摘要
目的研究沉默诱骗受体(DCR)3对卵巢癌细胞紫杉醇敏感性的影响。方法以靶向DCR3慢病毒干扰载体感染卵巢癌细胞ES-2,用Realtime PCR和Western印迹检测干扰效果。用不同浓度的紫杉醇处理ES-2细胞,细胞计数试剂盒(CCK-8)测定细胞存活情况,用紫杉醇处理沉默DCR3的ES-2细胞,CCK-8检测细胞增殖,细胞克隆实验检测细胞克隆能力,流式细胞术检测细胞凋亡,Western印迹检测细胞中活化的含半胱氨酸的天冬氨酸蛋白水解酶(C-Caspase)-12、C-Caspase-3、CCAAT/增强子结合蛋白同源蛋白(CHOP)水平。结果靶向DCR3慢病毒干扰载体下调ES-2细胞中DCR3 mRNA和蛋白水平。不同浓度的紫杉醇抑制ES-2细胞增殖,10~(-6) mol/L的紫杉醇处理后的卵巢癌细胞存活率为(53.26±4.15)%,选用10~(-6)mol/L的紫杉醇处理沉默DCR3的ES-2细胞。沉默DCR3后的ES-2细胞增殖能力显著降低,细胞克隆形成能力显著降低,细胞凋亡率显著升高,细胞中C-Caspase-12、C-Caspase-3、CHOP蛋白水平显著升高。紫杉醇处理沉默DCR3后的ES-2细胞增殖和克隆形成能力显著降低,细胞凋亡率显著升高,C-Caspase-12、C-Caspase-3、CHOP蛋白水平显著升高,与未沉默DCR3的ES-2细胞比较,差异有统计学意义(P<0.05)。结论沉默DCR3协同紫杉醇抑制卵巢癌细胞增殖,诱导卵巢癌细胞凋亡,增加卵巢癌细胞紫杉醇敏感性。
引文
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