Figure 4.
Influence of PTEN depletion on DNA DSB induction and repair. (A) PTEN+/+ HCT116 (Neo 124) and PTEN−/− (#22 and #35) cells were plated 24 h in advance, after which they were subjected to γ-radiation (5 Gy). The level of DSBs was monitored by quantification of the average integrated fluorescence intensity per nucleus due to phosphorylation of histone H2AX as a function of time after 5-Gy irradiation. (B) Accumulation of DSBs by exposure of the HCT116 cells to 5 μM A12B4C3. Error bars represent ± SEM.