短发卡RNA抑制survivin表达并诱导CNE-2细胞凋亡

Journal of Xi'an Jiaotong University (Medical Sciences)(2012)

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Abstract
目的 观察以短发卡RNA(shRNA)抑制鼻咽癌细胞survivin表达对细胞凋亡与增殖的影响.方法 构建特异性survivin shRNA,转染CNE-2细胞.分组:A组为空白对照组;B组为阴性干扰组,转染pSIREN-survivin/nonsenseshRNA;C组为阳性干扰24 h组,转染pSIREN-survivin/shRNA;D组为阳性干扰48 h组,转染pSIREN-survivin/shRNA.以RT-PCR、Western-blot分别测定细胞survivin mRNA及蛋白,PI、TUNEL及MTT检测细胞周期、凋亡率、细胞增殖.结果 转染效率约(70.90±4.76)%;C组survivin mRNA和蛋白抑制率分别为(41.58±0.63)%、(68.29±0.52)%;D组抑制率分别为(63.64±0.96)%、(70.83±0.48)%.C组凋亡率为(36.24±0.78)%,D组为(50.37±0.85)%,显著高于B组和A组;S期细胞减少,G2/M期比例增高;MTT结果提示细胞增殖受到明显抑制.结论 特异性shRNA可有效干扰CNE-2内survivin的表达,诱导细胞凋亡并抑制其过度增殖.
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Key words
Gene therapy,Nasopharyngeal carcinoma,Plasmid,RNA interference,Short hairpin RNA,Survivin gene,Transfection
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