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Biswas A, Thomas A, Bevans CG, Ivaskevicius V, Oldenburg J. In vitro secretion deficits are common among human coagulation factor XIII subunit B missense mutants: correlations with patient phenotypes and molecular models. Hum Mutat 2013; 34:1490-500. [PMID: 23913518 DOI: 10.1002/humu.22391] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 07/18/2013] [Indexed: 11/09/2022]
Abstract
Coagulation factor XIII (FXIII) proenzyme circulates in plasma as a heterotetramer composed of two each of A and B subunits. Upon activation, the B subunits dissociate from the A subunit dimer, which gains transglutaminase activity to cross-link preformed fibrin clots increasing mechanical strength and resistance to degradation. The B subunits are thought to possess a carrier/protective function before FXIII activation. Mutations in either A or B subunits are associated with pathological patient phenotypes characterized by mild to severe bleeding. In vitro expression of FXIII B subunit (FXIIIB) missense variants in HEK293T cells revealed impaired secretion for all seven variants studied. To investigate the likely molecular environments of the missense residues, we created molecular models of individual FXIIIB Sushi domains using phylogenetically similar complement factor H Sushi domain structural templates. Assessment of the local molecular environments for the models suggested surface or buried positions for each mutant residue and possible pathological mechanisms. The in vitro expression system and in silico analytical methods and models we developed can be used to further investigate the molecular basis of FXIIIB mutation pathologies.
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Affiliation(s)
- Arijit Biswas
- Institute of Experimental Haematology and Transfusion Medicine, University Clinic Bonn, Bonn, Germany
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302
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Kuramoto K, Yamasaki R, Shimizu Y, Tatsukawa H, Hitomi K. Phage-displayed peptide library screening for preferred human substrate peptide sequences for transglutaminase 7. Arch Biochem Biophys 2013; 537:138-43. [DOI: 10.1016/j.abb.2013.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 07/05/2013] [Accepted: 07/08/2013] [Indexed: 01/25/2023]
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303
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Innovative technique for the direct determination of proteins in calcified aortic valves. Anal Bioanal Chem 2013; 405:8781-7. [PMID: 23978938 DOI: 10.1007/s00216-013-7306-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 08/07/2013] [Accepted: 08/13/2013] [Indexed: 10/26/2022]
Abstract
Aortal valve mineralization very frequently causes a genesis of aortic stenosis, which is the most often surgically treated heart disease. Hydroxyapatite deposits have been identified as one of the causes leading to the loss of elasticity of the aortic valves. It is known that phosphates/calcium is accumulated in valve tissues during mineralization, but the mechanism of this process remains unclear. The work is focused mainly on the study of protein composition of mineralized aortic valves by nano-liquid chromatography electrospray ionization in a quadrupole orthogonal acceleration time-of-flight mass spectrometry. New methodological approach based on direct enzymatic digestion of proteins contained in hydroxyapatite deposits was developed for the study of pathological processes connected with osteogenesis. Our objectives were to simplify the traditional analytical protocols of sample preparation and to analyze the organic components of the explanted aortic valves for significant degenerative aortic stenosis. The study of aortic valve mineralization on the molecular level should contribute to understanding this process, which should consequently lead to effective prevention as well as to new ways of treatment of this grave disease.
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304
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Nugent D. Corifact™/Fibrogammin® P in the prophylactic treatment of hereditary factor XIII deficiency: results of a prospective, multicenter, open-label study. Thromb Res 2013; 130 Suppl 2:S12-4. [PMID: 23439001 DOI: 10.1016/s0049-3848(13)70005-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Factor XIII (FXIII) deficiency is an extremely rare congenital condition that is associated with a high risk of potentially life-threatening intracranial hemorrhage, poor wound healing, spontaneous abortion, and a life-long tendency towards spontaneous bleeding and severe bleeding after trauma or surgery. Routine prophylaxis with FXIII concentrate is recommended in all individuals with FXIII levels <1 IU/dL from the time of diagnosis, and in some severely affected patients with FXIII levels of 1-4 IU/dL. Fibrogammin® P is a highly purified, pasteurized, plasma-derived concentrate that has been available in Europe and other countries since 1993 and has recently been approved as Corifact™ in the USA. To support the US registration of Corifact™, a 52-week, prospective, multicenter, open-label study was conducted in 41 patients (mean age 19 years; range <1-42 years) with congenital FXIII deficiency. Corifact™/Fibrogammin® P was administered intravenously at an initial dose of 40 IU/kg every 4 weeks, with dosing adjusted to maintain a trough FXIII activity level of 5-20%. No spontaneous bleeding episodes requiring FXIII treatment were reported during the study (primary endpoint). Preoperative use of Corifact™/Fibrogammin® P successfully prevented postoperative bleeding in two surgeries. Corifact™/Fibrogammin® P was well tolerated during a total exposure of ≈ 455 subject-months. No patient withdrew from treatment, and there were no reports of virus transmission or thromboembolism-related events. This study adds to the wealth of data gained from clinical trials and almost 20 years of clinical use confirming that Corifact™/Fibrogammin® P is an effective and well-tolerated prophylactic treatment for congenital FXIII deficiency.
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Affiliation(s)
- Diane Nugent
- Department of Hematology, Children's Hospital of Orange County, Orange, CA 92868, USA.
