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Farrugia BL, Melrose J. The Glycosaminoglycan Side Chains and Modular Core Proteins of Heparan Sulphate Proteoglycans and the Varied Ways They Provide Tissue Protection by Regulating Physiological Processes and Cellular Behaviour. Int J Mol Sci 2023; 24:14101. [PMID: 37762403 PMCID: PMC10531531 DOI: 10.3390/ijms241814101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/03/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
This review examines the roles of HS-proteoglycans (HS-PGs) in general, and, in particular, perlecan and syndecan as representative examples and their interactive ligands, which regulate physiological processes and cellular behavior in health and disease. HS-PGs are essential for the functional properties of tissues both in development and in the extracellular matrix (ECM) remodeling that occurs in response to trauma or disease. HS-PGs interact with a biodiverse range of chemokines, chemokine receptors, protease inhibitors, and growth factors in immune regulation, inflammation, ECM stabilization, and tissue protection. Some cell regulatory proteoglycan receptors are dually modified hybrid HS/CS proteoglycans (betaglycan, CD47). Neurexins provide synaptic stabilization, plasticity, and specificity of interaction, promoting neurotransduction, neurogenesis, and differentiation. Ternary complexes of glypican-1 and Robbo-Slit neuroregulatory proteins direct axonogenesis and neural network formation. Specific neurexin-neuroligin complexes stabilize synaptic interactions and neural activity. Disruption in these interactions leads to neurological deficits in disorders of functional cognitive decline. Interactions with HS-PGs also promote or inhibit tumor development. Thus, HS-PGs have complex and diverse regulatory roles in the physiological processes that regulate cellular behavior and the functional properties of normal and pathological tissues. Specialized HS-PGs, such as the neurexins, pikachurin, and Eyes-shut, provide synaptic stabilization and specificity of neural transduction and also stabilize the axenome primary cilium of phototoreceptors and ribbon synapse interactions with bipolar neurons of retinal neural networks, which are essential in ocular vision. Pikachurin and Eyes-Shut interactions with an α-dystroglycan stabilize the photoreceptor synapse. Novel regulatory roles for HS-PGs controlling cell behavior and tissue function are expected to continue to be uncovered in this fascinating class of proteoglycan.
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Affiliation(s)
- Brooke L. Farrugia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, University of Melbourne, Melbourne, VIC 3010, Australia;
| | - James Melrose
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Raymond Purves Laboratory of Bone and Joint Research, Kolling Institute of Medical Research, Northern Sydney Local Health District, Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
- Sydney Medical School (Northern), University of Sydney at Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
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2
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Islam A, Cockcroft C, Elshazly S, Ahmed J, Joyce K, Mahfuz H, Islam T, Rashid H, Laher I. Coagulopathy of Dengue and COVID-19: Clinical Considerations. Trop Med Infect Dis 2022; 7:tropicalmed7090210. [PMID: 36136621 PMCID: PMC9500638 DOI: 10.3390/tropicalmed7090210] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 12/04/2022] Open
Abstract
Thrombocytopenia and platelet dysfunction commonly occur in both dengue and COVID-19 and are related to clinical outcomes. Coagulation and fibrinolytic pathways are activated during an acute dengue infection, and endothelial dysfunction is observed in severe dengue. On the other hand, COVID-19 is characterised by a high prevalence of thrombotic complications, where bleeding is rare and occurs only in advanced stages of critical illness; here thrombin is the central mediator that activates endothelial cells, and elicits a pro-inflammatory reaction followed by platelet aggregation. Serological cross-reactivity may occur between COVID-19 and dengue infection. An important management aspect of COVID-19-induced immunothrombosis associated with thrombocytopenia is anticoagulation with or without aspirin. In contrast, the use of aspirin, nonsteroidal anti-inflammatory drugs and anticoagulants is contraindicated in dengue. Mild to moderate dengue infections are treated with supportive therapy and paracetamol for fever. Severe infection such as dengue haemorrhagic fever and dengue shock syndrome often require escalation to higher levels of support in a critical care facility. The role of therapeutic platelet transfusion is equivocal and should not be routinely used in patients with dengue with thrombocytopaenia and mild bleeding. The use of prophylactic platelet transfusion in dengue fever has strained financial and healthcare systems in endemic areas, together with risks of transfusion-transmitted infections in low- and middle-income countries. There is a clear research gap in the management of dengue with significant bleeding.
