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Association of COVID-19 inflammation with activation of the C5a-C5aR1 axis

机译:Covid-19炎症与C5A-C5AR1轴激活的结合

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摘要

Coronavirus disease 2019 (COVID-19) is a disease caused by infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and has resulted in a pandemic~(1). The C5a complement factor and its receptor C5aR1 (also known as CD88) have a key role in the initiation and maintenance of several inflammatory responses by recruiting and activating neutrophils and monocytes~(1). Here we provide a longitudinal analysis of immune responses, including phenotypic analyses of immune cells and assessments of the soluble factors that are present in the blood and bronchoalveolar lavage fluid of patients at various stages of COVID-19 severity, including those who were paucisymptomatic or had pneumonia or acute respiratory distress syndrome. The levels of soluble C5a were increased in proportion to the severity of COVID-19 and high expression levels of C5aR1 receptors were found in blood and pulmonary myeloid cells, which supports a role for the C5a-C5aR1 axis in the pathophysiology of acute respiratory distress syndrome. Anti-C5aR1 therapeutic monoclonal antibodies prevented the C5a-mediated recruitment and activation of human myeloid cells, and inhibited acute lung injury in human C5aR1 knock-in mice. These results suggest that blockade of the C5a-C5aR1 axis could be used to limit the infiltration of myeloid cells in damaged organs and prevent the excessive lung inflammation and endothelialitis that are associated with acute respiratory distress syndrome in patients with COVID-19.
机译:冠状病毒疾病2019(Covid-19)是一种由严重急性呼吸综合征冠状病毒2(SARS-COV-2)感染引起的疾病,导致大流行〜(1)。 C5A补体因子及其受体C5AR1(也称为CD88)在通过募集和激活中性粒细胞和单核细胞〜(1)开始和维持几种炎症反应中的关键作用。在这里,我们提供了对免疫反应的纵向分析,包括免疫细胞的表型分析,以及在Covid-19严重程度的各个阶段的患者的血液和支气管肺泡灌洗液中存在的可溶性因子的评估,包括持久性或有的人肺炎或急性呼吸窘迫综合症。可溶性C5a的水平与Covid-19的严重程度成比例增加,并且在血液和肺骨髓细胞中发现了C5AR1受体的高表达水平,其支持C5A-C5AR1轴在急性呼吸窘迫综合征的病理生理学中的作用。抗C5AR1治疗单克隆抗体可防止C5A介导的人骨髓细胞的招生和激活,并抑制人C5AR1敲击小鼠中的急性肺损伤。这些结果表明,C5A-C5AR1轴的阻断可用于限制骨髓细胞在受损器官中的渗透,并防止Covid-19患者与急性呼吸窘迫综合征有关的过度肺炎和内皮炎。

著录项

  • 来源
    《Nature》 |2020年第7836期|146-150|共5页
  • 作者单位

    Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Réanimation des Urgences|Aix Marseille Université;

    Innate Pharma;

    Aix Marseille Université CNRS INSERM CIML|Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Immunology Marseille Immunopole;

    Innate Pharma;

    Hôpital d'Instruction des Armées Laveran|Assistance Publique des Hôpitaux de Marseille;

    Innate Pharma;

    Innate Pharma;

    Innate Pharma;

    Innate Pharma;

    Innate Pharma;

    Innate Pharma;

    Innate Pharma;

    Aix Marseille Université CNRS INSERM CIML|Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Immunology Marseille Immunopole;

    Hôpital d'Instruction des Armées Laveran;

    Hôpital d'Instruction des Armées Laveran;

    Aix Marseille Université|Assistance Publique des Hôpitaux de Marseille Hôpital Nord Réanimation des Détresses Respiratoires et Infections Sévères Aix-Marseille Université;

    Aix Marseille Université|Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Réanimation Polyvalente Aix-Marseille Université;

    Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Réanimation des Urgences|Aix Marseille Université;

    Innate Pharma;

    Aix Marseille Université CNRS INSERM CIML|Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Internal Medicine;

    Aix Marseille Université CNRS INSERM CIML|Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Internal Medicine;

    Innate Pharma|Aix Marseille Université CNRS INSERM CIML|Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone Immunology Marseille Immunopole;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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