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305
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Abstract
In this issue of Blood, Smith and colleagues report on the functional role of the interaction between these 2 proteins by studying the involved binding sites responsible for clot stabilization.(1)
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306
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Soendergaard C, Kvist PH, Seidelin JB, Nielsen OH. Tissue-regenerating functions of coagulation factor XIII. J Thromb Haemost 2013; 11:806-16. [PMID: 23406195 DOI: 10.1111/jth.12169] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 02/04/2013] [Indexed: 12/13/2022]
Abstract
The protransglutaminase factor XIII (FXIII) has recently attracted attention within the field of tissue regeneration, as it has been found that FXIII significantly influences wound healing by exerting a multitude of functions. It supports hemostasis by enhancing platelet adhesion to damaged endothelium, and by its cross-linking activity it stabilizes the formed fibrin clot. Furthermore, FXIII limits bacterial dissemination from the wound and incorporates macromolecules of importance for cellular infiltration, supporting cell migration and survival. FXIII-mediated complex formation of the vascular endothelial growth factor receptor 2 and αV β3 integrin is important for angiogenesis, supporting the formation of granulation tissue. Chronic inflammatory conditions involving bleeding and activation of the coagulation cascade have been shown to lead to reduced FXIII levels in plasma. Of particular importance for this review is the fact that patients suffering from inflammatory bowel disease (IBD) have reduced FXIII antigen levels and activity. Furthermore, these patients show impaired mucosal healing, which supports the inflammatory state of the disease. This review summarizes the role of FXIII in the healing of wounds, and briefly summarizes the previous use of FXIII in clinical settings. Moreover, it addresses the potential role for FXIII as a therapeutic agent in the healing of persistent wounds during chronic conditions, with an emphasis on IBD.
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Affiliation(s)
- C Soendergaard
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark.
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307
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Majmudar MD, Keliher EJ, Heidt T, Leuschner F, Truelove J, Sena BF, Gorbatov R, Iwamoto Y, Dutta P, Wojtkiewicz G, Courties G, Sebas M, Borodovsky A, Fitzgerald K, Nolte MW, Dickneite G, Chen JW, Anderson DG, Swirski FK, Weissleder R, Nahrendorf M. Monocyte-directed RNAi targeting CCR2 improves infarct healing in atherosclerosis-prone mice. Circulation 2013; 127:2038-46. [PMID: 23616627 DOI: 10.1161/circulationaha.112.000116] [Citation(s) in RCA: 216] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Exaggerated and prolonged inflammation after myocardial infarction (MI) accelerates left ventricular remodeling. Inflammatory pathways may present a therapeutic target to prevent post-MI heart failure. However, the appropriate magnitude and timing of interventions are largely unknown, in part because noninvasive monitoring tools are lacking. Here, we used nanoparticle-facilitated silencing of CCR2, the chemokine receptor that governs inflammatory Ly-6C(high) monocyte subset traffic, to reduce infarct inflammation in apolipoprotein E-deficient (apoE(-/-)) mice after MI. We used dual-target positron emission tomography/magnetic resonance imaging of transglutaminase factor XIII (FXIII) and myeloperoxidase (MPO) activity to monitor how monocyte subset-targeted RNAi altered infarct inflammation and healing. METHODS AND RESULTS Flow cytometry, gene expression analysis, and histology revealed reduced monocyte numbers and enhanced resolution of inflammation in infarcted hearts of apoE(-/-) mice that were treated with nanoparticle-encapsulated siRNA. To follow extracellular matrix cross-linking noninvasively, we developed a fluorine-18-labeled positron emission tomography agent ((18)F-FXIII). Recruitment of MPO-rich inflammatory leukocytes was imaged with a molecular magnetic resonance imaging sensor of MPO activity (MPO-Gd). Positron emission tomography/magnetic resonance imaging detected anti-inflammatory effects of intravenous nanoparticle-facilitated siRNA therapy (75% decrease of MPO-Gd signal; P<0.05), whereas (18)F-FXIII positron emission tomography reflected unimpeded matrix cross-linking in the infarct. Silencing of CCR2 during the first week after MI improved ejection fraction on day 21 after MI from 29% to 35% (P<0.05). CONCLUSION CCR2-targeted RNAi reduced recruitment of Ly-6C(high) monocytes, attenuated infarct inflammation, and curbed post-MI left ventricular remodeling.
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Affiliation(s)
- Maulik D Majmudar
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114, USA.
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308
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Dodt J, Volkers P, Seitz R. Factor XIIIa generation assay: a tool for studying factor XIII function in plasma. Anal Biochem 2013; 439:145-51. [PMID: 23611748 DOI: 10.1016/j.ab.2013.04.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 04/05/2013] [Accepted: 04/13/2013] [Indexed: 11/16/2022]
Abstract
Triggering the extrinsic coagulation pathway in plasma and using a fluorogenic factor XIIIa (FXIIIa) substrate for continuously monitoring FXIIIa activity, an FXIIIa generation curve is obtained. The parameters area under the curve (AUC), time to peak (TTP), and concentration at peak (CP) were calculated. In dilutions of normal plasma in FXIII-deficient plasma, AUC and CP showed linear dose-response relationships, whereas TTP increased from 9.9 min for 25% FXIII to 11.6 min for 100% FXIII. Three FXIII-A preparations (rFXIII, rFXIII(V34L), and cellular FXIII [cFXIII]) showed a linear dose response for AUC and CP. The TTP increased slightly for rFXIII from 13.5 to 15.0 min, but surprisingly for cFXIII TTP increased concentration dependently from 13.5 to 28.7 min. Adding 5 μg/ml FXIII-B at a concentration of 1U of FXIII-A increased the AUC for rFXIII(V34L) and cFXIII by approximately 20% and accelerated TTP from 27.3 to 20.8 min for cFVIII, indicating a supportive function of FXIII-B in orientating cFXIII-A for thrombin cleavage. A commercial assay quantifying FXIII after complete activation in a restricted time window did not reveal differences in the cFXIII preparation with or without FXIII-B. The FXIIIa generation assay provides additional information about activation and function of FXIII. This advantage was underlined in experiments with an irreversible FXIIIa inhibitor.