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Affiliation(s)
- Amin Islam
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
- Department of Haematology, Queen Mary University of London, Mile End Road, London E1 3NS, UK
- Correspondence:
| | - Christopher Cockcroft
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
| | - Shereen Elshazly
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
- Adult Haemato-Oncology Unit, Faculty of Medicine, Ainshams University, Cairo 11566, Egypt
| | - Javeed Ahmed
- Department of Microbiology and Virology, Mid & South Essex University Hospital NHS Foundation Trust, Westcliff-on-Sea SS0 0RY, UK
| | - Kevin Joyce
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
| | - Huque Mahfuz
- Department of Haematology and Oncology, Combined Military Hospital, Dhaka 1206, Bangladesh
| | - Tasbirul Islam
- Department of Pulmonology and Critical Care Medicine, Indiana School of Medicine, Lafayette, IN 47907, USA
| | - Harunor Rashid
- National Centre for Immunisation Research and Surveillance, The Children’s Hospital at Westmead, Westmead, NSW 2145, Australia
- Sydney Institute for Infectious Diseases, The University of Sydney, Westmead, NSW 2145, Australia
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology & Therapeutics, Faculty of Medicine, The University of British Colombia, Vancouver, BC V6T 1Z3, Canada
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Role of TF-Triggered Activation of the Coagulation Cascade in the Pathogenesis of Chronic Spontaneous Urticaria. CURRENT TREATMENT OPTIONS IN ALLERGY 2018. [DOI: 10.1007/s40521-018-0183-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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4
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Wang GH, Lu J, Ma KL, Zhang Y, Hu ZB, Chen PP, Lu CC, Zhang XL, Liu BC. The Release of Monocyte-Derived Tissue Factor-Positive Microparticles Contributes to a Hypercoagulable State in Idiopathic Membranous Nephropathy. J Atheroscler Thromb 2018; 26:538-546. [PMID: 30429407 PMCID: PMC6545459 DOI: 10.5551/jat.46284] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aim: Idiopathic membranous nephropathy (IMN) is an immune-mediated inflammatory disease characterized by a high risk of thromboembolic complications. Microparticles (MPs), a type of extracellular vesicles, have procoagulant properties, especially when they display tissue factor (TF). This study aimed to investigate whether circulating TF-positive MPs contributed to the hypercoagulable state in patients with IMN. Methods: Twenty adult IMN patients and fourteen healthy subjects were included in the study. The basic indexes of a routine biochemical examination and coagulative function were determined. The plasma levels of MPs were detected by flow cytometry, and TF activity of MPs was examined using an assay kit. The plasma levels of lipopolysaccharide (LPS) were measured by an enzyme-linked immunosorbent assay. Results: Total circulating MPs were not increased in patients with IMN compared with healthy controls. Circulating CD14+/TF+MPs were significantly increased in IMN patients, but this achieved significance was not observed in CD41+/TF+MPs between the two groups. Interestingly, the circulating TF-positive MPs were increased significantly. Plasma MPs TF assays revealed high procoagulant activity, which was positively associated with the D-dimer level in IMN. In addition, circulating LPS in IMN patients were significantly higher than those in the controls. Furthermore, after two hours' incubation with healthy whole blood, LPS enhanced the release of circulating TF-positive MPs and the TF activity of MPs. Conclusion: Increased circulating LPS may mediate the release of monocyte-derived TF-positive MPs, which further contributes to the hypercoagulable state in IMN patients. These findings provide an additional mechanism by which patients with IMN have a higher risk of thromboembolic complication.
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Affiliation(s)
- Gui Hua Wang
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Jian Lu
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Kun Ling Ma
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Yang Zhang
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Ze Bo Hu
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Pei Pei Chen
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Chen Chen Lu
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Xiao Liang Zhang
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
| | - Bi Cheng Liu
- Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University
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Yanase Y, Takahagi S, Hide M. Chronic spontaneous urticaria and the extrinsic coagulation system. Allergol Int 2018; 67:191-194. [PMID: 28993062 DOI: 10.1016/j.alit.2017.09.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/08/2017] [Indexed: 01/05/2023] Open
Abstract
Chronic spontaneous urticaria (CSU) is a common skin disorder characterized by daily or almost daily recurring skin edema and flare with itch. Recently, the activation of the blood coagulation cascade has been suggested to be involved in CSU, but the trigger of the coagulation cascade remains unclear. In this article, we review recent understanding of the relationship between the pathogenesis of CSU and extrinsic coagulation reactions. In CSU, vascular endothelial cells and eosinophils may play a role as TF-expressing cells for activating the extrinsic coagulation pathway. Moreover, the expression of TF on endothelial cells is synergistically enhanced by the activation of Toll-like receptors and histamine H1 receptors. The activated coagulation factors may induce plasma extravasation followed by degranulation of skin mast cells and edema formation recognized as wheal in CSU. Molecules involved in this cascade could be a target for new and more effective treatments of urticaria.
