[Phosphatidylinositide 3-kinase inhibitor BKM120 suppresses proliferation and promotes apoptosis of U251 glioblastoma cells]

Objective To investigate the effect of phosphatidylinositide 3-kinase (PI3K) inhibitor BKM120 on the proliferation and apoptosis of human glioma U251 cells. Methods U251 cells were treated with different concentrations of BKM120 (final concentrations were 1, 5, 20 μmol/L) for 48 hours. The effect of BKM120 on cell proliferation was detected by CCK-8 assay. The apoptosis was detected by annexin V-FITC/PI staining. The protein expressions of Bax and Bcl-2 were detected by Western blotting. Results CCK-8 assay showed that BKM120 inhibited U251 proliferation in a concentration-dependent manner and the maximum inhibitory rate was 78.3%. Flow cytometry showed that BKM120 induced cell aopotosis in a concentration-dependent manner. Western blotting revealed that the expression of Bax was elevated by BKM120, but the expression of Bcl-2 had a reverse trend. Conclusion BKM120 can inhibit the proliferation and induce the apoptosis of U251 cells.