和补充因子H 402H之间的潜在双模相互作用,在SARS-CoV-2对补充替代途径的放松调节中
Stefanos A Tsiftsoglou1, Eleni Gavriilaki2
1Laboratory of Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece; Department of Biomedical Sciences, School of Health Sciences, Alexander Campus, International Hellenic University, Sindos, 57400, Greece.
概括
SARS-CoV-2 尖蛋白结合血红素,可能有助于病毒进入并逃避免疫反应. 补充因子H (CFH) 的特定遗传变异可能会增强这种血液介导的感染机制.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- SARS-CoV-2尖端糖蛋白在一个NTD域口袋内结合血红蛋白.
- 病毒感染性取决于细胞表面的硫酸肝,并激活了补充替代途径 (AP).
- 在补充因子H (CFH) 基因中的特定单核酸多态 (SNP),包括rs1061170,rs800292和rs1065489,在COVID-19患者中被检测到.
研究的目的:
- 为了研究SARS-CoV-2尖端蛋白在病毒入侵中的heme结合的作用.
- 探索CFH遗传变异与COVID-19感染动态之间的关联.
- 阐明和CFH变异可能影响病毒感染性和免疫逃避的机制.
主要方法:
- 在血结合基因 (HBM) 中对CFH残留402进行计算分析.
- 对欧洲人群关于CFH SNPs和单质类型的遗传数据的检查.
- 对CFH变异的生化特性关于血红相亲和辅因子活性的分析.
主要成果:
- CFH 402H变体 (编码为rs1061170小C等位基因) 位于一个血红素结合基因内.
- 血红蛋白与尖端蛋白结合可能会招募CFH 402H,以掩盖病毒颗粒从opsonization.
- 一个特定的单双型 (rs1061170 C,rs800292 A,rs1065489 T) 导致CFH 402H具有增加的血亲和力,但降低了辅因子活性,可能促进血介导感染和补充AP放松调节.
结论:
- 血与SARS-CoV-2尖端蛋白结合是病毒入侵的潜在机制.
- 特定的CFH遗传变异可能通过调节补充相互作用来增强血质介导病毒感染.
- 这种由血红素驱动的策略可能是一个由各种传染病原体利用的进化保存机制.
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