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逆转录病毒介导ARLTS1基因表达抑制肝癌细胞HepG2的增殖

CHINA JOURNAL OF MODERN MEDICINE(2010)

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Abstract
目的 构建高表达ARLTS1基因的逆转录病毒栽体(PLEGFP-IRES-ARLTS1),探讨外源性ARLTS1基因对人肝癌细胞HepG2增殖的影响.方法 RT-PCR扩增ARLTS1 cDNA,克隆至重组逆转录病毒载体PLEGFP-IRES.重组质粒转染病毒包装细胞PT67,产生病毒后感染HepG2细胞,荧光显微镜检测绿色荧光蛋白表达,Western Blot检测细胞内ARLTS1蛋白表达,并对感染后细胞的增殖状况进行分析.结果 酶切及基因测序证实重组质粒PLEGFP-IRES-ARLTS1构建成功;荧光显微镜观察到70%左右靶细胞内有绿色荧光蛋白表达;Westem Blot证实,ARLTS1蛋白在HepG2-ARLTS1内表达显著升高;MTT实验显示,HepG-2-ARLTS1细胞组体外增殖率较各对照组明显降低(P<0.05).结论 获得了稳定表达外源性ARLTS1蛋白的HepG2细胞株,外源性ARLTS1抑制HepG2细胞增殖,为后续研究ARLTS1抗肿瘤机制奠定了基础.
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Key words
arlts1 gene expression,hepg2,gene expression,retrovirus-mediated
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