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309
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The effect of FXIII-A Val34Leu genotype on the risk of peripheral arterial disease. Blood Coagul Fibrinolysis 2013; 24:351-2. [DOI: 10.1097/mbc.0b013e3283568bc9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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310
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Takabayashi T, Kato A, Peters AT, Hulse KE, Suh LA, Carter R, Norton J, Grammer LC, Tan BK, Chandra RK, Conley DB, Kern RC, Fujieda S, Schleimer RP. Increased expression of factor XIII-A in patients with chronic rhinosinusitis with nasal polyps. J Allergy Clin Immunol 2013; 132:584-592.e4. [PMID: 23541322 DOI: 10.1016/j.jaci.2013.02.003] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 01/31/2013] [Accepted: 02/07/2013] [Indexed: 01/09/2023]
Abstract
BACKGROUND Profound edema or formation of a pseudocyst containing plasma proteins is a prominent characteristic of nasal polyps (NP). However, the mechanisms underlying NP retention of plasma proteins in the submucosa remain unclear. Recently, we reported that impairment of fibrinolysis causes excessive fibrin deposition in NP and this might be involved in the retention of plasma proteins. Although the coagulation cascade plays a critical role in fibrin clot formation at extravascular sites, the expression and role of coagulation factors in NP remain unclear. OBJECTIVE The objective of this study was to investigate the expression of coagulation factors in patients with chronic rhinosinusitis (CRS). METHODS Sinonasal tissues were collected from patients with CRS and control subjects. We assayed mRNA for factor XIII-A (FXIII-A) by using real-time PCR and measured FXIII-A protein by means of ELISA, immunohistochemistry, and immunofluorescence. RESULTS FXIII-A mRNA levels were significantly increased in NP tissue from patients with CRS with NP (P < .001) compared with uncinate tissue from patients with CRS or control subjects. Similarly, FXIII-A protein levels were increased in NP. Immunofluorescence analysis revealed that FXIII-A expression in inflammatory cells and FXIII-A(+) cell numbers were significantly increased in NP. Most FXIII-A staining was observed within CD68(+)/CD163(+) M2 macrophages in NP. Levels of FXIII-A correlated with markers of M2 macrophages, suggesting that M2 macrophages are major FXIIIA-producing cells in NP. CONCLUSION Overproduction of FXIII-A by M2 macrophages might contribute to the excessive fibrin deposition in the submucosa of NP, which might contribute to the tissue remodeling and pathogenesis of CRS with NP.
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Affiliation(s)
- Tetsuji Takabayashi
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill; Division of Otorhinolaryngology Head and Neck Surgery, Department of Sensory and Locomotor Medicine, University of Fukui, Fukui, Japan
| | - Atsushi Kato
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Anju T Peters
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Kathryn E Hulse
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Lydia A Suh
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Roderick Carter
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - James Norton
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Leslie C Grammer
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Bruce K Tan
- Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Rakesh K Chandra
- Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - David B Conley
- Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Robert C Kern
- Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Shigeharu Fujieda
- Division of Otorhinolaryngology Head and Neck Surgery, Department of Sensory and Locomotor Medicine, University of Fukui, Fukui, Japan
| | - Robert P Schleimer
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill; Department of Otolaryngology, Northwestern University Feinberg School of Medicine, Chicago, Ill.
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311
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Heil A, Weber J, Büchold C, Pasternack R, Hils M. Differences in the inhibition of coagulation factor XIII-A from animal species revealed by Michael Acceptor- and thioimidazol based blockers. Thromb Res 2013; 131:e214-22. [PMID: 23498170 DOI: 10.1016/j.thromres.2013.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 01/28/2013] [Accepted: 02/11/2013] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The A-subunit of blood coagulation factor XIII is a pro-transglutaminase, which cross-links α- and γ-fibrin-chains in its activated form. Selective inhibitors against FXIII-A may be desirable drugs to prevent the development of thromboses. Animal models are generally used for proof of principle and for toxicological studies in drug development. The aim of the study was to investigate the specificity of a set of FXIII-A-blockers against FXIII-A from different species, i.e. human, dog, mouse, rat and pig. Thus the usefulness of different animal species for FXIII-A-blocker drug development should be evaluated. MATERIALS AND METHODS FXIII-A proteins were recombinantly produced in insect cells and purified to homogeneity. They were characterized by SDS- and native PAGE, a transamidase assay and isopeptidase assay. The inhibition second-order rate constants of different irreversible inhibitors were determined using the isopeptidase assay. RESULTS All FXIII-A species were able to assemble with recombinant human FXIII-B into a heterotetrameric complex. Kinetic parameters of FXIII-A species were determined. Second-order rate constants for FXIII-A inhibition by two irreversible inhibitors were determined and differed considerably. FXIII-A species of dog, mouse and rat were inhibited in a manner similar to human FXIII-A. Pig FXIII-A however was resistant to a previously described non-peptidic inhibitor. Furthermore, the results showed considerably better inhibition with the novel peptide-based inhibitor compared to the non-peptidic compound. CONCLUSIONS Our data shows that biochemical interspecies comparison studies are a prerequisite for animal studies. Peptide-derived inhibitors carrying a Michael Acceptor Pharmacophore (MAP) are a promising new class of FXIII-A-inhibitors.
