1
|
Urano T, Sano Y, Suzuki Y, Okada M, Sano H, Honkura N, Morooka N, Doi M, Suzuki Y. Evaluation of thrombomodulin/thrombin activatable fibrinolysis inhibitor function in plasma using tissue-type plasminogen activator-induced plasma clot lysis time. Res Pract Thromb Haemost 2024; 8:102463. [PMID: 39026660 PMCID: PMC11255936 DOI: 10.1016/j.rpth.2024.102463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/22/2024] [Accepted: 05/09/2024] [Indexed: 07/20/2024] Open
Abstract
Background Thrombin activatable fibrinolysis inhibitor (TAFI) is one of the most important physiological fibrinolysis inhibitors. Its inhibitory efficacy under physiological conditions remains uncertain. Objectives Elucidate the role of soluble thrombomodulin (sTM)/TAFI axis in the regulation of fibrinlysis. Methods Since thrombin is required to generate activated TAFI (TAFIa) that targets the C-terminal lysine of partially digested fibrin, a clot lysis assay is suitable for evaluating its function. Using tissue-type plasminogen activator-induced plasma clot lysis time (tPA-PCLT) together with TAFIa inhibitor and recombinant sTM (rsTM), we evaluated the specific function of TM/TAFI in the plasma milieu. Results tPA-PCLT values were significantly shortened by the TAFIa inhibitor. rsTM supplementation prolonged tPA-PCLT, which was shortened by the TAFIa inhibitor to a time similar to that obtained without rsTM and with the TAFIa inhibitor. Plasma obtained from patients treated with rsTM showed prolonged tPA-PCLT, which was shortened by the TAFIa inhibitor but not further prolonged by rsTM. However, no significant correlation was observed between tPA-PCLT and parameters of TM/TAFI system in the plasma. Conclusion The role of the TM/TAFI system in regulating fibrinolysis was successfully evaluated using TAFIa inhibitor and rsTM. Trace amounts of soluble TM in normal plasma appeared sufficient to activate TAFI and inhibit fibrinolysis. Further, a therapeutic dose of rsTM appeared sufficient to activate TAFI and regulate fibrinolysis in the plasma milieu.
Collapse
Affiliation(s)
- Tetsumei Urano
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
- Shizuoka Graduate University of Public Health, Shizuoka, Japan
| | - Yoshie Sano
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yuji Suzuki
- Department of Anesthesiology and Intensive Care Unit, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Masahiko Okada
- Misakaeno-sono Ayumino-ie for Children and Persons with Severe Motor and Intellectual Disabilities, Omura, Nagasaki, Japan
| | - Hideto Sano
- Department of Physiology, Tokai University School of Medicine, Tokyo, Japan
| | - Naoki Honkura
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Nanami Morooka
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Matsuyuki Doi
- Department of Anesthesiology and Intensive Care Unit, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
- Intensive Care Unit, Hamamatsu Medical Center, Hamamatsu, Shizuoka, Japan
| | - Yuko Suzuki
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| |
Collapse
|
2
|
Ruf M, Cunningham S, Wandersee A, Brox R, Achenbach S, Strobel J, Hackstein H, Schneider S. SERPINC1 c.1247dupC: a novel SERPINC1 gene mutation associated with familial thrombosis results in a secretion defect and quantitative antithrombin deficiency. Thromb J 2024; 22:19. [PMID: 38347553 PMCID: PMC10860291 DOI: 10.1186/s12959-024-00589-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 02/01/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Antithrombin (AT) is an important anticoagulant in hemostasis. We describe here the characterization of a novel AT mutation associated with clinically relevant thrombosis. A pair of sisters with confirmed type I AT protein deficiency was genetically analyzed on suspicion of an inherited SERPINC1 mutation. A frameshift mutation, c.1247dupC, was identified and the effect of this mutation was examined on the cellular and molecular level. METHODS Plasmids for the expression of wild-type (WT) and mutated SERPINC1 coding sequence (CDS) fused to green fluorescent protein (GFP) or hemagglutinin (HA) tag were transfected into HEK293T cells. Subcellular localization and secretion of the respective fusion proteins were analyzed by confocal laser scanning microscopy and Western blot. RESULTS The c.1247dupC mutation results in a frameshift in the CDS of the SERPINC1 gene and a subsequently altered amino acid sequence (p.Ser417LysfsTer48). This alteration affects the C-terminus of the AT antigen and results in impaired secretion as confirmed by GFP- and HA-tagged mutant AT analyzed in HEK293T cells. CONCLUSION The p.Ser417LysfsTer48 mutation leads to impaired secretion, thus resulting in a quantitative AT deficiency. This is in line with the type I AT deficiency observed in the patients.
