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Barbosa da Cruz D, Helms J, Aquino LR, Stiel L, Cougourdan L, Broussard C, Chafey P, Riès-Kautt M, Meziani F, Toti F, Gaussem P, Anglés-Cano E. DNA-bound elastase of neutrophil extracellular traps degrades plasminogen, reduces plasmin formation, and decreases fibrinolysis: proof of concept in septic shock plasma. FASEB J 2019; 33:14270-14280. [PMID: 31682515 DOI: 10.1096/fj.201901363rrr] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Activation of platelets and neutrophils in septic shock results in the formation of microvascular clots containing an intricate scaffold of fibrin with neutrophil extracellular traps (NETs) DNA. NETs contain multiple components that might impact endogenous fibrinolysis, resulting in failure to lyse clots in the microcirculation and residual systemic microthrombosis. We propose herein that the reservoir of human neutrophil elastase (HNE) on NETs may directly interfere with the fibrinolytic mechanism via a plasminogen proteolytic pathway. To investigate this mechanism, we constructed fibrin-NETs matrices by seeding and activating neutrophils onto a fibrin surface and monitored plasminogen activation or degradation. We demonstrate that the elastase activity of HNE-DNA complexes is protected from inhibition by plasma antiproteases and sustains its ability to degrade plasminogen. Using mass spectrometry proteomic analysis, we identified plasminogen fragments composed of kringle (K) domains (K1+2+3, k1+2+3+4) and the serine protease (SP) region (K5-SP). We further demonstrate that patients with septic shock with disseminated intravascular coagulation have circulating HNE-DNA complexes, HNE-derived plasminogen fragments, a low plasminogen concentration, and a reduced capacity to generate plasmin onto fibrin. In conclusion, we show that NETs bearing active HNE-DNA complexes reduce plasminogen into fragments, thus impairing fibrinolysis by decreasing the local plasminogen concentration, plasminogen binding to fibrin, and localized plasmin formation.-Barbosa da Cruz, D., Helms, J., Aquino, L. R., Stiel, L., Cougourdan, L., Broussard, C., Chafey, P., Riès-Kautt, M., Meziani, F., Toti, F., Gaussem, P., Anglés-Cano, E. DNA-bound elastase of neutrophil extracellular traps degrades plasminogen, reduces plasmin formation, and decreases fibrinolysis: proof of concept in septic shock plasma.
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Affiliation(s)
- Dayana Barbosa da Cruz
- Innovative Therapies in Haemostasis, INSERM Unité Mixte de Recherche (UMR)_S 1140, Université de Paris, Paris, France
| | - Julie Helms
- Service de Médecine Intensive-Réanimation, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,ImmunoRhumatologie Moléculaire, INSERM UMR_S 1109, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, Strasbourg, France
| | - Lluvia Ramírez Aquino
- Innovative Therapies in Haemostasis, INSERM Unité Mixte de Recherche (UMR)_S 1140, Université de Paris, Paris, France
| | - Laure Stiel
- Service de Médecine Intensive-Réanimation, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Regenerative Nanomedicine, INSERM UMR_S 1260, Université de Strasbourg, Strasbourg, France
| | - Lucas Cougourdan
- Innovative Therapies in Haemostasis, INSERM Unité Mixte de Recherche (UMR)_S 1140, Université de Paris, Paris, France
| | - Cedric Broussard
- Plateforme Protéomique 3P5, Université de Paris, Paris, France.,Institut Cochin, INSERM, Centre National de la Recherche Scientifique (CNRS), Université de Paris, Paris, France
| | - Philippe Chafey
- Plateforme Protéomique 3P5, Université de Paris, Paris, France.,Institut Cochin, INSERM, Centre National de la Recherche Scientifique (CNRS), Université de Paris, Paris, France
| | - Madeleine Riès-Kautt
- Plateforme Protéomique 3P5, Université de Paris, Paris, France.,Institut Cochin, INSERM, Centre National de la Recherche Scientifique (CNRS), Université de Paris, Paris, France
| | - Ferhat Meziani
- Service de Médecine Intensive-Réanimation, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Regenerative Nanomedicine, INSERM UMR_S 1260, Université de Strasbourg, Strasbourg, France
| | - Florence Toti
- Regenerative Nanomedicine, INSERM UMR_S 1260, Université de Strasbourg, Strasbourg, France
| | - Pascale Gaussem
- Innovative Therapies in Haemostasis, INSERM Unité Mixte de Recherche (UMR)_S 1140, Université de Paris, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service d'Hématologie Biologique, Hôpital Européen Georges Pompidou, Paris, France
| | - Eduardo Anglés-Cano
- Innovative Therapies in Haemostasis, INSERM Unité Mixte de Recherche (UMR)_S 1140, Université de Paris, Paris, France
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