| Assay Method Information | |
| | Inhibition Enzyme Assay |
| Description: | CYP (Cytochrome P450) enzymes are the major drug metabolizing enzymes present in the liver. The inhibition of CYP enzyme activity (IC50) for each of CYP1A2, CYP2C19, CYP2C9, CYP2D6, CYP3A4(BFC) and CYP3A4(BQ) is determined for compounds, where inhibition of metabolism of a known substrate leads to a decrease in the fluorescence of the metabolized product. The fluorescence of the product is monitored as a function of compound concentration.Compounds are dissolved in DMSO to a concentration of 100 mM. These are diluted 1 uL into 82 uL of acetonitrile. An 11 uL aliquot of this solution is then added to 204 uL of cofactor mix (1.3% NADPH Regeneration system Solution A, 1.04% NADPH Regeneration system Solution B from BD Biosciences, 5% acetonitrile and 0.05% DMSO). These are then serially diluted 1:1 (160 uL to 160 uL co-factor mix) for a total of 10 points. A 10 uL aliquot of this final mixture is dispensed into 384 well assay plates. |
| Affinity data for this assay | |
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