Collapse
Affiliation(s)
- Maximilian Ruf
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Sarah Cunningham
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Alexandra Wandersee
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Regine Brox
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Susanne Achenbach
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Julian Strobel
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Holger Hackstein
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Sabine Schneider
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany.
| |
Collapse
|
3
|
Siebert AE, Brake MA, Verbeek SC, Johnston AJ, Morgan AP, Cleuren AC, Jurek AM, Schneider CD, Germain DM, Battistuzzi FU, Zhu G, Miller DR, Johnsen JM, Pardo-Manuel de Villena F, Rondina MT, Westrick RJ. Identification of genomic loci regulating platelet plasminogen activator inhibitor-1 in mice. J Thromb Haemost 2023; 21:2917-2928. [PMID: 37364776 PMCID: PMC10826891 DOI: 10.1016/j.jtha.2023.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 05/09/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023]
Abstract
BACKGROUND Plasminogen activator inhibitor-1 (PAI-1, Serpine1) is an important circulating fibrinolysis inhibitor. PAI-1 exists in 2 pools, packaged within platelet α-granules and freely circulating in plasma. Elevated plasma PAI-1 levels are associated with cardiovascular disease. However, little is known about the regulation of platelet PAI-1 (pPAI-1). OBJECTIVES We investigated the genetic control of pPAI-1 levels in mice and humans. METHODS We measured pPAI-1 antigen levels via enzyme-linked immunosorbent assay in platelets isolated from 10 inbred mouse strains, including LEWES/EiJ (LEWES) and C57BL/6J (B6). LEWES and B6 were crossed to produce the F1 generation, B6LEWESF1. B6LEWESF1 mice were intercrossed to produce B6LEWESF2 mice. These mice were subjected to genome-wide genetic marker genotyping followed by quantitative trait locus analysis to identify pPAI-1 regulatory loci. RESULTS We identified differences in pPAI-1 between several laboratory strains, with LEWES having pPAI-1 levels more than 10-fold higher than those in B6. Quantitative trait locus analysis of B6LEWESF2 offspring identified a major pPAI-1 regulatory locus on chromosome 5 from 136.1 to 137.6 Mb (logarithm of the odds score, 16.2). Significant pPAI-1 modifier loci on chromosomes 6 and 13 were also identified. CONCLUSION Identification of pPAI-1 genomic regulatory elements provides insights into platelet/megakaryocyte-specific and cell type-specific gene expression. This information can be used to design more precise therapeutic targets for diseases where PAI-1 plays a role.
Collapse
Affiliation(s)
- Amy E Siebert
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA
| | - Marisa A Brake
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA
| | - Stephanie C Verbeek
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA
| | | | - Andrew P Morgan
- Department of Medicine, Duke University School of Medicine, Duke University, Durham, North Carolina, USA
| | - Audrey C Cleuren
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Adrianna M Jurek
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA
| | - Caitlin D Schneider
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA
| | - Derrik M Germain
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA
| | - Fabia U Battistuzzi
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA; Department of Bioengineering, Oakland University, Rochester, Michigan, USA; Centers for Data Science and Big Data Analytics and Biomedical Research, Oakland University, Rochester, Michigan, USA
| | - Guojing Zhu
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Darla R Miller
- Department of Genetics, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jill M Johnsen
- Department of Medicine, Institute for Stem Cell & Regenerative Medicine, and Center for Cardiovascular Biology, University of Washington, Seattle, Washington, USA
| | - Fernando Pardo-Manuel de Villena
- Department of Genetics, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Matthew T Rondina
- Molecular Medicine Program, Departments of Internal Medicine and Pathology, the University of Utah, Salt Lake City, Utah, USA; The George E. Wahlen Department of Medical Affairs Medical Center, Salt Lake City, Utah, USA
| | - Randal J Westrick
- Department of Biological Sciences, Oakland University, Rochester, Michigan, USA; Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA; Department of Bioengineering, Oakland University, Rochester, Michigan, USA; Centers for Data Science and Big Data Analytics and Biomedical Research, Oakland University, Rochester, Michigan, USA; Eye Research Center and Department of Foundational Medical Studies, Oakland University William Beaumont School of Medicine, Rochester, Michigan, USA.
