tRNA修饰:两个病毒的故事-SARS-CoV-2和ZIKVV
Patrick Eldin1, Laurence Briant1
1Institut de Recherche en Infectiologie de Montpellier (IRIM), University of Montpellier, CNRS UMR 9004, 1919 Route de Mende, 34293 Montpellier, France.
International journal of molecular sciences
|August 14, 2025
概括
像SARS-CoV-2和寨卡病毒这样的病毒操纵宿主转移RNA (tRNA) 修饰,特别是U34摇摆修饰. 这一策略通过克服编码子使用差异和支持病毒复制来确保有效的病毒蛋白质合成.
科学领域:
- 分子生物学分子生物学
- 病毒学 病毒学
- 遗传学 是一个遗传学.
背景情况:
- 转移RNA (tRNA) 修改对于准确高效的蛋白质合成至关重要.
- RNA病毒利用宿主细胞机械,包括修饰的tRNA,用于自身的蛋白质生产.
- 病毒和宿主编码子的使用往往不同,这可能会给病毒带来翻译挑战.
研究的目的:
- 为了调查SARS-CoV-2和寨卡病毒 (ZIKV) 如何管理源自码头使用不匹配的翻译挑战.
- 确定这些病毒是否操纵宿主tRNA表转录组以优化病毒蛋白质合成.
主要方法:
- 在病毒基因组中分析编码偏差指数.
- 在感染宿主细胞中监测tRNA修饰水平.
- 对U34tRNA功能进行实验操作,以评估对病毒复制的影响.
主要成果:
- 在SARS-CoV-2和ZIKV基因组中,人们更喜欢由依赖于U34波动修饰的tRNA解码的编码子.
- 观察到这两种病毒都在感染期间增强了U34的tRNA修饰.
- 破坏U34tRNA功能显著阻碍了SARS-CoV-2和ZIKV的复制.
结论:
- SARS-CoV-2和ZIKV病毒积极操纵宿主tRNA表转录组,特别是U34修饰.
- 这种操纵对于克服编码子偏差和确保有效的病毒基因组翻译和复制至关重要.
- 向tRNA表转录组修改为抗病毒策略提供了潜在的途径.
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