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Peptide-based Identification of Functional Motifs and their Binding Partners

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Published on: June 30, 2013

ADAM17是一种HIV-1限制因子,与Nef相对抗

Yong-Hui Zheng¹, Qiuchen Li¹, Sunan Li²

¹University of Illinois Chicago.

Research square

|July 18, 2025

概括

艾滋病毒-1 Nef 蛋白质通过促进其出口来抵消宿主限制因子 ADAM17 (TACE). 这种机制增强了HIV-1的传染性,并有助于病毒的发病.

科学领域:

病毒学病毒学
免疫学免疫学免疫学
细胞生物学细胞生物学

背景情况:

尼夫是一种关键的HIV-1辅助蛋白,参与病毒病原和免疫逃避.
尼夫 (Nef) 增强病毒感染力的确切机制尚未完全理解.
主体因素可以限制HIV-1的复制和传染性.

研究的目的:

为了确定限制HIV-1感染性的宿主因素.
阐明Nef增强HIV-1病毒感染性的机制.
了解NEF,宿主限制因素和病毒病原体之间的相互作用.

主要方法:

亲和性净化与质谱相结合,以确定宿主病毒蛋白相互作用.
对HIV-1 Env表达和纳入病毒体的分析.
研究涉及内和外细胞的细胞内贩运途径.
使用实验室适应和循环的HIV-1菌株评估病毒感染力.

主要成果:

确定ADAM17 (A Disintegrin and Metalloproteinase域含蛋白 17) 是一种与ER中HIV-1 Env相关的宿主限制因子.
结合Env的ADAM17减少了Env的表达和被纳入病毒体,使感染能力降低了大约100倍.
这种限制是由ADAM17原域介导的,影响Env的贩运,独立于其金属蛋白酶活性.
尼夫通过通过Rab11阳性内和CD63阳性外介导出口来降低细胞ADAM17水平来抵消ADAM17的限制.
尼夫的作用将促炎性反应 (通过ADAM17/TNF信号) 与HIV-1逃避宿主限制联系起来.

结论:

ADAM17作为宿主限制因子,通过干扰Env处理和整合来抑制HIV-1感染力.
尼夫通过一种新型的外体路径对抗ADAM17介导的限制,增强病毒感染力.
这项研究揭示了HIV-1免疫逃避和发病的新机制,将病毒蛋白连接到宿主炎症途径.

关键词:

亚当17年亚当17年艾滋病毒-1 Envv 尼弗尼夫 (Nef Nef Nef) 是指一个有价值的资产.限制因素是一个限制因素.这是TACE的税率.

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