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Affiliation(s)
- Andreas Heil
- Zedira GmbH, Roesslerstrasse 83, 64293 Darmstadt, Germany
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312
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Tanaka KA, Kor DJ. Emerging haemostatic agents and patient blood management. Best Pract Res Clin Anaesthesiol 2013; 27:141-60. [DOI: 10.1016/j.bpa.2013.02.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 02/20/2013] [Indexed: 12/20/2022]
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313
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Fukui M, Kuramoto K, Yamasaki R, Shimizu Y, Itoh M, Kawamoto T, Hitomi K. Identification of a highly reactive substrate peptide for transglutaminase 6 and its use in detecting transglutaminase activity in the skin epidermis. FEBS J 2013; 280:1420-9. [PMID: 23331848 DOI: 10.1111/febs.12133] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/19/2012] [Accepted: 01/11/2013] [Indexed: 11/30/2022]
Abstract
Mammalian transglutaminases (TGs) are a family of enzymes that catalyze the formation of covalent crosslinks between glutamine and lysine residues in proteins. These catalytic reactions play roles in several essential biological processes, including blood coagulation, skin formation, and stabilization of the extracellular matrix. Among the members of this family, factor XIII and TGs 1-5 have been characterized well, but very little is known about the novel members TG6 and TG7. Recently, however, autoantibodies against TG6 were found in a patient with gluten ataxia, a disease caused by enzymatically modified gluten-derived peptides in neuronal cells. To characterize the possible physiological functions of TG6, in this study we screened a phage-displayed random peptide library to find highly reactive glutamine donor substrate peptides. From several candidate peptides, one sequence, designated Y25, appeared to have the highest reactivity. The Y25 sequence also has apparent isozyme specificity when evaluated by incorporation of the labeled glutamine acceptor substrate as a fusion protein with glutathione-S-transferase. Also, the sequence retained high reactivity as well as the isozyme specificity in the peptide form. Analyses with the biotin-labeled and fluorescence-labeled peptides showed TG6 to be an active enzyme and react to specific substrates in the skin, which is consistent with the results of the expression pattern of its transcripts.
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Affiliation(s)
- Mina Fukui
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan
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314
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Abstract
Coagulation factor (F)XIII is best known for its role in fibrin stabilization and cross-linking of antifibrinolytic proteins to the fibrin clot. From patients with congenital FXIII deficiency, it is known that FXIII also has important functions in wound healing and maintaining pregnancy. Over the last decade more and more research groups with different backgrounds have studied FXIII and have unveiled putative novel functions for FXIII. FXIII, with its unique role as a transglutaminase among the other serine protease coagulation factors, is now recognized as a multifunctional protein involved in regulatory mechanisms and construction and repair processes beyond hemostasis with possible implications in many areas of medicine. The aim of this review was to give an overview of exciting novel findings and to highlight the remarkable diversity of functions attributed to FXIII. Of course, more research into the underlying mechanisms and (patho-)physiological relevance of the many described functions of FXIII is needed. It will be exciting to observe future developments in this area and to see if and how these interesting findings may be translated into clinical practice in the future.
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Affiliation(s)
- V Schroeder
- University Clinic of Hematology and Central Hematology Laboratory, University Hospital and University of Bern, Bern, Switzerland.
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315
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Zhang WG, Souri M, Ichinose A. Proteosomal degradation of naturally recurring R260C missense and exon-IV deletion mutants of factor XIII A-subunit expressed in mammalian cells. Haemophilia 2013; 19:415-9. [PMID: 23279035 DOI: 10.1111/hae.12072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2012] [Indexed: 11/27/2022]
Abstract
Congenital factor XIII (FXIII) deficiency is a severe bleeding disorder. We previously identified an Arg260Cys missense mutation and an exon-IV deletion in patients' A subunit genes, F13A. To characterize the molecular/cellular basis of this disease, we expressed a wild type and these mutant A subunits in baby hamster kidney (BHK) cells. The mutant proteins were expressed less efficiently than the wild type. These mutants gradually decreased inside BHK cells, whereas the wild type remained largely unchanged. The decline/decrease in these mutants was completely blocked/restored by a potent proteasome inhibitor, MG-132. This was consistent with the prediction by molecular modelling that the mutant molecules would lose the native structure of wild-type molecule, leading to their instability and degeneration and ultimately to degradation. These mutants might have significantly altered conformations, resulting in the rapid degradation by the proteasome inside the synthesizing cells, and ultimately leading to FXIII deficiency.
