艾滋病毒-1囊核是一个机会主义的核导入受体
Guangai Xue1, Hyun Jae Yu2, Cindy Buffone3
1Model Development Section, Cancer Innovation Laboratory, National Cancer Institute, Frederick, MD, 21702, USA.
Nature communications
|June 24, 2023
概括
人类免疫缺陷病毒1型 (HIV-1) 的核入口依赖于其囊体 (CA) 与特定的核毛孔复合蛋白 (Nups) 相互作用. 这些相互作用是由宿主因子 (如环素A) 调节的,揭示了HIV-1的存在.
科学领域:
- 病毒学 病毒学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 核孔复合体 (NPC) 调节核与细胞质之间的运输.
- 包括病毒在内的大型宏分子载荷穿越NPC的机制尚未完全理解.
- 人类免疫缺陷病毒1型 (HIV-1) 囊 (CA) 对于病毒核传输至关重要.
研究的目的:
- 阐明涉及HIV-1核进口的特定核素 (Nups) 和宿主因素.
- 调查HIV-1囊 (CA) 与NPC相互作用的作用.
- 了解可溶性宿主因子如何调节HIV-1核进入.
主要方法:
- 研究了HIV-1囊和核波林之间的相互作用 (Nup35,Nup153,POM121).
- 评估了环菲林A (CypA) 在HIV-1囊-Nup相互作用中的作用.
- 分析了囊突变和宿主因子枯竭对NPC相互作用的影响.
主要成果:
- 确定了Nup35,Nup153和POM121作为支持HIV-1进入核中的关键参与者.
- 证明Nup35和POM121与HIV-1CA的相互作用取决于环素A.
- 表明Nup35和POM121通过氨酸-甘氨酸 (FG) 基因直接与HIV-1CA相互作用.
- 在CA的突变或可溶性宿主因子的去除后观察到改变的NPC相互作用.
结论:
- 艾滋病毒-1囊体作为核转运受体 (NTR) 起作用.
- 艾滋病毒-1利用可溶性宿主因子调节NPC对核入侵的要求.
- 特定的核波林 (Nup35,POM121) 和宿主因子 (CypA) 对HIV-1核导入至关重要.
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