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预测影响COVID-19易感性的人类和病毒蛋白质变体,并重新定位治疗方法
Vaishali P Waman1, Paul Ashford1, Su Datt Lam2
1Institute of Structural and Molecular Biology, University College London, London, WC1E 6BT, UK.
Scientific reports
|June 20, 2024
概括
人类蛋白质的遗传变异可以增加与SARS-CoV-2的结合亲和力,可能会增强COVID-19的易感性和免疫抑制. 监测这些增强亲和力的变体对于了解疾病风险至关重要.
科学领域:
- 基因组学和生物信息学
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
背景情况:
- 尽管接种了疫苗,COVID-19仍然是一个全球健康问题,尽管接种了疫苗,但可能会再次感染.
- 个人对COVID-19的敏感性有所不同,可能是由于遗传因素影响先天免疫反应.
- SARS-CoV-2利用先天性免疫抑制来进行病毒的进入和复制.
研究的目的:
- 研究人类免疫相关蛋白质中的遗传变异对COVID-19易感性的影响.
- 为了确定增强人类蛋白质和SARS-CoV-2蛋白质之间的结合亲和力的变体.
主要方法:
- 策划了19个SARS-CoV-2的数据集:来自蛋白质数据库和AlphaFold2-多重模型的人类蛋白质3D复合体.
- 在病毒和人类蛋白质的蛋白质-蛋白质接口区域中分析了误解变异.
- 通过计算预测了468种人类和212种SARS-CoV-2变异对结合亲缘关系的影响.
主要成果:
- 在13种人类蛋白质中预测了26种增强亲和力的变体,包括免疫基因 (例如,IFIH1,TRIM25) 和尖端受体 (例如,ACE2,AXL).
- 确定了常见的 (例如,IFIH1中的Y13N) 和罕见的变体.
- 讨论了这些变异的结构和功能影响,包括潜在的免疫抑制机制.
结论:
- 免疫相关蛋白质的遗传变异可以显著影响SARS-CoV-2的结合亲和力.
- 某些增强亲和力的变种可能会增加对COVID-19的易感性并降低免疫反应.
- 这些发现有助于理解对COVID-19易感性的遗传贡献,并可以为药物重用策略提供信息.
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