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Affiliation(s)
- W G Zhang
- Department of Molecular Patho-Biochemistry and Patho-Biology, Yamagata University School of Medicine, Yamagata, Japan
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316
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Aggressive fatal case of autoimmune hemorrhaphilia resulting from anti-Factor XIII antibodies. Blood Coagul Fibrinolysis 2013. [DOI: 10.1097/mbc.0b013e328358e8e7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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317
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Handschel J, Burghardt S, Naujoks C, Kübler NR, Giers G. Parameters predicting complications in flap surgery. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 115:589-94. [PMID: 23246227 DOI: 10.1016/j.oooo.2012.09.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 08/21/2012] [Accepted: 09/09/2012] [Indexed: 12/01/2022]
Abstract
OBJECTIVES The aim of this prospective study was to determine laboratory parameters predicting complications and/or failure in flap surgery. STUDY DESIGN Fifty-seven patients undergoing reconstructive surgery with cutaneous free and pedicled flaps were included. Blood samples were taken 2 days before surgery and 1, 3, 5, 7, and 14 days after. Parameters associated with thrombophilia, bleeding disorders, and wound healing were determined. RESULTS In 45 (77%) of 57 patients no complications occurred. Bleeding (9%) and venous thrombosis of the flaps (9%) led in 18% of the cases to surgical revisions. Activated protein C resistance showed a significant (P < .05) cluster in cases with venous thrombosis, whereas it was absent in all other cases. Fibrinogen, factor VIII:C, von Willebrand factor (vWF) activity, and VWF antigen were significantly (P < .05) higher in patients with venous thrombosis compared with all other patients. CONCLUSIONS Laboratory parameters of thrombosis and bleeding appear to be associated with complications in flap surgery.
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Affiliation(s)
- Jörg Handschel
- Department for Cranio- and Maxillofacial Surgery, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.
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318
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Küper MA, Schüle R, Mayer P, Königsrainer A, Beckert S. Factor XIII Val34Leu polymorphism is associated with increased factor XIII activation and decreased transcutaneous oxygen readings in patients with diabetic foot ulcers. Diabet Med 2012; 29:1596-9. [PMID: 22578139 DOI: 10.1111/j.1464-5491.2012.03707.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM To investigate the relationship between the factor XIII Val34Leu polymorphism, plasma factor XIII activation and transcutaneous oxygen readings in patients with diabetic foot ulcers. Methods Ninety-two consecutive patients with Type diabetes and active foot ulcers were investigated. Plasma factor XIII activation was assessed by ELISA. Genetic polymorphism was detected using the ABI PRISM® SNaPshotTM Multiplex Kit. Results are expressed as median (minimum-maximum). Differences between groups were calculated by Mann-Whitney U-test or χ(2) -test where appropriate. A P-value < .05 was considered significant. RESULTS e Val34Leu polymorphism was found in 50 subjects (54%) with 42 being heterozygous (Val/Leu) and eight being homozygous (Leu/Leu). The rate of plasma factor XIII activation was increased in patients with Val/Leu or Leu/Leu [Val/Leu or Leu/Leu 152 (55-283) % vs. Val/Val 103 (33-282) %; P < 0.0001]. Transcutaneous oxygen readings were lower in the Val/Leu or Leu/Leu group [Val/Leu or Leu/Leu 16 (0-58) mmHg vs. Val/Val 35 (1-65) mmHg; P = 0.008]. Similarly, plasma factor XIII activation negatively correlated with transcutaneous oxygen readings (r(2) = -0.314; P = 0.014). CONCLUSIONS Val34Leu polymorphism is associated with increased plasma factor XIII activation and seems to be linked with impaired cutaneous microcirculation in patients with diabetic foot ulcers.
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Affiliation(s)
- M A Küper
- Department of General, Visceral and Transplant Surgery, University of Tübingen Hertie Institute for Genetic Research, University of Tübingen, Tübingen, Germany
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319
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Klöck C, Khosla C. Regulation of the activities of the mammalian transglutaminase family of enzymes. Protein Sci 2012; 21:1781-91. [PMID: 23011841 DOI: 10.1002/pro.2162] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 09/12/2012] [Accepted: 09/13/2012] [Indexed: 01/31/2023]
Abstract
Mammalian transglutaminases catalyze post-translational modifications of glutamine residues on proteins and peptides through transamidation or deamidation reactions. Their catalytic mechanism resembles that of cysteine proteases. In virtually every case, their enzymatic activity is modulated by elaborate strategies including controlled gene expression, allostery, covalent modification, and proteolysis. In this review, we focus on our current knowledge of post-translational regulation of transglutaminase activity by physiological as well as synthetic allosteric agents. Our discussion will primarily focus on transglutaminase 2, but will also compare and contrast its regulation with Factor XIIIa as well as transglutaminases 1 and 3. Potential structure-function relationships of known mutations in human transglutaminases are analyzed.
