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人端粒酶逆转录酶慢病毒载体的构建及人肝细胞的初步筛选 被引量:6

Construction of lentiviral expression vector carrying telomerase reverse transcriptase gene and preliminary screening for human hepatocytes
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摘要 目的:构建人端粒酶逆转录酶(hTERT)慢病毒表达载体,将其转染人肝细胞L02并且通过杀稻瘟筛选出阳性克隆细胞。方法:以PBABE-puro-hTERT质粒为模板PCR法获取目的基因attB1-hTERT-attB2,通过BP反应克隆至pDONR221;采用LR重组酶将pDONR221-hTERT和pLenti6/V5-DEST进行重组反应,形成pLenti6/V5-DEST-hTERT。将重组载体pLenti6/V5-DEST-hTERT与包装质粒充分混合,利用脂质体共转染293FT细胞,获得重组慢病毒颗粒。将其感染人肝细胞L02,通过杀稻瘟筛选获得阳性克隆。结果:测序发现入门载体pDONR221包含的目的基因hTERT 1547位点存在点突变(原碱基A变成G),通过定点突变技术成功诱变并鉴定慢病毒表达载体pLenti6/V5-DEST-hTERT成功构建。重组慢病毒滴度为1×108TU/L,获得20株稳定抗性的单克隆细胞。结论:成功构建人端粒酶逆转录酶的慢病毒表达载体,获得稳定抗性的单克隆肝细胞,为进一步建立永生化肝细胞系奠定了基础。
出处 《中国病理生理杂志》 CAS CSCD 北大核心 2009年第4期826-829,共4页 Chinese Journal of Pathophysiology
基金 广东省科学技术厅-广东省粤港地区重大领域资助项目(No.2005A11304005)
关键词 端粒酶逆转录酶 慢病毒载体 肝细胞 Telomerase reverse transcriptase Lentiviral vector Hepatocytes
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参考文献13

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