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Tsimerman G, Roguin A, Bachar A, Melamed E, Brenner B, Aharon A. Involvement of microparticles in diabetic vascular complications. Thromb Haemost 2017; 106:310-21. [DOI: 10.1160/th10-11-0712] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Accepted: 05/16/2011] [Indexed: 11/05/2022]
Abstract
SummaryType 2 diabetes mellitus (T2DM) is associated with increased coagulability and vascular complications. Circulating microparticles (MPs) are involved in thrombosis, inflammation, and angiogenesis. However, the role of MPs in T2DM vascular complications is unclear. We characterised the cell origin and pro-coagulant profiles of MPs obtained from 41 healthy controls and 123 T2DM patients with coronary artery disease, retinopathy and foot ulcers. The effects of MPs on endothelial cell coagulability and tube formation were evaluated. Patients with severe diabetic foot ulcers expressed the highest levels of MPs originated from platelet and endothelial cells and negatively-charged phospholipidbearing MPs. MP coagulability, calculated from MP tissue factor (TF) and TF pathway inhibitor (TFPI) ratio, was low in healthy controls and in diabetic retinopathy patients (<0.7) but high in patients with coronary artery disease and foot ulcers (>1.8, p≥0.002). MPs of all T2DM patients induced a more than two-fold increase in endothelial cell TF (antigen and gene expression) but did not affect TFPI levels. Tube networks were longest and most stable in endothelial cells that were incubated with MPs of healthy controls, whereas no tube formation occurred in MPs of diabetic patients with coronary artery disease. MPs of diabetic retinopathy and diabetic foot ulcer patients induced branched tube networks that were unstable and collapsed over time. This study demonstrates that MP characteristics are related to the specific type of vascular complications and may serve as a bio-marker for the procoagulant state and vascular pathology in patients with T2DM.
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7
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Shaker H, Harrison H, Clarke R, Landberg G, Bundred NJ, Versteeg HH, Kirwan CC. Tissue Factor promotes breast cancer stem cell activity in vitro. Oncotarget 2017; 8:25915-25927. [PMID: 28033108 PMCID: PMC5432226 DOI: 10.18632/oncotarget.13928] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/25/2016] [Indexed: 01/01/2023] Open
Abstract
Cancer stem cells (CSCs) are a subpopulation of cells that can self-renew and initiate tumours. The clotting-initiating protein Tissue Factor (TF) promotes metastasis and may be overexpressed in cancer cells with increased CSC activity. We sought to determine whether TF promotes breast CSC activity in vitro using human breast cancer cell lines. TF expression was compared in anoikis-resistant (CSC-enriched) and unselected cells. In cells sorted into of TF-expressing and TF-negative (FACS), and in cells transfected to knockdown TF (siRNA) and overexpress TF (cDNA), CSC activity was compared by (i) mammosphere forming efficiency (MFE) (ii) holoclone colony formation (Hc) and (iii) ALDH1 activity. TF expression was increased in anoikis-resistant and high ALDH1-activity T47D cells compared to unselected cells. FACS sorted TF-expressing T47Ds and TF-overexpressing MCF7s had increased CSC activity compared to TF-low cells. TF siRNA cells (MDAMB231,T47D) had reduced CSC activity compared to control cells. FVIIa increased MFE and ALDH1 in a dose-dependent manner (MDAMB231, T47D). The effects of FVIIa on MFE were abrogated by TF siRNA (T47D). Breast CSCs (in vitro) demonstrate increased activity when selected for high TF expression, when induced to overexpress TF, and when stimulated (with FVIIa). Targeting the TF pathway in vivo may abrogate CSC activity.
