ADAR1 p150阻止HSV-1触发PKR/eIF2α介导的转化停止,并且对于有效的病毒复制是必需的
Adwait Parchure1, Mia Cesarec1, Antonija Braut1
1Faculty of Biotechnology and Drug Development, University of Rijeka, Rijeka, Croatia.
PLoS pathogens
|April 8, 2025
概括
作用于dsRNA 1 (ADAR1) 的腺氨酸脱氨酶对简单疹病毒1 (HSV-1) 复制至关重要. ADAR1防止PKR过度激活,这是一个关键的先天性免疫传感器,从而促进病毒传播.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 作用于dsRNA 1 (ADAR1) 的腺氨酸脱氨酶通过控制细胞质dsRNA传感器来调节先天免疫力.
- 在疹病毒复制中ADAR1的作用在很大程度上是未知的.
- ADAR1具有多种功能,促进和抑制病毒感染.
研究的目的:
- 为了研究ADAR1在简单疹病毒1 (HSV-1) 复制中的功能.
- 了解ADAR1如何影响HSV-1感染期间的先天免疫传感器激活.
主要方法:
- 在具有和没有ADAR的细胞中研究HSV-1复制1.
- 分析了PKR的激活,一个dsRNA传感器.
- 使用的病毒 (ICP34.5) 和药理 (ISRIB) 抑制剂.
主要成果:
- 在ADAR1缺乏细胞中,HSV-1过度激活PKR,导致转化停止和病毒复制减少.
- 抑制或抑制PKR可以挽救ADAR1缺乏细胞中的病毒复制.
- ADAR1 p150与PKR相互作用,防止其在感染期间过度激活.
结论:
- 在HSV-1感染中,ADAR1充当前病毒因子.
- ADAR1增加了先天免疫传感器的激活值.
- ADAR1与PKR的相互作用是促进病毒复制的关键.
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