Complement and tissue factor-enriched neutrophil extracellular traps are key drivers in COVID-19 immunothrombosis

Emerging data indicate that complement and neutrophils contribute to the maladaptive immune response that fuels hyperinflammation and thrombotic microangiopathy, thereby increasing coronavirus 2019 (COVID-19) mortality. Here, we investigated how complement interacts with the platelet/neutrophil extr...

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Veröffentlicht in:The Journal of clinical investigation 2020-11, Vol.130 (11), p.6151-6157
Hauptverfasser: Skendros, Panagiotis, Mitsios, Alexandros, Chrysanthopoulou, Akrivi, Mastellos, Dimitrios C, Metallidis, Simeon, Rafailidis, Petros, Ntinopoulou, Maria, Sertaridou, Eleni, Tsironidou, Victoria, Tsigalou, Christina, Tektonidou, Maria, Konstantinidis, Theocharis, Papagoras, Charalampos, Mitroulis, Ioannis, Germanidis, Georgios, Lambris, John D, Ritis, Konstantinos
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container_end_page 6157
container_issue 11
container_start_page 6151
container_title The Journal of clinical investigation
container_volume 130
creator Skendros, Panagiotis
Mitsios, Alexandros
Chrysanthopoulou, Akrivi
Mastellos, Dimitrios C
Metallidis, Simeon
Rafailidis, Petros
Ntinopoulou, Maria
Sertaridou, Eleni
Tsironidou, Victoria
Tsigalou, Christina
Tektonidou, Maria
Konstantinidis, Theocharis
Papagoras, Charalampos
Mitroulis, Ioannis
Germanidis, Georgios
Lambris, John D
Ritis, Konstantinos
description Emerging data indicate that complement and neutrophils contribute to the maladaptive immune response that fuels hyperinflammation and thrombotic microangiopathy, thereby increasing coronavirus 2019 (COVID-19) mortality. Here, we investigated how complement interacts with the platelet/neutrophil extracellular traps (NETs)/thrombin axis, using COVID-19 specimens, cell-based inhibition studies, and NET/human aortic endothelial cell (HAEC) cocultures. Increased plasma levels of NETs, tissue factor (TF) activity, and sC5b-9 were detected in patients. Neutrophils of patients yielded high TF expression and released NETs carrying active TF. Treatment of control neutrophils with COVID-19 platelet-rich plasma generated TF-bearing NETs that induced thrombotic activity of HAECs. Thrombin or NETosis inhibition or C5aR1 blockade attenuated platelet-mediated NET-driven thrombogenicity. COVID-19 serum induced complement activation in vitro, consistent with high complement activity in clinical samples. Complement C3 inhibition with compstatin Cp40 disrupted TF expression in neutrophils. In conclusion, we provide a mechanistic basis for a pivotal role of complement and NETs in COVID-19 immunothrombosis. This study supports strategies against severe acute respiratory syndrome coronavirus 2 that exploit complement or NETosis inhibition.
doi_str_mv 10.1172/JCI141374
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Here, we investigated how complement interacts with the platelet/neutrophil extracellular traps (NETs)/thrombin axis, using COVID-19 specimens, cell-based inhibition studies, and NET/human aortic endothelial cell (HAEC) cocultures. Increased plasma levels of NETs, tissue factor (TF) activity, and sC5b-9 were detected in patients. Neutrophils of patients yielded high TF expression and released NETs carrying active TF. Treatment of control neutrophils with COVID-19 platelet-rich plasma generated TF-bearing NETs that induced thrombotic activity of HAECs. Thrombin or NETosis inhibition or C5aR1 blockade attenuated platelet-mediated NET-driven thrombogenicity. COVID-19 serum induced complement activation in vitro, consistent with high complement activity in clinical samples. Complement C3 inhibition with compstatin Cp40 disrupted TF expression in neutrophils. In conclusion, we provide a mechanistic basis for a pivotal role of complement and NETs in COVID-19 immunothrombosis. 