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Affiliation(s)
- Cornelius Klöck
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
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Vívenes M, Castro de Guerra D, Rodríguez-Larralde Á, Arocha-Piñango CL, Guerrero B. Activity and levels of factor XIII in a Venezuelan admixed population: association with rs5985 (Val35Leu) and STR F13A01 polymorphisms. Thromb Res 2012; 130:729-34. [DOI: 10.1016/j.thromres.2012.07.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/19/2012] [Accepted: 07/31/2012] [Indexed: 11/16/2022]
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321
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Lack of evidence for association between factor XIII-A Val34Leu polymorphism and ischemic stroke: A meta-analysis of 8,800 subjects. Thromb Res 2012; 130:654-60. [DOI: 10.1016/j.thromres.2011.11.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 11/04/2011] [Accepted: 11/16/2011] [Indexed: 11/24/2022]
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322
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Lodemann P, Kolbeck H, Held TK, Ivaskevicius V, Oldenburg J, Schweigerer L, Ludwig WD, Peetz D. Acquired deficiency of coagulation factor XIII—possible evidence for a new link between coagulation and infection from a case. Ann Hematol 2012; 92:427-9. [DOI: 10.1007/s00277-012-1582-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 09/16/2012] [Indexed: 10/27/2022]
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323
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Hardes K, Becker GL, Zouhir Hammamy M, Steinmetzer T. Design, synthesis, and characterization of chromogenic substrates of coagulation factor XIIIa. Anal Biochem 2012; 428:73-80. [DOI: 10.1016/j.ab.2012.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 05/18/2012] [Accepted: 05/22/2012] [Indexed: 10/28/2022]
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324
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Levy JH, Greenberg C. Biology of Factor XIII and clinical manifestations of Factor XIII deficiency. Transfusion 2012; 53:1120-31. [DOI: 10.1111/j.1537-2995.2012.03865.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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325
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Antalfi B, Pongrácz E, Csiki Z, Mezei ZA, Shemirani AH. Factor XIII-A subunit Val34Leu polymorphism in fatal hemorrhagic stroke. Int J Lab Hematol 2012; 35:88-91. [DOI: 10.1111/j.1751-553x.2012.01465.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 07/16/2012] [Indexed: 11/30/2022]
Affiliation(s)
- B. Antalfi
- Department of Pathology; Diósgyori Vasgyári Hospital; Miskolc; Hungary
| | - E. Pongrácz
- Department of Neurology; Hetényi Géza Hospital; Szolnok; Hungary
| | - Z. Csiki
- Department of 3rd Internal Medicine; University of Debrecen, Medical and Health Science Center; Debrecen; Hungary
| | - Z. A. Mezei
- Clinical Research Center; University of Debrecen, Medical and Health Science Center; Debrecen; Hungary
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Abstract
Congenital Factor XIII (FXIII) deficiency is a rare autosomal recessive inherited disease leading to severe bleeding diathesis. In this issue of Blood, Inbal and colleagues report on a safe and novel treatment of this rare disorder with recombinant FXIII (rFXIII).1
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BOLTON-MAGGS PHB, FAVALORO EJ, HILLARP A, JENNINGS I, KOHLER HP. Difficulties and pitfalls in the laboratory diagnosis of bleeding disorders. Haemophilia 2012; 18 Suppl 4:66-72. [DOI: 10.1111/j.1365-2516.2012.02830.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sugitani K, Ogai K, Hitomi K, Nakamura-Yonehara K, Shintani T, Noda M, Koriyama Y, Tanii H, Matsukawa T, Kato S. A distinct effect of transient and sustained upregulation of cellular factor XIII in the goldfish retina and optic nerve on optic nerve regeneration. Neurochem Int 2012; 61:423-32. [PMID: 22709671 DOI: 10.1016/j.neuint.2012.06.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 05/31/2012] [Accepted: 06/08/2012] [Indexed: 12/30/2022]
Abstract
Unlike in mammals, fish retinal ganglion cells (RGCs) have a capacity to repair their axons even after optic nerve transection. In our previous study, we isolated a tissue type transglutaminase (TG) from axotomized goldfish retina. The levels of retinal TG (TG(R)) mRNA increased in RGCs 1-6weeks after nerve injury to promote optic nerve regeneration both in vitro and in vivo. In the present study, we screened other types of TG using specific FITC-labeled substrate peptides to elucidate the implications for optic nerve regeneration. This screening showed that the activity of only cellular coagulation factor XIII (cFXIII) was increased in goldfish optic nerves just after nerve injury. We therefore cloned a full-length cDNA clone of FXIII A subunit (FXIII-A) and studied temporal changes of FXIII-A expression in goldfish optic nerve and retina during regeneration. FXIII-A mRNA was initially detected at the crush site of the optic nerve 1h after injury; it was further observed in the optic nerve and achieved sustained long-term expression (1-40days after nerve injury). The cells producing FXIII-A were astrocytes/microglial cells in the optic nerve. By contrast, the expression of FXIII-A mRNA and protein was upregulated in RGCs for a shorter time (3-10days after nerve injury). Overexpression of FXIII-A in RGCs achieved by lipofection induced significant neurite outgrowth from unprimed retina, but not from primed retina with pretreatment of nerve injury. Addition of extracts of optic nerves with injury induced significant neurite outgrowth from primed retina, but not from unprimed retina without pretreatment of nerve injury. The transient increase of cFXIII in RGCs promotes neurite sprouting from injured RGCs, whereas the sustained increase of cFXIII in optic nerves facilitates neurite elongation from regrowing axons.
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Affiliation(s)
- Kayo Sugitani
- Division of Health Sciences, Graduate School of Medicine, Kanazawa University, Kanazawa 920-0942, Japan.