| |
Collapse
|
4
|
Zheng Z, Mukhametova L, Boffa MB, Moore EE, Wolberg AS, Urano T, Kim PY. Assays to quantify fibrinolysis: strengths and limitations. Communication from the International Society on Thrombosis and Haemostasis Scientific and Standardization Committee on fibrinolysis. J Thromb Haemost 2023; 21:1043-1054. [PMID: 36759279 PMCID: PMC10109242 DOI: 10.1016/j.jtha.2023.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 01/15/2023]
Abstract
Fibrinolysis is a series of enzymatic reactions that degrade insoluble fibrin. Plasminogen activators convert the zymogen plasminogen to the active serine protease plasmin, which cleaves and solubilizes crosslinked fibrin clots into fibrin degradation products. The quantity and quality of fibrinolytic enzymes, their respective inhibitors, and clot structure determine overall fibrinolysis. The quantity of protein can be measured by antigen-based assays, and both quantity and quality can be assessed using functional assays. Furthermore, variations of commonly used assays have been reported, which are tailored to address the role(s) of specific fibrinolytic factors and cellular elements (eg, platelets, neutrophils, and red blood cells). Although the concentration and/or activity of a protein can be quantified, how these individual components contribute to the overall fibrinolysis outcome can be challenging to determine. This difficulty is due to temporal changes within and around the thrombi during the clot breakdown, particularly the fibrin matrix structure, and composition. Furthermore, terms such as "fibrinolytic activity/potential," "plasminogen activation," and "plasmin activity" are often used interchangeably despite having different definitions. The purpose of this review is to 1) summarize the assays measuring fibrinolysis activity and potential, 2) facilitate the interpretation of data generated by these assays, and 3) summarize the strengths and limitations of these assays.
Collapse
Affiliation(s)
- Ze Zheng
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, USA; Blood Research Institute, Versiti Blood Center of Wisconsin, Milwaukee, Wisconsin, USA
| | - Liliya Mukhametova
- Chemical Enzymology Department, Chemistry Faculty, Lomonosov Moscow State University, Moscow, Russia
| | - Michael B Boffa
- Department of Biochemistry and Robarts Research Institute, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, Ontario, Canada
| | - Ernest E Moore
- Department of Surgery, Ernest E. Moore Shock Trauma Center at Denver Health, University of Colorado, Denver, Colorado, USA
| | - Alisa S Wolberg
- Department of Pathology and Laboratory Medicine and UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Tetsumei Urano
- Department of Medical Physiology, Hamamatsu University School of Medicine and Shizuoka Graduate University of Public Health, Hamamatsu, Japan
| | - Paul Y Kim
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada; Thrombosis and Atherosclerosis Research Institute, Hamilton, Ontario, Canada.
