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Keulen GM, Huckriede J, Wichapong K, Nicolaes GAF. Histon activities in the extracellular environment: regulation and prothrombotic implications. Curr Opin Hematol 2024; 31:230-237. [PMID: 39087372 PMCID: PMC11296287 DOI: 10.1097/moh.0000000000000827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
PURPOSE OF REVIEW Thromboembolic complications are a major contributor to global mortality. The relationship between inflammation and coagulation pathways has become an emerging research topic where the role of the innate immune response, and specifically neutrophils in "immunothrombosis" are receiving much attention. This review aims to dissect the intricate interplay between histones (from neutrophils or cellular damage) and the haemostatic pathway, and to explore mechanisms that may counteract the potentially procoagulant effects of those histones that have escaped their nuclear localization. RECENT FINDINGS Extracellular histones exert procoagulant effects via endothelial damage, platelet activation, and direct interaction with coagulation proteins. Neutralization of histone activities can be achieved by complexation with physiological molecules, through pharmacological compounds, or via proteolytic degradation. Details of neutralization of extracellular histones are still being studied. SUMMARY Leveraging the understanding of extracellular histone neutralization will pave the way for development of novel pharmacological interventions to treat and prevent complications, including thromboembolism, in patients in whom extracellular histones contribute to their overall clinical status.
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Affiliation(s)
- Gwen M Keulen
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), University of Maastricht, Maastricht, The Netherlands
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Yong J, Toh CH. The convergent model of coagulation. J Thromb Haemost 2024; 22:2140-2146. [PMID: 38815754 DOI: 10.1016/j.jtha.2024.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/18/2024] [Accepted: 05/10/2024] [Indexed: 06/01/2024]
Abstract
It is increasingly apparent that the pathologic interplay between coagulation and innate immunity, ie, immunothrombosis, forms the common basis of many challenges across the boundaries of specialized medicine and cannot be fully explained by the conventional concepts of cascade and cell-based coagulation. To improve our understanding of coagulation, we propose a model of coagulation that converges with inflammation and innate immune activation as a unified response toward vascular injury. Evolutionarily integral to the convergent response are damage-associated molecular patterns, which are released as a consequence of injury. Damage-associated molecular patterns facilitate diverse interactions within and between systems, not only to complement and reinforce cell-based clot formation but also to steer the response toward clot resolution and wound healing. By extending coagulation beyond its current boundaries, the convergent model aims to deliver novel diagnostics and therapeutics for contemporary and unexpected challenges across medicine, as exposed by COVID-19 and vaccine-induced immune thrombotic thrombocytopenia.
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Affiliation(s)
- Jun Yong
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK; The Roald Dahl Haemostasis and Thrombosis Centre, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Cheng-Hock Toh
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK; The Roald Dahl Haemostasis and Thrombosis Centre, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK.
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Nicolaes GAF, Soehnlein O. Targeting extranuclear histones to alleviate acute and chronic inflammation. Trends Pharmacol Sci 2024; 45:651-662. [PMID: 38853103 DOI: 10.1016/j.tips.2024.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 05/22/2024] [Accepted: 05/22/2024] [Indexed: 06/11/2024]
Abstract
Extracellular histones instigate an inflammatory triad - centered on cytotoxicity, immune cell stimulation, and coagulation - ultimately shaping the dynamics and outcome of various inflammatory pathologies. Given the virtual absence of beneficial functions of histones in the extracellular space, in recent years a number of interference strategies have emerged. In this review we summarize pathogenic functions of extracellular histones and highlight current developments of therapeutic interference. Finally, we elaborate on the current status of preclinical attempts to interfere with extracellular histones in the context of a focus on sepsis and cardiovascular diseases, both of which are leading causes of mortality worldwide.
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Affiliation(s)
- Gerry A F Nicolaes
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), University of Maastricht, The Netherlands.
| | - Oliver Soehnlein
- Institute of Experimental Pathology (ExPat), Center of Molecular Biology of Inflammation (ZMBE), University of Münster, Münster, Germany.
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Affiliation(s)
- Guozheng Wang
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom
- Department of Haematology, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
| | - Simon Timothy Abrams
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom
- Department of Haematology, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
| | - Cheng-Hock Toh
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom
- Roald Dahl Haemostasis & Thrombosis Centre, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
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Costantini TW, Kornblith LZ, Pritts T, Coimbra R. The intersection of coagulation activation and inflammation after injury: What you need to know. J Trauma Acute Care Surg 2024; 96:347-356. [PMID: 37962222 PMCID: PMC11001294 DOI: 10.1097/ta.0000000000004190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Affiliation(s)
- Todd W Costantini
- From the Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery (T.W.C.), UC San Diego School of Medicine, San Diego; Department of Surgery (L.Z.K.), Zuckerberg San Francisco General Hospital, University of California, San Francisco, San Francisco, California; Department of Surgery (T.P.), University of Cincinnati College of Medicine, Cincinnati, Ohio; and Comparative Effectiveness and Clinical Outcomes Research Center (R.C.), Riverside University Health System, Loma Linda University School of Medicine, Riverside, California
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Gando S, Levi M, Toh CH. Trauma-induced innate immune activation and disseminated intravascular coagulation. J Thromb Haemost 2024; 22:337-351. [PMID: 37816463 DOI: 10.1016/j.jtha.2023.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/12/2023]
Abstract
Dysregulated innate immunity participates in the pathomechanisms of disseminated intravascular coagulation (DIC) in trauma-induced coagulopathy. Accidental and regulated cell deaths and neutrophil extracellular traps release damage-associated molecular patterns (DAMPs), such as histones, nuclear and mitochondrial DNA, and high-mobility group box 1, into circulation immediately after trauma. DAMP-induced inflammation activation releases tissue factor-bearing procoagulant extracellular vesicles through gasdermin D-mediated pore formation and plasma membrane rupture by regulated cell death. DAMPs also evoke systemic inflammation, platelet, coagulation activation, and impaired fibrinolysis associated with endothelial injury, leading to the dysfunction of anticoagulation systems, which are the main pathophysiological mechanisms of DIC. All these processes induce systemic thrombin generation in vivo, not restricted to the injury sites immediately after trauma. Thrombin generation at the site of injury stops bleeding and maintains homeostasis. However, DIC associated with endothelial injury generates massive thrombin, enhancing protease-activated, receptor-mediated bidirectional interplays between inflammation and coagulation, aggravating the diverse actions of thrombin and disturbing homeostasis. Insufficiently regulated thrombin causes disseminated microvascular thrombosis, resulting in tissue hypoxia due to reduced oxygen delivery, and mitochondrial dysfunction due to DAMPs causes tissue dysoxia. In addition, DAMP-induced calcium influx and overload, as well as neutrophil activation, play a role in endothelial cell injury. Tissue hypoxia and cytotoxicity result in multiple organ dysfunction in DIC after trauma. Controls against dysregulated innate immunity evoking systemic inflammation, thrombin generation, and cytotoxicity are key issues in improving the prognosis of DIC in trauma-induced coagulopathy.
