通过抗SARS-CoV-2抗体控制对SARS-CoV-2感染的补充诱导的炎症反应
Marta Bermejo-Jambrina1,2,3, Lieve Eh van der Donk4,5, John L van Hamme4,5
1Department of Experimental Immunology, Amsterdam UMC location AMC, Amsterdam, The Netherlands. m.bermejojambrina@amsterdamumc.nl.
The EMBO journal
|February 28, 2024
概括
补体系统通过对病毒进行opsonization,激活免疫细胞来驱动对SARS-CoV-2的早期免疫力. 严重的COVID-19患者的抗体可以阻止这一关键的免疫反应.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 传染性疾病 传染性疾病
背景情况:
- 失调的免疫反应和不受控制的炎症是严重的COVID-19的标志.
- 目前尚不完全了解SARS-CoV-2免疫诱导和调节的精确机制.
研究的目的:
- 调查补充系统在启动与生俱来的和适应性免疫力对SARS-CoV-2的作用.
- 探索抗体和补充受体如何影响SARS-CoV-2免疫反应.
主要方法:
- 研究了补充系统与SARS-CoV-2颗粒的相互作用.
- 研究了由补充-opsonized SARS-CoV-2 激活树突细胞的激活.
- 分析了补体受体抗体,患者血清和单克隆抗体对免疫反应的影响.
- 研究了阻断FcγRII (CD32) 对补充诱导免疫力的影响.
主要成果:
- 补充物通过莱克通路快速对SARS-CoV-2产生作用.
- 补充-opsonized SARS-CoV-2有效地激活树突细胞,诱导I型干扰素和促炎细胞因子.
- 对补充受体3和4的抗体,患者血清和抗SARS-CoV-2单克隆抗体抑制了这种反应.
- 在树突细胞上阻断FcγRII (CD32) 恢复了补充诱导的免疫力.
结论:
- 在急性SARS-CoV-2感染期间,补充介导的opsonization对于诱导先天性和适应性免疫力至关重要.
- 抗体反应似乎调节炎症并恢复感染后的免疫平衡.
- 补体系统调节失调和FcγRII信号可能会导致COVID-19的严重发病.
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