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中国临床药理学与治疗学 ›› 2015, Vol. 20 ›› Issue (2): 128-131.

• 基础研究 • 上一篇    下一篇

不同基因型丙型肝炎病毒非结构蛋白NS3对端粒酶活性的研究

李小宁1, 杨正海1, 李静2   

  1. 1皖南医学院弋矶山医院检验科,芜湖 241001,安徽;
    2铜陵职业技术学院医学检验技术系,铜陵 244000,安徽
  • 收稿日期:2014-10-20 修回日期:2015-01-30 出版日期:2015-02-26 发布日期:2015-03-20
  • 作者简介:李小宁,男,硕士,主任技师,研究方向:细菌耐药机制。Tel: 13705531365 E-mail: lixiaoning19702006@126.com
  • 基金资助:
    安徽高校省级自然科学研究项目(KJ2013B14)

Study of different genotypes hepatitis C virus non-structural 3 protein on telomerase activity

LI Xiao-ning1, YANG Zheng-hai1, LI Jing2   

  1. 1Department of Laboratory Medicine, Yijishan Hospital, Wannan Medical College,Wuhu 241001,Anhui,China;
    2Tongling Vocational Technical College,Tongling 244000,Anhui,China
  • Received:2014-10-20 Revised:2015-01-30 Online:2015-02-26 Published:2015-03-20

摘要: 目的: 建立丙型肝炎病毒(HCV) NS3蛋白细胞表达模型,研究不同基因型丙型肝炎病毒端粒酶活性之间是否存在差异。方法: 筛选出不同HCV 基因型。分别运用PCR法扩增HCV NS3蛋白基因,转载真核表达载体pBK-CMV,构建重组质粒pBK-HCV NS3,分别导入肝癌细胞株HepG2,采用端粒重复序列扩增(TRAP)方法检测不同基因型HCV NS3蛋白基因转载质粒导入HepG2细胞的端粒酶活性。结果: 本地区HCV基因型流行的主要是1b型,其次是2a型。转染不同基因型HCV NS3蛋白基因的HepG2细胞端粒酶活性较转染空载质粒的细胞明显升高;不同基因型HCV端粒酶活性之间存在差异,HCV 1b型的端粒酶活性明显高于HCV 2a型。结论: HCV NS3蛋白可能以某种机制激活了端粒酶活性。不同基因型HCV NS3蛋白在细胞恶性转化中的影响有差异。

关键词: HCV NS3蛋白, 基因型, 端粒酶

Abstract: AIM: To establish an expression model of HCV NS3 protein and explore the differences of telomerase activities among different hepatitis C virus genotypes.METHODS: Screening of different HCV genotypes through PCR array. HCV NS3 gene fragments (HCV 1b NS3 and HCV 2a NS3) were amplified and cloned into eukaryotic protein expression vector pBK-CMV. Followed by the introduction of recombinant plasmids (pBK-HCV1b NS3 and pBK-HCV2a NS3) and control vector into hepatoma cell lines HepG2, respectively. Telomerase activities of HepG2 cells were detected by telomeric repeat amplification protocol (TRAP) assay.RESULTS: The popular genotype of HCV in our region was HCV 1b, second was HCV 2a. Telomerase activities in HepG2 cells transfected with pBK-HCV NS3 significantly increased, compared with control. Furthermore, telomerase activities of HepG2 cells transfected with recombinant pBK-HCV1b NS3 were higher as compare with the cells transfected with pBK-HCV2a NS3 distinctly.CONCLUSION: HCV NS3 protein may activate telomerase through the same pathway. Different genotypes of HCV NS3 protein have different effects on the malignant transformation of HepG2 cells.

Key words: HCV NS3 protein, genotype, telomerase

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