected using specific antibodies. β-actin was used as a loading control. ERK1/2, extracellular signal–regulated kinase 1/2.