RNAi技术对人肺腺癌细胞A549内源Survivin基因表达的影响

Shandong Medical Journal(2009)

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Abstract
目的为Survivin介导的肿瘤基因沉寂疗法的临床应用提供依据。方法应用RNA干扰技术(RNAi)将靶向Survivin的基因片段插入载体后构建重组质粒,将其导入A549细胞,MIT法检测转染前后A549细胞增殖情况,RT-PCR及Western blot法分析转染前后Survivin mRNA和蛋白表达情况。结果成功构建重组质粒pGene-sil1.1-Survivin。转染重组质粒后Survivin mRNA和蛋白的表达明显降低,抑制率分别为65%和71%,细胞增殖受抑。结论RNAi技术构建的重组质粒可明显抑制A549细胞内源Survivin的表达和mRNA转录,其在肿瘤基因沉寂疗法中可能起重要作用。
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Key words
human lung adenocarcinoma cells,Survivin gene,RNA intrference
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