Assay Report Card

ID: ALA3887173

Type: Binding

Description: Functional Assay: A functional assay screen for the inhibition of adenylate cyclase (AC) activity was chosen as the subsequent assay. This screen would allow us to gain a better understanding of the intrinsic activity of the analogues that displayed moderate to high sub-micromolar affinity for the CBRs. Reaching full-receptor occupancy, which is predicted to produce maximal efficacy, is desirable at 10 μM concentration of all the compounds was used. The non-selective CB1R/CB2R full agonist CP-55,940 was used as a positive control and it produced 45% AC-inhibition at CB1Rs endogenously expressed in Neuro2A cells (FIG. 19A) and 37% AC-inhibition in CHO cell transfected with hCB2 receptors (FIG. 19B). Most compounds tested exhibit AC-inhibition similar to that produced by the full agonist CP-55,940. TV-5-129, TV-6-249, and TV-6-41, however, produce lower AC-inhibition at CB1Rs than the full agonist CP-55,940 with −4, 18, and 16% inhibition, respectively (FIG. 19A). Despite little or no AC-inhibition observed at CB1Rs, these compounds behaved differently at CB2Rs. Specifically, the three compounds in question exhibited AC-inhibition that was in the range of the inhibition seen with CP-55,940 and were shown to inhibit adenylate cyclase with 22.1, 33.2, and 20.8%, respectively (FIG. 19B).

Cell type: CHO