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Affiliation(s)
- Satoshi Gando
- Department of Acute and Critical Care Medicine, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan; Division of Acute and Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan.
| | - Marcel Levi
- Department of Vascular Medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands; Department of Medicine, University College London Hospitals NHS Foundation Trust, and Cardio-Metabolic Program - NIHR UCLH/UCL BRC London, London, United Kingdom
| | - Cheng-Hock Toh
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom; Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
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Yong J, Toh CH. Rethinking coagulation: from enzymatic cascade and cell-based reactions to a convergent model involving innate immune activation. Blood 2023; 142:2133-2145. [PMID: 37890148 DOI: 10.1182/blood.2023021166] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/12/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023] Open
Abstract
ABSTRACT Advancements in the conceptual thinking of hemostasis and thrombosis have been catalyzed by major developments within health research over several decades. The cascade model of coagulation was first described in the 1960s, when biochemistry gained prominence through innovative experimentation and technical developments. This was followed by the cell-based model, which integrated cellular coordination to the enzymology of clot formation and was conceptualized during the growth period in cell biology at the turn of the millennium. Each step forward has heralded a revolution in clinical therapeutics, both in procoagulant and anticoagulant treatments to improve patient care. In current times, the COVID-19 pandemic may also prove to be a catalyst: thrombotic challenges including the mixed responses to anticoagulant treatment and the vaccine-induced immune thrombotic thrombocytopenia have exposed limitations in our preexisting concepts while simultaneously demanding novel therapeutic approaches. It is increasingly clear that innate immune activation as part of the host response to injury is not separate but integrated into adaptive clot formation. Our review summarizes current understanding of the major molecules facilitating such a cross talk between immunity, inflammation and coagulation. We demonstrate how such effects can be layered upon the cascade and cell-based models to evolve conceptual understanding of the physiology of immunohemostasis and the pathology of immunothrombosis.
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Affiliation(s)
- Jun Yong
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom
- The Roald Dahl Haemostasis and Thrombosis Centre, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
| | - Cheng-Hock Toh
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom
- The Roald Dahl Haemostasis and Thrombosis Centre, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
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Marongiu F, Ruberto MF, Marongiu S, Matucci Cerinic M, Barcellona D. A journey to vasculopathy in systemic sclerosis: focus on haemostasis and thrombosis. Clin Exp Med 2023; 23:4057-4064. [PMID: 37914967 DOI: 10.1007/s10238-023-01222-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 10/15/2023] [Indexed: 11/03/2023]
Abstract
Systemic sclerosis is a multisystem connective tissue disease, characterized by endothelial autoimmune activation, along with tissue and vascular fibrosis leading to vasculopathy and to a progressive loss of angiogenesis. This condition further deranges the endothelial barrier favouring the opening of the endothelial junctions allowing the vascular leak in the surrounding tissues: this process may induce cell detachment which allows the contact between platelets and collagen present in the exposed subendothelial layer. Platelets first adhere to collagen via glycoprotein VI and then, immediately aggregate because of the release of von Willebrand factor which is a strong activator of platelet aggregation. Activated platelets exert their procoagulant activity, exposing on their membrane phospholipids and phosphatidylserine, enabling the adsorption of clotting factors ready to form thrombin which in turn drives the amplification of the coagulative cascade. An essential role in the activation of blood coagulation is the tissue factor (TF), which triggers blood coagulation. The TF is found abundantly in the subendothelial collagen and is also expressed by fibroblasts providing a haemostatic covering layer ready to activate coagulation when the endothelial injury occurs. The aim of this review is to focus the attention on the underlying mechanisms related to haemostasis and thrombosis pathophysiology which may have a relevant role in SSc as well as on a possible role of anticoagulation in this disease.
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Affiliation(s)
- Francesco Marongiu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
- Thrombosis and Haemostasis Unit, Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy
| | - Maria Filomena Ruberto
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Silvia Marongiu
- Internal Medicine Unit, SS Trinità Hospital of Cagliari, Cagliari, Italy
| | - Marco Matucci Cerinic
- Unit of Immunology, Rheumatology, Allergy and Rare Diseases (UnIRAR), IRCCS San Raffaele Hospital, Milan, Italy
| | - Doris Barcellona
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.
- Thrombosis and Haemostasis Unit, Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy.
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