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Koncz Z, Bagoly Z, Haramura G, Mezei ZA, Muszbek L. Thrombomodulin-dependent effect of factor V Leiden mutation on the cross-linking of α2-plasmin inhibitor to fibrin and its consequences on fibrinolysis. Thromb Res 2012; 130:528-34. [PMID: 22704462 DOI: 10.1016/j.thromres.2012.05.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 05/12/2012] [Accepted: 05/19/2012] [Indexed: 10/28/2022]
Abstract
INTRODUCTION It has been shown that thrombomodulin (TM) considerably delays factor XIII (FXIII) activation and this effect is abrogated by Factor V Leiden (FV(Leiden)) mutation. The aim of the study was to explore the effect of TM on the cross-linking of α(2)-plasmin inhibitor (α(2)-PI) to fibrin in plasma samples of different FV genotypes and how this effect is related to the impaired fibrinolysis of FV(Leiden) carriers. METHODS In the plasma samples of fifteen individuals with different FV genotypes and in FV deficient plasma supplemented with wild type FV or FV(Leiden) coagulation was initiated by recombinant human tissue factor and phospholipids with or without recombinant human TM (rhTM). In the recovered clots the extent of α(2)-PI-fibrin cross-linking was evaluated by Western blotting and quantitative densitometry. The effect of rhTM on tissue plasminogen activator (tPA) induced clot lysis was measured by turbidimetric method. RESULTS rhTM significantly delayed the formation of α(2)-PI-fibrin α-chain heterodimers/oligomers in plasma samples containing wild type FV. This effect of rhTM was impaired in the presence of FV(Leiden). rhTM delayed tPA-induced clot lysis and this effect of rhTM was more pronounced in plasma containing FV(Leiden). When TAFIa was inhibited by potato carboxypeptidase inhibitor, rhTM accelerated clot lysis in the presence of wild type FV, which is explained by the delayed α(2)-PI-fibrin cross-linking. This effect of rhTM did not prevail in the presence of FV(Leiden). CONCLUSION FV(Leiden) abrogates the delaying effect of rhTM on α(2)-PI-fibrin cross-linking, which contributes to the impaired fibrinolysis observed in FV(Leiden) carriers.
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Affiliation(s)
- Zsuzsa Koncz
- Clinical Research Center University of Debrecen, Medical and Health Science Center, Debrecen, Hungary
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330
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331
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Pasquier E, De Saint Martin L, Kohler HP, Schroeder V. Factor XIII plasma levels in women with unexplained recurrent pregnancy loss. J Thromb Haemost 2012; 10:723-5. [PMID: 22329719 DOI: 10.1111/j.1538-7836.2012.04657.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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332
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333
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Piercy-Kotb SA, Mousa A, Al-Jallad HF, Myneni VD, Chicatun F, Nazhat SN, Kaartinen MT. Factor XIIIA transglutaminase expression and secretion by osteoblasts is regulated by extracellular matrix collagen and the MAP kinase signaling pathway. J Cell Physiol 2012; 227:2936-46. [DOI: 10.1002/jcp.23040] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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334
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Zhang Y, Fan S, Yao Y, Ding J, Wang Y, Zhao Z, Liao L, Li P, Zang F, Teng GJ. In vivo near-infrared imaging of fibrin deposition in thromboembolic stroke in mice. PLoS One 2012; 7:e30262. [PMID: 22272319 PMCID: PMC3260250 DOI: 10.1371/journal.pone.0030262] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Accepted: 12/12/2011] [Indexed: 12/11/2022] Open
Abstract
Objectives Thrombus and secondary thrombosis plays a key role in stroke. Recent molecular imaging provides in vivo imaging of activated factor XIII (FXIIIa), an important mediator of thrombosis or fibrinolytic resistance. The present study was to investigate the fibrin deposition in a thromboembolic stroke mice model by FXIIIa–targeted near-infrared fluorescence (NIRF) imaging. Materials and Methods The experimental protocol was approved by our institutional animal use committee. Seventy-six C57B/6J mice were subjected to thromboembolic middle cerebral artery occlusion or sham operation. Mice were either intravenously injected with the FXIIIa-targeted probe or control probe. In vivo and ex vivo NIRF imaging were performed thereafter. Probe distribution was assessed with fluorescence microscopy by spectral imaging and quantification system. MR scans were performed to measure lesion volumes in vivo, which were correlated with histology after animal euthanasia. Results In vivo significant higher fluorescence intensity over the ischemia-affected hemisphere, compared to the contralateral side, was detected in mice that received FXIIIa-targeted probe, but not in the controlled mice. Significantly NIRF signals showed time-dependent processes from 8 to 96 hours after injection of FXIIIa-targeted probes. Ex vivo NIRF image showed an intense fluorescence within the ischemic territory only in mice injected with FXIIIa-targeted probe. The fluorescence microscopy demonstrated distribution of FXIIIa-targeted probe in the ischemic region and nearby micro-vessels, and FXIIIa-targeted probe signals showed good overlap with immune-fluorescent fibrin staining images. There was a significant correlation between total targeted signal from in vivo or ex vivo NIRF images and lesion volume. Conclusion Non-invasive detection of fibrin deposition in ischemic mouse brain using NIRF imaging is feasible and this technique may provide an in vivo experimental tool in studying the role of fibrin in stroke.