| |
Collapse
|
5
|
Valke LLFG, Meijer D, Nieuwenhuizen L, Laros‐van Gorkom BAP, Blijlevens NMA, Heerde WL, Schols SEM. Fibrinolytic assays in bleeding of unknown cause: Improvement in diagnostic yield. Res Pract Thromb Haemost 2022; 6:e12681. [PMID: 35316940 PMCID: PMC8922970 DOI: 10.1002/rth2.12681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 11/11/2022] Open
Abstract
Introduction Aim Methods Results Discussion
Collapse
Affiliation(s)
- Lars L. F. G. Valke
- Department of Hematology Radboud University Medical Center Nijmegen The Netherlands
- Hemophilia Treatment Center Nijmegen‐Eindhoven‐Maastricht The Netherlands
| | - Danielle Meijer
- Department of Laboratory Medicine Laboratory of Hematology Radboud University Medical Center Nijmegen The Netherlands
| | - Laurens Nieuwenhuizen
- Hemophilia Treatment Center Nijmegen‐Eindhoven‐Maastricht The Netherlands
- Department of Hematology Maxima Medical Center Veldhoven The Netherlands
| | - Britta A. P. Laros‐van Gorkom
- Department of Hematology Radboud University Medical Center Nijmegen The Netherlands
- Hemophilia Treatment Center Nijmegen‐Eindhoven‐Maastricht The Netherlands
| | | | - Waander L. Heerde
- Hemophilia Treatment Center Nijmegen‐Eindhoven‐Maastricht The Netherlands
- Enzyre BV Novio Tech Campus Nijmegen The Netherlands
| | - Saskia E. M. Schols
- Department of Hematology Radboud University Medical Center Nijmegen The Netherlands
- Hemophilia Treatment Center Nijmegen‐Eindhoven‐Maastricht The Netherlands
| |
Collapse
|
6
|
Asano Y, Iwaki T, Umemura K, Kanayama N, Itoh H. Fibrin-mediated growth restriction of early-stage human trophoblasts is switched to growth promotion through fibrinolysis. Hum Reprod 2021; 36:3108-3121. [PMID: 34597378 DOI: 10.1093/humrep/deab223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 09/02/2021] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION Does fibrin promote trophoblast growth in human and mouse blastocysts during early embryo implantation? SUMMARY ANSWER Mouse blastocysts were unaffected by fibrin; however, human blastocysts were significantly suppressed by fibrin in trophoblast growth and then switched to growth promotion through increased fibrinolysis with urokinase-type plasminogen activator (uPA) activity. WHAT IS KNOWN ALREADY Fibrin(ogen) plays an important role in various physiological processes and is also critical for maintaining feto-maternal attachment during pregnancy. The addition of fibrin to embryo transfer media has been used to increase implantation rates in human ART; however, its mechanism of action' in vitro has not yet been characterized. STUDY DESIGN, SIZE, DURATION Vitrified mouse and human blastocysts were warmed and individually cultured in vitro for up to 120 and 168 h, respectively, on a fibrin substrate. Blastocysts were cultured at 37°C in 6% CO2, 5% O2 and 89% N2. Blastocyst development and related fibrinolytic factors were analyzed. PARTICIPANTS/MATERIALS, SETTING, METHODS ICR strain mouse embryos were purchased from a commercial supplier. Human blastocysts were donated with informed consent from two fertility centers. Mouse and human blastocysts cultured on fibrin-coated plates were compared to those on non-coated and collagen-coated plates in vitro. Trophoblast growth and fibrin degradation were assessed based on the cell area and fibrin-free area, respectively. Fibrinolytic factors were detected in supernatants using plasminogen-casein zymography. The fibrinolytic activity of blastocysts was investigated using a selective uPA inhibitor, exogenous uPA, plasminogen activator inhibitor-1 (PAI-1) inhibitor and fibrin degradation products (FDPs). Fibrinolysis-related mRNA expression level was detected using quantitative real-time PCR. MAIN RESULTS AND THE ROLE OF CHANCE Fibrin did not affect the developmental speed or morphology of mouse blastocysts, and a large fibrin-degrading region was observed in the attachment stage. In contrast, fibrin significantly suppressed the outgrowth of trophoblasts in human blastocysts, and trophoblasts grew after the appearance of small fibrin-degrading regions. uPA was identified as a fibrinolytic factor in the conditioned medium, and uPA activity was significantly weaker in human blastocysts than in mouse blastocysts. The inhibition of uPA significantly reduced the outgrowth of trophoblasts in mouse and human blastocysts. Human blastocysts expressed PLAU (uPA), PLAUR (uPA receptor), SERPINE1 (PAI-1) and SERPINB2 (PAI-2), whereas mouse blastocysts were limited to Plau, Plaur and Serpine1. In a subsequent experiment on human blastocysts, the addition of exogenous uPA and the PAI-1 inhibitor promoted trophoblast growth in the presence of fibrin, as did the addition of FDPs. LIMITATIONS, REASONS FOR CAUTION This model excludes maternal factors and may not be fully reproduced in vivo. Donated human embryos are surplus embryos that may inherently exhibit reduced embryonic development. In addition, donated ART-derived embryos may exhibit weak uPA activity, because women with sufficient uPA-active embryos may not originally require ART. The present study used