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Medical Complete (Alumni)</collection><collection>Nursing &amp; Allied Health Database (Alumni Edition)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>SIRS Editorial</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>The Journal of clinical investigation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Skendros, Panagiotis</au><au>Mitsios, Alexandros</au><au>Chrysanthopoulou, Akrivi</au><au>Mastellos, Dimitrios C</au><au>Metallidis, Simeon</au><au>Rafailidis, Petros</au><au>Ntinopoulou, Maria</au><au>Sertaridou, Eleni</au><au>Tsironidou, Victoria</au><au>Tsigalou, Christina</au><au>Tektonidou, Maria</au><au>Konstantinidis, Theocharis</au><au>Papagoras, Charalampos</au><au>Mitroulis, Ioannis</au><au>Germanidis, Georgios</au><au>Lambris, John D</au><au>Ritis, Konstantinos</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Complement and tissue factor-enriched neutrophil extracellular traps are key drivers in COVID-19 immunothrombosis</atitle><jtitle>The Journal of clinical investigation</jtitle><addtitle>J Clin Invest</addtitle><date>2020-11-01</date><risdate>2020</risdate><volume>130</volume><issue>11</issue><spage>6151</spage><epage>6157</epage><pages>6151-6157</pages><issn>0021-9738</issn><eissn>1558-8238</eissn><abstract>Emerging data indicate that complement and neutrophils contribute to the maladaptive immune response that fuels hyperinflammation and thrombotic microangiopathy, thereby increasing coronavirus 2019 (COVID-19) mortality. Here, we investigated how complement interacts with the platelet/neutrophil extracellular traps (NETs)/thrombin axis, using COVID-19 specimens, cell-based inhibition studies, and NET/human aortic endothelial cell (HAEC) cocultures. Increased plasma levels of NETs, tissue factor (TF) activity, and sC5b-9 were detected in patients. Neutrophils of patients yielded high TF expression and released NETs carrying active TF. Treatment of control neutrophils with COVID-19 platelet-rich plasma generated TF-bearing NETs that induced thrombotic activity of HAECs. Thrombin or NETosis inhibition or C5aR1 blockade attenuated platelet-mediated NET-driven thrombogenicity. COVID-19 serum induced complement activation in vitro, consistent with high complement activity in clinical samples. Complement C3 inhibition with compstatin Cp40 disrupted TF expression in neutrophils. In conclusion, we provide a mechanistic basis for a pivotal role of complement and NETs in COVID-19 immunothrombosis. This study supports strategies against severe acute respiratory syndrome coronavirus 2 that exploit complement or NETosis inhibition.</abstract><cop>United States</cop><pub>American Society for Clinical Investigation</pub><pmid>32759504</pmid><doi>10.1172/JCI141374</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-0456-7015</orcidid><orcidid>https://orcid.org/0000-0002-9370-5776</orcidid><oa>free_for_read</oa></addata></record>
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subjects Aged
Aorta
Autophagy
Betacoronavirus - immunology
Betacoronavirus - metabolism
Biomedical research
Complement activation
Complement Activation - drug effects
Complement component C3
Complement Membrane Attack Complex - immunology
Complement Membrane Attack Complex - metabolism
Complement system
Complications and side effects
Concise Communication
Coronaviridae
Coronavirus Infections - blood
Coronavirus Infections - immunology
Coronaviruses
COVID-19
Development and progression
Endothelial cells
Extracellular Traps - immunology
Extracellular Traps - metabolism
Female
Health aspects
Humans
Immune response
Investigations
Leukocytes (neutrophilic)
Male
Middle Aged
Mortality
Neutrophils
Neutrophils - immunology
Neutrophils - metabolism
Pandemics
Patients
Peptides, Cyclic - pharmacology
Plasma
Plasma levels
Platelets
Pneumonia, Viral - blood
Pneumonia, Viral - immunology
Receptor, Anaphylatoxin C5a - antagonists & inhibitors
Receptor, Anaphylatoxin C5a - blood
Receptor, Anaphylatoxin C5a - immunology
Respiratory Distress Syndrome - blood
Respiratory Distress Syndrome - immunology
Respiratory Distress Syndrome - virology
Risk factors
SARS-CoV-2
Severe acute respiratory syndrome coronavirus 2
Thrombin
Thrombin - immunology
Thrombin - metabolism
Thromboplastin - immunology
Thromboplastin - metabolism
Thrombosis
Thrombosis - blood
Thrombosis - immunology
Thrombosis - virology
Thrombotic microangiopathy
Tissue factor
title Complement and tissue factor-enriched neutrophil extracellular traps are key drivers in COVID-19 immunothrombosis
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