Zinc finger nuclease: a new approach for excising HIV-1 proviral DNA from infected human T cells
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  • 作者:Xiying Qu ; Pengfei Wang ; Donglin Ding ; Xiaohui Wang…
  • 关键词:Human immunodeficiency virus 1 ; Zinc ; finger nucleases ; Long terminal repeat
  • 刊名:Molecular Biology Reports
  • 出版年:2014
  • 出版时间:September 2014
  • 年:2014
  • 卷:41
  • 期:9
  • 页码:5819-5827
  • 全文大小:1,970 KB
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  • 作者单位:Xiying Qu (1)
    Pengfei Wang (1)
    Donglin Ding (1)
    Xiaohui Wang (1)
    Gongmin Zhang (1)
    Xin Zhou (1)
    Lin Liu (1)
    Xiaoli Zhu (1)
    Hanxian Zeng (1)
    Huanzhang Zhu (1)

    1. State Key Laboratory of Genetic Engineering, School of Life Sciences, Institute of Genetics, Fudan University, Shanghai, 200433, China
  • ISSN:1573-4978
文摘
A major reason that Acquired Immune Deficiency Syndrome (AIDS) cannot be completely cured is the human immunodeficiency virus 1 (HIV-1) provirus integrated into the human genome. Though existing therapies can inhibit replication of HIV-1, they cannot eradicate it. A molecular therapy gains popularity due to its specifically targeting to HIV-1 infected cells and effectively removing the HIV-1, regardless of viral genes being active or dormant. Now, we propose a new method which can excellently delete the HIV provirus from the infected human T cell genome. First, we designed zinc-finger nucleases (ZFNs) that target a sequence within the long terminal repeat (LTR) U3 region that is highly conserved in whole clade. Then, we screened out one pair of ZFN and named it as ZFN-U3. We discovered that ZFN-U3 can exactly target and eliminate the full-length HIV-1 proviral DNA after the infected human cell lines treated with it, and the frequency of its excision was about 30?% without cytotoxicity. These results prove that ZFN-U3 can effciently excise integrated HIV-1 from the human genome in infected cells. This method to delete full length HIV-1 in human genome can therefore provide a novel approach to cure HIV-infected individuals in the future.

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