RESUMEN
Objective:To investigate the effect of inhibiting of BAG-1 gene expression on proliferation and apoptosis of cutaneous squamous cell carcinoma.Methods:siRNA of BAG-1 was transfected in cutaneous squamous cell carcinoma A431 by Lipo-fectamineTM2000,cells were transfected for 48 h,the BAG-1 mRNA expression was detected by RT-PCR,BAG-1 protein expression was detected by Western blot;CCK8 and flow cytometry were used to detect the cell proliferation and apoptosis;Western blot was used to detect the expression of Bax,β-catenin and Survivin protein;IL-6 and VEGF content were detected by ELISA kit.Results:Compared with control group and negative control group,transfection of BAG-1 with siRNA could significantly inhibit the expression of BAG-1 at the transcriptional and translational levels;compared with the control group,the cells proliferation in BAG-1-siRNA group significantly decreased,apoptosis rate was significantly increased,Bax protein expression was up-regulated,expression of β-catenin,Survivin protein were down regulated,the contents of IL-6 and VEGF were decreased significantly(P<0.05).Conclusion:Silencing of BAG-1 expression can reduce the proliferation of cutaneous squamous cell carcinoma,promote apoptosis,up regulate Bax expression and down regulate the expression of Wnt/β-catenin signaling pathway,and reduce the secretion of IL-6 and VEGF factors.