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干细胞相关基因在肝癌细胞系中的表达 被引量:6

Analysis on the expression of the stem cells related genes in hepatocellular carcinoma cell lines
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摘要 目的了解Oct4、Sox2、Nanog、SMO、β-Catenin、Wnt5b等干细胞相关基因在4株人肝癌细胞系SMMC7721、Bel-7402、HepG2、MHCC-97和正常人肝脏细胞系L02中的表达情况,并比较不同细胞系中各基因量的差异和对全反式维甲酸(tRA)的反应。方法逆转录聚合酶链反应测定4株人肝癌细胞系中Oct4、Sox2、Nanog、SMO、β—Catenin、Wnt5b mRNA的表达,实时荧光定量PCR比较不同细胞中各基因量的差异以及对tRA的反应。单因素方差分析比较各基因在不同细胞系中的表达差异。结果干细胞相关基因Oct4、Sox2、Nanog、SMO、β-Catenin和Wnt5b在4株人肝癌细胞系SMMC-7721、Bel-7402、HepG2、MHCC-97和正常人肝脏细胞系L02中有不同程度的表达(P〈0.05);人肝癌细胞系HepG2和正常人肝脏细胞系L02对tRA的反应也存在明显差异(P〈0.05)。结论干细胞相关基因在人肝癌细胞系中不同程度的表达,不同肝癌细胞系中这些基因表达有一定的差异,可能与其生物学特性不同有关;人肝癌细胞系HepG2中Oct4和Sox2的表达调控不同于胚胎干细胞。在肝癌细胞中可能存在着Oct4对于Wnt/β-catenin信号转导通路的调节作用。 Objective To investigate the expression of Oct4, Sox2, Nanog, SMO, β -Catenin and Wnt5b mRNA in four hepatocellular carcinoma cell lines of SMMC-7721, Bel-7402, HepG2, MHCC-97 and normal hepatocellular cell line of L02, and to compare the response of these cell lines to all-trans retinoic acid. Methods RT -PCR was used to detect expression of Oct4, Sox2, Nanog, SMO,β -Catenin and Wnt5b mRNA in four hepatocellular carcinoma cell lines and normal hepatocellular cell line. Real time-PCR was used to quantify the expression of the genes. Results There are different levels of expression of the stem cell- related gene in hepatocellular carcinoma cell lines and control cell line (P 〈 0.05). There are significant differences in HepG2 and L-02 for the response to all-trans retinoic acid (P 〈 0.05). Conclusions The stem cell-related genes are differentially expressed in different hepatocellular carcinoma cell lines.
出处 《中华肝脏病杂志》 CAS CSCD 北大核心 2009年第8期599-602,共4页 Chinese Journal of Hepatology
基金 湖北省教育厅重点项目(D200724003) 十堰市科技局科技攻关项目(十科发[2007]19号/24)
关键词 干细胞 基因 肝细胞 全反式维甲酸 甲基化 Stem cell Gene Carcinoma, hepatocellular All-trans retinoic acid Methylation
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共引文献22

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