病毒诱导的囊泡酸性增强艾滋病毒免疫逃避
Marianne E Yaple-Maresh1, Giselle G Flores2, Gretchen E Zimmerman1
1Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, United States.
bioRxiv : the preprint server for biology
|January 7, 2025
概括
艾滋病毒-1感染通过降低/交换器6 (NHE6) 水平来酸化内体,影响病毒的进入和MHC-I下调. 恢复NHE6水平或抑制真空ATPase (V-ATPase) 可以逆转这些影响.
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:
- 细胞利用由真空ATPase (V-ATPase) 和核受体7 (NCOA7) 介导的内体酸化来限制病毒的进入.
- 人类免疫缺陷病毒1型 (HIV-1) 感染会影响细胞过程,包括内体的pH值,这可能会影响病毒复制和宿主细胞相互作用.
研究的目的:
- 调查内体酸性化及其调节器NCOA7和/交换器6 (NHE6) 在HIV-1感染中的作用.
- 确定调节内体pH对HIV-1 Nef介导的MHC-I下调的影响.
主要方法:
- 在HIV-1感染的T细胞中分析NCOA7和NHE6的表达.
- 使用过度表达和康卡纳米辛A.A.来操纵NHE6水平和V-ATPase活性.
- 评估内体pH值的变化及其对HIV-1记者病毒对MHC-I下调的影响.
主要成果:
- 艾滋病毒-1感染导致内体酸性化,NCOA7的边际变化但50kDaNHE6水平显著降低.
- 过度表达NHE6或抑制V-ATPase可以逆转内体酸性化和减少Nef-依赖的MHC-I下调.
- 通过干扰Nef-Rab11,Nef-β-COP和Nef-ARF-1相互作用,NHE6过度表达破坏了Nef介导的MHC-I下调.
- HIV-1 Vif蛋白对于NHE6下调和内体酸性化是必不可少的,但对于Nef依赖的MHC-I下调并非如此.
结论:
- 艾滋病毒-1感染通过降低NHE6水平来积极操纵内体pH值,这一过程受到Vif的影响.
- 通过NHE6或V-ATPase调节内体的pH值,为抵消MHC-I下调等病毒机制提供了一个潜在的策略.
- NHE6在调节内体pH和HIV-1病变发生过程中必不可少的病毒蛋白相互作用方面发挥着至关重要的作用.
关键词:
AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1 AP-1在ARF-1中.艾滋病病毒 艾滋病病毒 艾滋病病毒在MHC中,MHC是最重要的.没有NCOA7A7这就是NHE NHE NHE.尼弗尼夫 (Nef Nef Nef) 是指一个有价值的资产.增值税的阶段酸性化是一种酸性化过程.抗原呈现的呈现方式.贝塔COP COP 贝塔COP COP 是一个比特币.免疫系统是免疫系统的.这是天生的,天生的.病毒 病毒 病毒 病毒更多相关视频
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