在感染期间识别细胞RNA结合蛋白揭示了MKRN2在流感mRNA贩运中的作用
Stefano Bonazza1, Hannah Leigh Coutts1, Swathi Sukumar1
1Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom.
PLoS pathogens
|May 16, 2024
概括
研究人员发现,RNA结合蛋白MKRN2对于流感A病毒 (IAV) 复制至关重要. MKRN2促进病毒传递 RNA (mRNA) 从细胞核输出到细胞质,有助于病毒的生存.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 转录后条例 转录后条例 转录后条例
背景情况:
- RNA结合蛋白 (RBPs) 是病毒RNA转录后过程的关键调节者.
- 流感A型病毒 (IAV) 使用宿主RBPs并编码自己的 (例如,NP,NS1) 进行复制.
- 许多近1000个人类RBP在病毒复制中的作用在很大程度上是未知的.
研究的目的:
- 为了识别与IAV mRNA相互作用的宿主RBP.
- 阐明在IAV生命周期中识别的RBP的功能.
- 了解RBP介导病毒RNA调节的机制.
主要方法:
- 用RNA互动原子捕获 (RIC) 来隔离受感染人体细胞中与IAV mRNA结合的RBP.
- 通过验证实验证实了MKRN2与IAV mRNA的关联.
- 研究了MKRN2对IAVmRNA核出口的影响及其与GLE1的潜在相互作用.
主要成果:
- 确定MKRN2是宿主RBP,它与IAV mRNA结合并积极调节.
- MKRN2促进了IAV mRNA的核-细胞质贩运,可能通过与GLE1.1的相互作用.
- 由于MKRN2的耗尽导致IAVmRNA的核积累,这表明出口受损和潜在的降解.
结论:
- 在人类细胞中,MKRN2对于IAV mRNA的有效核出口至关重要.
- 通过促进病毒mRNA运输,MKRN2在支持IAV复制方面发挥着关键作用.
- 准MKRN2可能是一个潜在的抗病毒策略来对抗流感A病毒.
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