Lentiviral vector-mediad RNA interference targeted against survivin inhibits survivin expression and induces cell apoptosis of human pancreatic cancer in vitro / 中国普通外科杂志

ABSTRACT

Objective To investigate the possibility of survivin inhibition by lentiviral vector-mediated RNA interference and the influence on cell apoptosis in pancreatic cancer cell line.Methods The lentiviral vector of SiRNA targeted against survivin(LV-shRNA-survivin-1,LV-shRNA-survivin-2,LV-shRNA-survivin-3) was constructed and transfected into the packaging cells 293T,and then the supernatant with virus was collected to transfect SW1990 cells.Quantitative real-time fluorescent PCR and Western-blot were used to detect the expression of survivin.DAPI staining and detection of enzymatic activity of caspase 3/7 were employed to examine cell apoptosis.Results Three lentiviral vector-survivin-shRNA were constructed successfully.In the LV-shRNA-survivin-1 group,the survivin mRNA and protein expression inhibitory rate was 73.50% and 87.64% respectively;when compared to control group,the activity of caspase-3/7 increased significantly,which showed a 14.5-fold increase,and apoptosis increased 11.95%.Conclusions Lentiviral vector-mediad RNA interference targeted against survivin can effectively inhibit survivin expression and increase cell apoptosis significantly.