首都医科大学学报 ›› 2011, Vol. 32 ›› Issue (2): 199-202.

• 艾滋病基础与流行病学研究 • 上一篇    下一篇

HIV Nef的结构特点及生物学作用

张宏伟,吴昊*   

  1. 首都医科大学附属北京佑安医院感染科
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-21 发布日期:2011-04-21
  • 通讯作者: 吴昊

Structural Characteristics and Biological Effects of HIV Negative Factor

ZHANG Hong-wei, WU Hao*   

  1. Department of Infectious Diseases, Beijing Youan Hospital, Capital Medical University
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-21 Published:2011-04-21
  • Contact: WU Hao

摘要: 负调控因子(negative factor,Nef)是人免疫缺陷病毒(human immunodeficiency virus,HIV)附属蛋白之一,相对分子质量小,柔韧性大,核心结构呈球形。Nef不具酶活性,具有衔接蛋白的作用,可下调CD4、主要组织相容性复合体Ⅰ(major histocompatibility complex Ⅰ,MHC Ⅰ)、主要组织相容性复合体Ⅱ(major histocompatibility complex Ⅱ,MHC Ⅱ)和CD28分子,在对抗宿主免疫应答过程中发挥重要作用。Nef可增强病毒的复制和感染性,抑制HIV感染细胞的凋亡,在HIV致病机制方面也发挥关键作用。

关键词: 人免疫缺陷病毒负调控因子蛋白, 衔接蛋白, CD4, 凋亡

Abstract: Negative factor(Nef) is one of the human immunodeficiency virus(HIV) accessory proteins with small molecular weight, large flexibility and spherical core. HIV Nef is an adaptor protein with no enzymatic activities. The protein has a central function in fighting against host immune response by downregulating CD4, MHC Ⅰ, MHC Ⅱ and CD28. The protein can enhance HIV replication and infectivity, and inhibit apoptosis of HIV-infected cells. The Nef protein plays a critical role in HIV pathogenesis.

Key words: human immunodeficiency virus negative factor, adaptor protein, CD4, apoptosis

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