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Affiliation(s)
- Yi Zhang
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Shufeng Fan
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Yuyu Yao
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Jie Ding
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Yu Wang
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Zhen Zhao
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Lei Liao
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Peicheng Li
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Fengchao Zang
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Gao-Jun Teng
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
- * E-mail:
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335
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Shannon O, Herwald H, Oehmcke S. Modulation of the coagulation system during severe streptococcal disease. Curr Top Microbiol Immunol 2012; 368:189-205. [PMID: 23224709 DOI: 10.1007/82_2012_283] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Haemostasis is maintained by a tightly regulated coagulation system that comprises platelets, procoagulant proteins, and anticoagulant proteins. During the local and systemic response to bacterial infection, the coagulation system becomes activated, and contributes to the pathophysiological response to infection. The significant human pathogen, Streptococcus pyogenes has multiple strategies to modulate coagulation. This can range from systemic activation of the intrinsic and extrinsic pathway of coagulation to local stimulation of fibrinolysis. Such diverse effects on this host system imply a finely tuned host-bacteria interaction. The molecular mechanisms that underlie this modulation of the coagulation system are discussed in this review.
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Affiliation(s)
- Oonagh Shannon
- Division of Infection Medicine, Department of Clinical Sciences, Biomedical Centre, B14, Lund University, Sweden.
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336
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Bagoly Z, Koncz Z, Hársfalvi J, Muszbek L. Factor XIII, clot structure, thrombosis. Thromb Res 2011; 129:382-7. [PMID: 22197181 DOI: 10.1016/j.thromres.2011.11.040] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 11/09/2011] [Accepted: 11/22/2011] [Indexed: 11/30/2022]
Abstract
Blood coagulation factor XIII (FXIII) is a tetrameric protein consisting of two catalytic A (FXIII-A) and two carrier/inhibitory B (FXIII-B) subunits. It is a zymogen, which becomes transformed into an active transglutaminase (FXIIIa) in the final phase of coagulation cascade by thrombin and Ca(2+). FXIII is essential for hemostasis, its deficiency results in severe bleeding diathesis. FXIIIa mechanically stabilizes fibrin by cross-linking its α-, and γ-chains. It also protects newly formed fibrin from fibrinolysis, primarily by cross-linking α(2)-plasmin inhibitor to fibrin. Beside the above prothrombotic effects, it is involved in limiting thrombus growth by down-regulating platelet adhesion to fibrin. Elevated FXIII level seems to be a gender-specific risk factor of both coronary artery disease and peripheral arterial disease, it represents an increased risk only in females. The association of FXIII level with the risk of ischemic stroke and venous thromboembolism was investigated only in a few studies from which no clear conclusion could be drawn. Among the FXIII subunit polymorphisms, concerning their effect on the risk of thrombotic diseases, only FXIII-A p.Val34Leu was investigated extensively. Meta-analyses of reported data suggest that this polymorphism provides a moderate protection against coronary artery disease and venous thromboembolism, but not against ischemic stroke. Gene-gene and gene-environmental interactions might modify its effect. Further studies are required to explore the effect of other FXIII subunit polymorphism on the risk of thrombotic diseases.
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Affiliation(s)
- Zsuzsa Bagoly
- Clinical Research Center University of Debrecen, Medical and Health Science Center, Debrecen, Hungary
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337
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Böhm M, Kühl T, Hardes K, Coch R, Arkona C, Schlott B, Steinmetzer T, Imhof D. Synthesis and functional characterization of tridegin and its analogues: inhibitors and substrates of factor XIIIa. ChemMedChem 2011; 7:326-33. [PMID: 22162181 DOI: 10.1002/cmdc.201100405] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 11/09/2011] [Indexed: 11/07/2022]
Abstract
Tridegin, a 66-mer peptide isolated from the leech Haementeria ghilianii, is a potent inhibitor of the coagulation factor XIIIa. This paper describes the chemical synthesis of tridegin by two different strategies--solid-phase assembly and native chemical ligation--both followed by oxidation in solution phase. Tridegin and truncated analogues were examined for their activity and revealed a particular importance of the C-terminal region of the parent peptide. Based on these studies a minimal sequence required for factor XIIIa inhibition could be identified. Our data revealed that the glutamine residue at position 52 (Q52) of tridegin most likely binds to the active site of factor XIIIa and was therefore suggested to react with the enzyme. The function of the N-terminal region is also discussed, as the isolated C-terminal segment of tridegin lost its inhibitory activity rapidly in the presence of factor XIIIa, whereas this was not the case for the full-length inhibitor.
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Affiliation(s)
- Miriam Böhm
- Pharmaceutical Chemistry I, Institute of Pharmacy, University of Bonn, Brühler Straße 7, 53119 Bonn, Germany
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338
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Kwon MH, Jung SH, Kim YM, Ha KS. Simultaneous Activity Assay of Two Transglutaminase Isozymes, Blood Coagulation Factor XIII and Transglutaminase 2, by Use of Fibrinogen Arrays. Anal Chem 2011; 83:8718-24. [DOI: 10.1021/ac202178g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mi-Hye Kwon
- Department of Molecular and Cellular Biochemistry and Institute of Medical Science, Kangwon National University School of Medicine, Chuncheon, Kangwon-Do 200-701, South Korea
| | - Se-Hui Jung
- Department of Molecular and Cellular Biochemistry and Institute of Medical Science, Kangwon National University School of Medicine, Chuncheon, Kangwon-Do 200-701, South Korea
| | - Young-Myeong Kim
- Department of Molecular and Cellular Biochemistry and Institute of Medical Science, Kangwon National University School of Medicine, Chuncheon, Kangwon-Do 200-701, South Korea
| | - Kwon-Soo Ha
- Department of Molecular and Cellular Biochemistry and Institute of Medical Science, Kangwon National University School of Medicine, Chuncheon, Kangwon-Do 200-701, South Korea
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