orthodox culture methods, and results may change with the application of recently developed protocols for culture blastocysts beyond the implantation stage. WIDER IMPLICATIONS OF THE FINDINGS The present results suggest that the distinct features of trophoblast outgrowth in human blastocysts observed in the presence of fibrin are regulated by a phenotypic conversion induced by contact with fibrin and FDPs. Mouse embryos did not exhibit the human phenomenon, indicating that the present results may be limited to humans. STUDY FUNDING/COMPETING INTEREST(S) The present study was supported by the Department of Obstetrics and Gynecology at the Hamamatsu University School of Medicine and Kishokai Medical Corporation. None of the authors have any conflicts of interest to declare. TRIAL REGISTRATION NUMBER N/A.
Collapse
Affiliation(s)
- Yukiko Asano
- Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Hamamatsu, Japan.,Department of Infertility, Royal Bell Clinic, Nagoya, Japan
| | - Takayuki Iwaki
- Department of Pharmacology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kazuo Umemura
- Department of Pharmacology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Naohiro Kanayama
- Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hiroaki Itoh
- Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| |
Collapse
|
7
|
Izzo C, Vitillo P, Di Pietro P, Visco V, Strianese A, Virtuoso N, Ciccarelli M, Galasso G, Carrizzo A, Vecchione C. The Role of Oxidative Stress in Cardiovascular Aging and Cardiovascular Diseases. Life (Basel) 2021; 11:60. [PMID: 33467601 PMCID: PMC7829951 DOI: 10.3390/life11010060] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 12/12/2022] Open
Abstract
Aging can be seen as process characterized by accumulation of oxidative stress induced damage. Oxidative stress derives from different endogenous and exogenous processes, all of which ultimately lead to progressive loss in tissue and organ structure and functions. The oxidative stress theory of aging expresses itself in age-related diseases. Aging is in fact a primary risk factor for many diseases and in particular for cardiovascular diseases and its derived morbidity and mortality. Here we highlight the role of oxidative stress in age-related cardiovascular aging and diseases. We take into consideration the molecular mechanisms, the structural and functional alterations, and the diseases accompanied to the cardiovascular aging process.
Collapse
Affiliation(s)
- Carmine Izzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Paolo Vitillo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Paola Di Pietro
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Valeria Visco
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Andrea Strianese
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Nicola Virtuoso
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Michele Ciccarelli
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Gennaro Galasso
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Albino Carrizzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
- Department of Angio-Cardio-Neurology, Vascular Physiopathology Unit, IRCCS Neuromed, 86077 Pozzilli, Isernia, Italy
| | - Carmine Vecchione
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
- Department of Angio-Cardio-Neurology, Vascular Physiopathology Unit, IRCCS Neuromed, 86077 Pozzilli, Isernia, Italy
| |
Collapse
|
8
|
Sillen M, Declerck PJ. Targeting PAI-1 in Cardiovascular Disease: Structural Insights Into PAI-1 Functionality and Inhibition. Front Cardiovasc Med 2020; 7:622473. [PMID: 33415130 PMCID: PMC7782431 DOI: 10.3389/fcvm.2020.622473] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/03/2020] [Indexed: 01/31/2023] Open
Abstract
Plasminogen activator inhibitor-1 (PAI-1), a member of the serine protease inhibitor (serpin) superfamily with antiprotease activity, is the main physiological inhibitor of tissue-type (tPA) and urokinase-type (uPA) plasminogen activators (PAs). Apart from being crucially involved in fibrinolysis and wound healing, PAI-1 plays a pivotal role in various acute and chronic pathophysiological processes, including cardiovascular disease, tissue fibrosis, cancer, and age-related diseases. In the prospect of treating the broad range of PAI-1-related pathologies, many efforts have been devoted to developing PAI-1 inhibitors. The use of these inhibitors, including low molecular weight molecules, peptides, antibodies, and antibody fragments, in various animal disease models has provided ample evidence of their beneficial effect in vivo and moved forward some of these inhibitors in clinical trials. However, none of these inhibitors is currently approved for therapeutic use in humans, mainly due to selectivity and toxicity issues. Furthermore, the conformational plasticity of PAI-1, which is unique among serpins, poses a real challenge in the identification and development of PAI-1 inhibitors. This review will provide an overview of the structural insights into PAI-1 functionality and modulation thereof and will highlight diverse approaches to inhibit PAI-1 activity.
