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| | Homogeneous Time-Resolved Fluorescence (HTRF) Assay |
| Description: | The compound (R)-2-(7-(4-cyclopentyl-3-(trifluoromethyl)benzyloxy)-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl)acetic acid was shown to be an agonist of the S1P1 receptor (e.g., human S1P1 receptor) using the HTRF assay for direct cAMP measurement (Gabriel et al., Assay and Drug Development Technologies, 1:291-303, 2003) and recombinant CHO-K1 cells stably transfected with S1P1. CHO-K1 cells were obtained from ATCC (Manassas, Va.; Catalog #CCL-61). The compound was determined to be an agonist of the S1P1 receptor and was detected in the HTRF assay for direct cAMP measurement as a compound which decreased cAMP concentration. The HTRF assay has been used to determine EC50 values for S1P1 receptor agonists.Principle of the assay: HTRF assay kit was purchased from Cisbio-US, Inc. (Bedford, Mass.; Catalog #62AM4PEC). The HTRF assay supported by the kit is a competitive immunoassay between endogenous cAMP produced by the CHO-K1 cells and tracer cAMP labeled with the dye d2. |
| Affinity data for this assay | |
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