| Assay Method Information | |
| | Biochemical Assay |
| Description: | Using the method described in Example 2, compounds of the invention were tested for inhibitory activity and potency against PI3Kdelta, and for selectivity for PI3Kdelta versus other Class I PI3K isozymes. In Table 1, IC50 values (uM) are given for PI3Kdelta (Delta), and may be calculated for the other isoforms using the ratios of IC50 values discussed below. To illustrate selectivity of the compounds, the ratios of the IC50 values of the compounds for PI3Kalpha, PI3Kbeta, and PI3Kgamma relative to PI3Kdelta are given, respectively, as Alpha/Delta Ratio, Beta/Delta Ratio, and Gamma/Delta Ratio.The initial selectivity assays were performed identically to the selectivity assay protocol in Example 2, except, using 100 uL Ecosint for radiolabel detection. Subsequent selectivity assays were done similarly using the same 3 substrate stocks except they contained 0.05 mCi/mL gamma [32P] ATP and 3 mM PIP2. Subsequent selectivity assays also used the same 3 enzyme stocks. |
| Affinity data for this assay | |
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