Figure 2. Knock-down of UCA1 inhibited cell growth and increased apoptotic rate in glioma cells. (A and B) CKK-8 assay. The cell growth in (A) U87 and (B) SHG139 cells at 0, 24, 48 and 72 h after UCA1 siRNAs (siUCA1(a) and siUCA1(b)) or scrambled siRNA transfection. (C and D) Flow cytometry. The cell apoptotic rate in (C) U87 and (D) SHG139 cells after UCA1 siRNAs (siUCA1(a) and siUCA1(b)) or scrambled siRNA transfection. (E and F): Western blotting. The protein expression of Bcl-2, active caspase 3, and active caspase 9 in (E) U87 and (F) SHG139 cells after UCA1 siRNAs (siUCA1(a) and siUCA1(b)) or scrambled siRNA transfection. 1, scrambled siRNA; 2, siUCA1(a); 3, siUCA1(b). All the experiments were performed in triplicates. Significant differences compared to the control group were expressed as *P<0.05 and **P<0.01.