Figure 4.
Apoptosis of cancer cell lines transfected with survivin siRNA was detected by Annexin V/PI double staining. Following siRNA knockdown of survivin in cancer cell lines (MDA-MB-231, SGC-7901, HeLa, A549, SK-OV-3, Raji and PC-3), levels of cell apoptosis were evaluated by Annexin V/PI double staining followed by flow cytofluorometry analysis. Early and late stage apoptosis (Annexin V+/PI− and Annexin V+/PI+, respectively) in the survivin siRNA groups were increased to some extent relative to the si-NC and normal control groups. siRNA, small interfering RNA; NC, scrambled negative control siRNA; normal, untreated negative control.
