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Upregulating effect of hepatitis C virus core protein on NIP3 gene
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 7
- DOI:
- 10.3969/j.issn.1009-3079.2003.07.016
- Key Word:
- No keyword available
Abstract： 目的:了解丙型肝炎病毒核心蛋白和NIP3基因的表达的关系,研究HCV核心蛋白在HCV致病的分子生物学机制中的作用.方法:聚合酶链反应(PCR)扩增NIP3基因启动子,以T-A克隆法,将NIPP基因片段连入载体pGEM-T.获得的质粒pT-NIPP,和报告质粒pCAT3-basic分别用SacI和Bg1Ⅱ双酶切后构建报告载体pCAT3-NIPP,分别以重组报告载体pCAT3-NIPP和pcDNA3.1(-)-core应用FuGENE 6转染试剂瞬时转染NIH3T3细胞,以转染pCAT3 basic的HepG2细胞为阴性对照,48 h后收获细胞.应用酶联免疫黏附方法(ELISA)检测细胞中氯霉素乙酰转移酶(CAT)的表达活性,以了解HCV核心蛋白对NIP3基因启动子的反式激活作用.结果:构建的表达载体pcDNA3.1(-)-core和报告载体pCAT3-NIPP经过序列分析和酶切鉴定正确.pCAT3-NIPP和pcDNA3.1(-)-core瞬时转染的NIH3T3细胞中的CAT表达活性为pCAT3-NIPP的1.9倍,是pCAT3 basic的3.6倍,明显升高.结论:丙型肝炎病毒核心蛋白可反式激活NIP3基因启动子,进而上调NIP3基因的表达.
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