Table 1. IC50 inhibition values of several phenoxyauxins and fibrates on the sweet-sensing receptor.
IC50 values of the tested compounds were determined from the calcium mobilization assays with heterologously expressed human T1R2+T1R3 receptor activated by 2.5mM sucralose in the presence of increasing concentrations of inhibitors. IC50s are means ± SD from at least 3 independent experiments.
| compound | IC50 | µM(SD) |
|---|---|---|
| Lactisole | 70 | (13) |
| IPA | >1000 | |
| IAA | >1000 | |
| IBA | >1000 | |
| PAA | >500 | |
| NAA | 233 | (82) |
| 4-CPA | 142 | (19) |
| 2,4D | 50 | (10) |
| 2,4DP | 5.3 | (1.3) |
| 2,4,5TPP | 5.7 | (1.2) |
| MCPP | 12 | (3) |
| Clofibric acid | 28 | (8) |
| Gemfibrozil | 69 | (20) |
| Bezafibric acid | 100 | (11) |