Collapse
Affiliation(s)
| | - Paul J. Declerck
- Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| |
Collapse
|
9
|
Urano T, Suzuki Y, Iwaki T, Sano H, Honkura N, Castellino FJ. Recognition of Plasminogen Activator Inhibitor Type 1 as the Primary Regulator of Fibrinolysis. Curr Drug Targets 2020; 20:1695-1701. [PMID: 31309890 DOI: 10.2174/1389450120666190715102510] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/17/2019] [Accepted: 06/24/2019] [Indexed: 01/12/2023]
Abstract
The fibrinolytic system consists of a balance between rates of plasminogen activation and fibrin degradation, both of which are finely regulated by spatio-temporal mechanisms. Three distinct inhibitors of the fibrinolytic system that differently regulate these two steps are plasminogen activator inhibitor type-1 (PAI-1), α2-antiplasmin, and thrombin activatable fibrinolysis inhibitor (TAFI). In this review, we focus on the mechanisms by which PAI-1 governs total fibrinolytic activity to provide its essential role in many hemostatic disorders, including fibrinolytic shutdown after trauma. PAI-1 is a member of the serine protease inhibitor (SERPIN) superfamily and inhibits the protease activities of plasminogen activators (PAs) by forming complexes with PAs, thereby regulating fibrinolysis. The major PA in the vasculature is tissue-type PA (tPA) which is secreted from vascular endothelial cells (VECs) as an active enzyme and is retained on the surface of VECs. PAI-1, existing in molar excess to tPA in plasma, regulates the amount of free active tPA in plasma and on the surface of VECs by forming a tPA-PAI-1 complex. Thus, high plasma levels of PAI-1 are directly related to attenuated fibrinolysis and increased risk for thrombosis. Since plasma PAI-1 levels are highly elevated under a variety of pathological conditions, including infection and inflammation, the fibrinolytic potential in plasma and on VECs is readily suppressed to induce fibrinolytic shutdown. A congenital deficiency of PAI-1 in humans, in turn, leads to life-threatening bleeding. These considerations support the contention that PAI-1 is the primary regulator of the initial step of fibrinolysis and governs total fibrinolytic activity.
