The influence of small interfering RNA on the expression of Survivin in human glioma cells

Objective This study was to investigate the feasibility ofknockdown of Survivin gene with small interfering RNA and to observe the apoptosis in gliomas which was influenced by siRNA.Methods Survivin specific siRNA oligonucleotides were designed and synthesized artificially.This siRNA were transfected into human glioma cells T98 and SF767 to inhibit the expression of Survivin RNA in vitro.The mRNA level of Survivin was detected by real- time quantitative polymerase chain reaction (PCR) and the apoptosis of cells was assayed by flow cytometry (FCM).Methods The expression of Survivin mRNA in siRNA- transfected samples decreased by 92.6% and 89.5% in T98,SF767 cells respectively in 24 hours after transfected with siRNA oligos.The expression amount was declined by 80.1% and 67.6% in 48 hours after RNAi.The apoptosis rate of T98 cells was 50.2% in 24 hours after interfere,and was 38.4% in 48 hours.The apoptosis rate of SF757 cells were 40.1% and 25.6% respectively.There was a significant difference between the RNAi cells and negative controls(P ＜0.01 ).ConclusionThe specific siRNA oligo which was aim to Survivin could knockdown the expression of Survivin mRNA,and induce apoptosis in human glioma cells.The experiment had made the foundation of the clinical RNA interfering technique. Key words: Glioma; Apoptosis; Survivin; Small interfering RNA