单细胞介导的血栓形成与循环组织因子和COVID-19中的免疫有关
Sascha N Goonewardena1, Qinzhong Chen2, Ashley M Tate1
1Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor (S.N.G., A.M.T., O.G.G., D.D., P.K.B., S.S.H., D.J.P.).
Arteriosclerosis, thrombosis, and vascular biology
|March 21, 2024
概括
严重的COVID-19涉及免疫和血液凝固标记物的增加,特别是单细胞中的组织因子. 来自严重病例的血清激活单细胞,突出显示了COVID-19中炎症和血栓形成的机制.
科学领域:
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
- 传染性疾病 传染性疾病
背景情况:
- SARS-CoV-2 导致COVID-19,与炎症,凝血病和血栓形成有关.
- 骨髓状细胞是COVID-19免疫反应的核心.
- 在COVID-19中连接炎症和血栓形成的机制尚未完全理解.
研究的目的:
- 在COVID-19患者中定义循环蛋白质组和免疫细胞表型.
- 阐明COVID-19病原体背后的分子机制.
主要方法:
- 系统生物学方法:蛋白质组学,转录组学,质量细胞计.
- 在COVID-19患者中分析循环标记物和免疫细胞表型 (n=35).
- 对炎症和血管功能障碍标志物的评估.
主要成果:
- 在严重的COVID-19中,炎症 (CCL23,IL-6) 和血管功能障碍 (ACE2,TF) 标志物升高.
- 在严重的COVID-19中,单细胞的组织因子 (TF) 表达增加.
- 严重的COVID-19患者的循环免疫细胞中存在免疫的证据,对Toll-like受体激活的反应减少.
- 来自严重COVID-19的血清激活了单细胞并诱导了TF表达.
结论:
- 阐明了COVID-19中免疫功能障碍和凝血异常的病理机制.
- 有助于了解SARS-CoV-2感染.
- 表明了新的诊断和治疗策略的潜力.
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