Collapse
Affiliation(s)
- Tetsumei Urano
- Department of Medical Physiology, Hamamatsu University School of Medicine, 1-20-1, Handa-yama, Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Yuko Suzuki
- Department of Medical Physiology, Hamamatsu University School of Medicine, 1-20-1, Handa-yama, Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Takayuki Iwaki
- Department of Pharmacology, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Hideto Sano
- Department of Medical Physiology, Hamamatsu University School of Medicine, 1-20-1, Handa-yama, Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Naoki Honkura
- Department of Medical Physiology, Hamamatsu University School of Medicine, 1-20-1, Handa-yama, Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Francis J Castellino
- W.M. Keck Center for Transgene Research, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana, USA
| |
Collapse
|
10
|
Prabhudesai A, Sharma R, Shetty S, Phadnis A, Kulkarni B. Congenital PAI-1 deficiency results in psoas hematoma in an Indian patient. Thromb Res 2020; 190:35-38. [PMID: 32278876 DOI: 10.1016/j.thromres.2020.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/07/2020] [Accepted: 04/02/2020] [Indexed: 11/16/2022]
Affiliation(s)
- Aniket Prabhudesai
- ICMR-National Institute of Immunohaematology, Department of Thrombosis and Haemostasis, KEM Hospital, Parel, Mumbai 400012, India
| | - Ratna Sharma
- Jupiter Hospital, Eastern Express Highway, Service Rd, Thane 400601, India
| | - Shrimati Shetty
- ICMR-National Institute of Immunohaematology, Department of Thrombosis and Haemostasis, KEM Hospital, Parel, Mumbai 400012, India
| | - Ashish Phadnis
- Jupiter Hospital, Eastern Express Highway, Service Rd, Thane 400601, India
| | - Bipin Kulkarni
- ICMR-National Institute of Immunohaematology, Department of Thrombosis and Haemostasis, KEM Hospital, Parel, Mumbai 400012, India.
| |
Collapse
|
11
|
Urano T, Suzuki Y. Assessing plasminogen activation potential with global fibrinolytic assays. Res Pract Thromb Haemost 2020; 4:13-15. [PMID: 31989079 PMCID: PMC6971321 DOI: 10.1002/rth2.12293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/03/2019] [Accepted: 11/07/2019] [Indexed: 11/07/2022] Open
Affiliation(s)
- Tetsumei Urano
- Hamamatsu University School of Medicine‐Medical PhysiologyHamamatsuShizuokaJapan
| | - Yuko Suzuki
- Hamamatsu University School of Medicine‐Medical PhysiologyHamamatsuShizuokaJapan
| |
Collapse
|
12
|
Pavlov M, Ćelap I. Plasminogen activator inhibitor 1 in acute coronary syndromes. Clin Chim Acta 2019; 491:52-58. [PMID: 30659821 DOI: 10.1016/j.cca.2019.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 11/24/2022]
Abstract
Plasminogen activator inhibitor 1 (PAI-1) is the main regulator of endogenous fibrinolysis, overriding the impact of other constituents of fibrinolysis. In plasma, it can be found in three forms: active, latent and inactive. There are numerous commercially available tests, analysing the activity of PAI-1 or the antigen level, with variable correlations between the two. PAI-1 has been extensively studied regarding incidence and outcomes of acute coronary syndromes, and showed positive association with both in numerous studies. Higher PAI-1 has been associated with worse short- and long-term outcomes. Studies are more consistent in the primary percutaneous coronary intervention era. Higher rise of PAI-1 within the first 24 h of acute myocardial infarction has been linked to some of its high-risk features. The circadian pattern of PAI-1 kinetics has been previously described, and the mechanisms behind this phenomenon and its impact on the incidence of acute coronary syndromes are well known. Further investigations are needed to test the safety and efficacy of PAI-1 as a pharmacological target in cardiovascular diseases.
Collapse
Affiliation(s)
- Marin Pavlov
- Department of Cardiology, Sestre milosrdnice University Hospital Centre, Vinogradska cesta 29, 10000 Zagreb, Croatia.
