Figure 4.

PI3K-Akt inhibitor LY294002 does not restore p53 protein levels. (A) Western blot analysis of the effects of PI3K inhibitor LY294002 on the endogenous p53 protein levels in U2OS cells. The cells were treated overnight, with 25 μM LY294002 or vehicle alone (DMSO). Treatment by LY294002 did not rescue the reduction of p53 protein levels by LMP1. (B) Western blot analysis of the effects of PI3K inhibitor LY294002 on the transfected p53 protein levels in CNE1-LMP1 stable cell line. The cells were treated overnight with 25 μM LY294002 or vehicle alone (DMSO). β-actin was served as a loading control in both the experiments. Representative blots were quantitated using Image J. Treatment with LY294002 did not rescue the reduction of p53 protein levels by LMP1.