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Study on hTERT expression of hepatocarcinoma cells inhibited by RNA interference in vitro

黄文方, 张鹏辉, Liu Jian Hua, 涂植光, 杨明清

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Abstract

目的 利用小片段干扰RNA(siRNA)在肝癌细胞内诱导RNA干扰(RNAi),抑制端粒逆转录酶(hTERT)基因表达,在体外进行RNAi对肝癌治疗的试验研究.方法构建针对hTERT基因的siRNA(siRNA-hTERT),转导入肝癌细胞7721,在瘤细胞内诱导RNAi,采用流式细胞分析、逆转录聚合酶链反应(RT-PCR)法、免疫组化等技术检测siRNA处理前后细胞增殖及hTERT基因表达变化.结果 siRNA-hTERT对肝癌细胞生长抑制率达37.5%;细胞周期中S期细胞明显减少,G1/G0期细胞显著增加;hTERT基因的mRNA表达由99.4%下调到53.1%,其蛋白表达由86.3%下调到46.6%.结论 RNAi在体外明显抑制了肝癌细胞中hTERT基因的表达和瘤细胞增殖。

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目的 利用小片段干扰RNA(siRNA)在肝癌细胞内诱导RNA干扰(RNAi),抑制端粒逆转录酶(hTERT)基因表达,在体外进行RNAi对肝癌治疗的试验研究.方法构建针对hTERT基因的siRNA(siRNA-hTERT),转导入肝癌细胞7721,在瘤细胞内诱导RNAi,采用流式细胞分析、逆转录聚合酶链反应(RT-PCR)法、免疫组化等技术检测siRNA处理前后细胞增殖及hTERT基因表达变化.结果 siRNA-hTERT对肝癌细胞生长抑制率达37.5%;细胞周期中S期细胞明显减少,G1/G0期细胞显著增加;hTERT基因的mRNA表达由99.4%下调到53.1%,其蛋白表达由86.3%下调到46.6%.结论 RNAi在体外明显抑制了肝癌细胞中hTERT基因的表达和瘤细胞增殖。

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Available abstract

目的 利用小片段干扰RNA(siRNA)在肝癌细胞内诱导RNA干扰(RNAi),抑制端粒逆转录酶(hTERT)基因表达,在体外进行RNAi对肝癌治疗的试验研究.方法构建针对hTERT基因的siRNA(siRNA-hTERT),转导入肝癌细胞7721,在瘤细胞内诱导RNAi,采用流式细胞分析、逆转录聚合酶链反应(RT-PCR)法、免疫组化等技术检测siRNA处理前后细胞增殖及hTERT基因表达变化.结果 siRNA-hTERT对肝癌细胞生长抑制率达37.5%;细胞周期中S期细胞明显减少,G1/G0期细胞显著增加;hTERT基因的mRNA表达由99.4%下调到53.1%,其蛋白表达由86.3%下调到46.6%.结论 RNAi在体外明显抑制了肝癌细胞中hTERT基因的表达和瘤细胞增殖。

Key concepts: In vitro, RNA interference, Interference (communication), RNA, Molecular biology, Telomerase reverse transcriptase, Chemistry, Cell biology

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