对SARS-CoV-2RNA与宿主蛋白相互作用的发现和功能查询
Ryan A Flynn1, Julia A Belk2, Yanyan Qi3
1Stanford ChEM-H and Department of Chemistry, Stanford University, Stanford, CA, USA.
Cell
|March 20, 2021
概括
研究人员确定了309种结合SARS-CoV-2RNA的宿主蛋白,揭示了大多数细胞的病毒死亡. 这项研究强调线粒体是对抗SARS-CoV-2和其他病毒的关键防御平台.
科学领域:
- 病毒学
- 分子生物学
- 免疫学
背景情况:
- 目前正在进行的SARS-CoV-2大流行导致全球死亡率显著.
- 了解宿主病毒相互作用对于开发有效的抗病毒疗法至关重要.
- 结合RNA的蛋白质在病毒复制和宿主防御中起着至关重要的作用.
研究的目的:
- 综合识别与SARS-CoV-2RNA结合的宿主蛋白质.
- 确定不同RNA病毒之间的这些相互作用的特异性.
- 发现RNA结合蛋白在抗病毒防御中的功能作用,并确定治疗点.
主要方法:
- 通过质谱检测 (ChIRP-MS) 进行RNA结合蛋白的综合鉴定.
- 将ChIRP-MS数据与其他RNA病毒的数据集成,以评估病毒特异性.
- 针对性和比较性CRISPR查以评估RNA结合蛋白在病毒感染期间对宿主生存的功能影响.
- 通过结合RNA中心和CRISPR查方法研究线粒体在抗病毒活性中的作用.
主要成果:
- 鉴定了309种宿主蛋白质,在活跃感染期间与SARS-CoV-2RNA结合.
- 在RNA与宿主蛋白相互作用中显示出病毒特异性.
- 发现大多数功能性RNA结合蛋白保护宿主免受病毒诱导的细胞死亡.
- 在七种RNA病毒中确定了共享和SARS-CoV-2特异性抗病毒因子.
- 建立了SARS-CoV-2和线粒体之间的物理和功能联系,将线粒体定位为抗病毒活动的一般平台.
结论:
- 提供了功能性SARS-CoV-2RNA与宿主蛋白相互作用的全面目录.
- 突出了宿主RNA结合蛋白在抗病毒防御中的关键作用.
- 表明线粒体作为抗病毒活动的一般平台.
- 针对SARS-CoV-2和其他RNA病毒的潜在治疗向的指定的宿主途径.
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