Quantification of apoptotic induction was measured by flow cytometry in RPE cells after treatment with DMSO as a control, 25 μM
P22077 (USP7i), 10 μM RO3306 (CDK1i), or 10 μM DT‐061 (PP2Aa), and their combinations for the indicated times. DNA content was followed with Hoechst, and the mitochondrial membrane potential was measured by TMRE. The percentage of apoptotic cells (TMRE negative) is indicated for each condition. This experiment was repeated three times (*
P < 0.05 and **
P < 0.01;
t‐test). Bars represent mean values ± SEM.