人膜连蛋白A2基因重组慢病毒载体的构建及其在肝癌细胞株中的表达
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国家自然科学基金青年基金(30901750);南京医科大学科技发展基金重点项目(NMUZ009);教育部“新世纪优秀人才支持计划”(NCET-09-0160);江苏省卫生厅“科教兴卫工程”医学重点学科(RC2007057)


Construction of the recombinant lentiviral vector containing human ANXA2 gene and its expression in hepatocellular carcinoma cells
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    目的: 构建重组慢病毒载体pWPT-ANXA2-Flag,并检测其在小鼠肝癌细胞系Hepa 1-6的表达情况-方法:利用DNA重组技术将人膜连蛋白A2(annexin A2,ANXA2)基因克隆入慢病毒表达载体pWPT中,通过酶切-测序验证后,将重组慢病毒载体pWPT-ANXA2-Flag与包装质粒pCMV-dR8.91-pCMV-VSV-G共转染人胚肾上皮细胞株293T,包装重组慢病毒LV-ANXA2-Flag,并感染小鼠肝癌细胞株Hepa 1-6,用RT-PCR检测ANXA2 mRNA转录水平, Western blot法检测ANXA2- Flag蛋白的表达情况,应用流式细胞仪检测细胞周期的变化-结果:经酶切及测序结果证实,构建了重组慢病毒载体pWPT-ANXA2-Flag;RT-PCR及Western blot结果显示慢病毒感染Hepa 1-6细胞后,ANXA2基因能够在细胞内正确的转录-翻译并稳定表达ANXA2蛋白;经过LV-ANXA2-Flag感染后,Hepa 1-6 细胞S期细胞比例明显高于对照细胞-结论:成功建立ANXA2基因慢病毒表达载体pWPT-ANXA2-Flag,包装的慢病毒能够成功感染小鼠肝癌细胞系Hepa 1-6,并使ANXA2基因得以稳定表达,并通过ANXA2促进肿瘤细胞增殖-

    Abstract:

    Objective: To construct the recombinant lentiviral vector containing human annexin A2 (ANXA2) gene and measure the expression level of ANXA2 in hepatocellular cell line of Hepa 1-6. Methods:The ANXA2 fragment was amplified by PCR and subcloned into the lentiviral vector pWPT. The resultant lentivirus were confirmed by PCR, restriction enzyme digestion and DNA sequencing. Recombinant lentivirus (LV-ANXA2-Flag) were produced from 293T by transient calcium-phosphate co-transfection with pWPT-ANXA2-Flag, CMVR8.91and pCMV-VSV-G. Hepa 1-6 cells were infected by LV-ANXA2-Flag lentivirus, and the expression of ANXA2 was confirmed by RT-PCR and Western blotting. Cell cycles were measured via flow cytometry. Results:The recombinant lentiviral vector carried the ANXA2 gene was successfully constructed. RT-PCR and Western blot analysis revealed that the ANXA2 gene can be correct transcripted and translated in Hepa 1-6 cell which infected by LV-ANXA2-Flag. After infected,the Hepa 1-6 cells were higer than control cells in percentage of S phase cells. Conclusion: The recombinant lentiviral vector pWPT-ANXA2-Flag was constructed successfully, it could be used to transfect hepatocellular carcinoma cells. ANXA2 could be stablely expressed and promote the proliferation of Hepa 1-6 cell.

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杨东昌,母小新,刘巧玉,邓 蕾,陈 云,孙倍成.人膜连蛋白A2基因重组慢病毒载体的构建及其在肝癌细胞株中的表达[J].南京医科大学学报(自然科学版),2011,(2):161-165

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  • 收稿日期:2010-07-05
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