Down-regulation of Bcl-XL by RNA interference suppresses cell growth and induces apoptosis in human esophageal cancer cells

Figure 1 RT-PCR analysis of the effect of siRNA-expressing vector on Bcl-X_L gene expression. A: Argarose gel electrophoresis of the RT-PCR products. L1: DNA marker; L2: RT-PCR product of the untreated cells; L3: RT-PCR product of the empty pTZ-U6+1 vector treated cells; L4: RT-PCR product of the control siRNA-expressing vector treated cells; L5: RT-PCR product of the siRNA-expressing vector No.1 treated cells; L6: RT-PCR product of the siRNA-expressing vector No.2 treated cells; L7: RT-PCR product of the siRNA-expressing vector No.3 treated cells. B: Quantification of the RT-PCR products (mean ± SD, n = 3, ^aP < 0.05 vs untreated esophageal cancer cells).