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[目的]探讨XIAP基因沉默对卵巢癌SKOV3细胞生物学特性的影响.[方法]人卵巢癌细胞株 SKOV3分别转染XIAP/siRNA、XIAP/smRNA,以PBS作为对照组.检测细胞转染效率,采用流式细胞仪检测细胞凋亡率,采用Transwell上室检测细胞转移与侵袭数目,采用Western blot检测相关蛋白表达水平.[结果]与对照组相比,XIAP/siRNA组的细胞中XIAP蛋白水平显著下降,XIAP/smRNA组无显著变化. XIAP/siRNA组细胞凋亡水平显著高于XIAP/smRNA组与对照组(P <0.05),穿模细胞数和转移细胞数显著低于对照组和XIAP/smRNA组,其差异有显著性(P 0.05);XIAP/siRNA组的E-cad蛋白相对表达水平为0.312±0.08,显著低于对照组、XIAP/smRNA 组的 1.065±0.01、1.026±0.2,其差异有统计学意义(P 0.05).[结论]XIAP基因沉默能有效抑制卵巢癌SKOV3细胞的凋亡,抑制细胞转移与侵袭,其作用机制可能与调节E-cad表达有关.“,”[Objective]To investigate the effect of XIAP gene silencing on the biological characteristics of ovarian cancer SKOV3 cells.[Methods]The human ovarian cancer cell line SKOV3 were transfected with XIAP/siRNA and XIAP/smRNA respectively,and the PBS were used as the control group. The cell transfection efficiency was detected. The apoptosis rate was detected by flow cytometry. The number of cell migration and invasion were detected by Transwell chamber,and the expression of related protein levels were detected by Western blot. [Results]Compared with the control group,the level of XIAP protein in XIAP/siRNA group decreased significantly, but no significant change was found in XIAP/smRNA group. The level of apoptosis in XIAP/siRNA group was significantly higher than that in the XIAP/smRNA group and the control group (P <0.05), The number of model penetrating cells and metastatic cells in the XIAP/ siRNA group was significantly lower than that in the control group and the XIAP/ smRNA group (P 0.05). The relative expression level of E-cad protein in the XIAP/siRNA group was 0.312 ±0.08, which was significantly lower than that in the control group and the XIAP/smRNA group (1.065 ± 0.01,1.026 ± 0.2),and the difference was statistically significant (P 0.05).[Conclusion]XIAP gene silencing can effectively inhibit apoptosis ,metastasis and invasion of ovarian cancer SKOV3 cells,and its mechanism may be related to the regulation of E-cad expression.