| | - Ivana Ćelap
- Department of Clinical Chemistry, Sestre milosrdnice University Hospital Centre, Vinogradska cesta 29, 10000 Zagreb, Croatia
| |
Collapse
|
13
|
Saes JL, Schols SEM, van Heerde WL, Nijziel MR. Hemorrhagic disorders of fibrinolysis: a clinical review. J Thromb Haemost 2018; 16:S1538-7836(22)02207-3. [PMID: 29847021 DOI: 10.1111/jth.14160] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Indexed: 12/28/2022]
Abstract
Hyperfibrinolytic bleeding can be caused by a deficiency of one of the inhibitors of fibrinolysis (plasminogen activator inhibitor type 1 [PAI-1] or α2-antiplasmin [α2-AP]), or an excess of one of the activators of fibrinolysis: tissue-type plasminogen activator or urokinase-type plasminogen activator. This review focuses on the clinical implications of these disorders. The bleeding phenotype of fibrinolytic disorders is characterized by delayed bleeding after trauma, surgery and dental procedures. Bleeding in areas of high fibrinolytic activity is also common, such as menorrhagia and epistaxis. Patients with α2-AP deficiency present with the most severe bleeding episodes. Recently, it was discovered that hyperfibrinolytic disorders are associated with a high rate of obstetric complications such as miscarriage and preterm birth, especially in PAI-1 deficient patients. Hyperfibrinolytic disorders are probably underdiagnosed because of lack of knowledge and lack of accurate diagnostic tests. A substantial part of the large group of patients diagnosed as 'bleeding of unknown origin' could actually have a hyperfibrinolytic disorder. In the case of a high index of suspicion (i.e. because of a positive family history, recurrent bleeding or uncommon type of bleeding such as an intramedullary hematoma), further testing should not be withheld because of normal results of standard hemostatic screening assays. Timely diagnosis is important because these disorders can generally be treated well with antifibrinolytic agents.
Collapse
Affiliation(s)
- J L Saes
- Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
- Haemophilia Treatment Center, Nijmegen-Eindhoven-Maastricht, the Netherlands
| | - S E M Schols
- Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
- Haemophilia Treatment Center, Nijmegen-Eindhoven-Maastricht, the Netherlands
| | - W L van Heerde
- Haemophilia Treatment Center, Nijmegen-Eindhoven-Maastricht, the Netherlands
| | - M R Nijziel
- Department of Hematology, Catharina Hospital, Eindhoven, the Netherlands
| |
Collapse
|
14
|
Urano T, Castellino FJ, Suzuki Y. Regulation of plasminogen activation on cell surfaces and fibrin. J Thromb Haemost 2018; 16:S1538-7836(22)02204-8. [PMID: 29779246 PMCID: PMC6099326 DOI: 10.1111/jth.14157] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 01/27/2023]
Abstract
The fibrinolytic system dissolves fibrin and maintains vascular patency. Recent advances in imaging analyses allowed visualization of the spatiotemporal regulatory mechanism of fibrinolysis, as well as its regulation by other plasma hemostasis cofactors. Vascular endothelial cells (VECs) retain tissue-type plasminogen activator (tPA) after secretion and maintain high plasminogen (plg) activation potential on their surfaces. As in plasma, the serpin, plasminogen activator inhibitor type 1 (PAI-1), regulates fibrinolytic potential via inhibition of the VEC surface-bound plg activator, tPA. Once fibrin is formed, plg activation by tPA is initiated and effectively amplified on the surface of fibrin, and fibrin is rapidly degraded. The specific binding of plg and tPA to lytic edges of partly degraded fibrin via newly generated C-terminal lysine residues, which amplifies fibrin digestion, is a central aspect of this pathophysiological mechanism. Thrombomodulin (TM) plays a role in the attenuation of plg binding on fibrin and the associated fibrinolysis, which is reversed by a carboxypeptidase B inhibitor. This suggests that the plasma procarboxypeptidase B, thrombin-activatable fibrinolysis inhibitor (TAFI), which is activated by thrombin bound to TM on VECs, is a critical aspect of the regulation of plg activation on VECs and subsequent fibrinolysis. Platelets also contain PAI-1, TAFI, TM, and the fibrin cross-linking enzyme, factor (F) XIIIa, and either secrete or expose these agents upon activation in order to regulate fibrinolysis. In this review, the native machinery of plg activation and fibrinolysis, as well as their spatiotemporal regulatory mechanisms, as revealed by imaging analyses, are discussed.
Collapse
Affiliation(s)
- T. Urano
- Department of Medical PhysiologyHamamatsu University School of MedicineHamamatsuJapan
| | - F. J. Castellino
- W.M. Keck Center for Transgene ResearchUniversity of Notre DameUniversity of Notre DameNotre DameINUSA
| | - Y. Suzuki
- Department of Medical PhysiologyHamamatsu University School of MedicineHamamatsuJapan
| |
Collapse
|