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Affiliation(s)
- Hudhaifah Shaker
- The University of Manchester, Manchester Academic Health Science Centre, Department of Academic Surgery, University Hospital of South Manchester, Manchester, UK
| | - Hannah Harrison
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - Robert Clarke
- Breast Biology Group, Manchester Cancer Research Centre, University of Manchester, Manchester, UK
| | - Goran Landberg
- Sahlgrenska Cancer Center, University of Gothenburg, Sweden
| | - Nigel J. Bundred
- The University of Manchester, Manchester Academic Health Science Centre, Department of Academic Surgery, University Hospital of South Manchester, Manchester, UK
| | - Henri H. Versteeg
- Department of Thrombosis and Hemostasis, Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, Netherlands
| | - Cliona C. Kirwan
- The University of Manchester, Manchester Academic Health Science Centre, Department of Academic Surgery, University Hospital of South Manchester, Manchester, UK
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8
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Thrombocytopenia in Dengue: Interrelationship between Virus and the Imbalance between Coagulation and Fibrinolysis and Inflammatory Mediators. Mediators Inflamm 2015; 2015:313842. [PMID: 25999666 PMCID: PMC4427128 DOI: 10.1155/2015/313842] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 01/22/2015] [Indexed: 01/15/2023] Open
Abstract
Dengue is an infectious disease caused by dengue virus (DENV). In general, dengue is a self-limiting acute febrile illness followed by a phase of critical defervescence, in which patients may improve or progress to a severe form. Severe illness is characterized by hemodynamic disturbances, increased vascular permeability, hypovolemia, hypotension, and shock. Thrombocytopenia and platelet dysfunction are common in both cases and are related to the clinical outcome. Different mechanisms have been hypothesized to explain DENV-associated thrombocytopenia, including the suppression of bone marrow and the peripheral destruction of platelets. Studies have shown DENV-infected hematopoietic progenitors or bone marrow stromal cells. Moreover, anti-platelet antibodies would be involved in peripheral platelet destruction as platelets interact with endothelial cells, immune cells, and/or DENV. It is not yet clear whether platelets play a role in the viral spread. Here, we focus on the mechanisms of thrombocytopenia and platelet dysfunction in DENV infection. Because platelets participate in the inflammatory and immune response by promoting cytokine, chemokine, and inflammatory mediator secretion, their relevance as "immune-like effector cells" will be discussed. Finally, an implication for platelets in plasma leakage will be also regarded, as thrombocytopenia is associated with clinical outcome and higher mortality.
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9
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Targeting the vasculature of colorectal carcinoma with a fused protein of (RGD)₃-tTF. ScientificWorldJournal 2013; 2013:637086. [PMID: 23861656 PMCID: PMC3703901 DOI: 10.1155/2013/637086] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 05/08/2013] [Indexed: 11/18/2022] Open
Abstract
Purpose. Truncated tissue factor (tTF) fusion protein targeting tumor vasculature can induce tumor vascular thrombosis and necrosis. Here, we generated (RGD)3-tTF in which three arginine-glycine-aspartic (RGD) targeting integrin αvβ3 and tTF induce blood coagulation in tumor vessels. Methods. The bioactivities of (RGD)3-tTF including coagulation activity, FX activation, and binding with integrin αvβ3 were performed. The fluorescent labeled (RGD)3-tTF was intravenously injected into tumor-bearing mice and traced in vivo. The tumor growth, volume, blood vessel thrombosis, tumor necrosis, and survival time of mice treated with (RGD)3-tTF were evaluated. Results. The clotting time and FX activation of (RGD)3-tTF were similar to that of TF (P > 0.05) but different with that of RGD (P < 0.05). (RGD)3-tTF presented a higher binding with αvβ3 than that of RGD and TF at the concentration of 0.2 μmol/L (P < 0.05). (RGD)3-tTF could specifically assemble in tumor and be effective in reducing tumor growth by selectively inducing tumor blood vessels thrombosis and tumor necrosis which were absent in mice treated with RGD or TF. The survival time of mice treated with (RGD)3-tTF was higher than that of mice treated with TF or RGD (P < 0.05). Conclusion. (RGD)3-tTF may be a promising strategy for the treatment of colorectal cancer.
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10
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Saiwai H, Kumamaru H, Ohkawa Y, Kubota K, Kobayakawa K, Yamada H, Yokomizo T, Iwamoto Y, Okada S. Ly6C+Ly6G−Myeloid-derived suppressor cells play a critical role in the resolution of acute inflammation and the subsequent tissue repair process after spinal cord injury. J Neurochem 2013; 125:74-88. [DOI: 10.1111/jnc.12135] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2012] [Revised: 12/17/2012] [Accepted: 12/21/2012] [Indexed: 02/01/2023]
Affiliation(s)
- Hirokazu Saiwai
- Department of Advanced Medical Initiatives; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
- Department of Orthopedic Surgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Hiromi Kumamaru
- Department of Advanced Medical Initiatives; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
- Department of Orthopedic Surgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Yasuyuki Ohkawa
- Department of Advanced Medical Initiatives; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Kensuke Kubota
- Department of Advanced Medical Initiatives; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
- Department of Orthopedic Surgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Kazu Kobayakawa
- Department of Advanced Medical Initiatives; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
- Department of Orthopedic Surgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Hisakata Yamada
- Division of Host Defense; Department of Molecular and Cellular Biology; Medical Institute of Bioregulation; Kyushu University; Fukuoka Japan
| | - Takehiko Yokomizo
- Department of Medical Biochemistry; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Yukihide Iwamoto
- Department of Orthopedic Surgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Seiji Okada
- Department of Advanced Medical Initiatives; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
- Department of Orthopedic Surgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
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Abstract
Generation of thrombin has been established as the critical process leading to coagulation in vivo. Indeed, ex vivo markers of thrombin generation in patients have been useful in detecting thrombosis, while many standard global clot-time tests of haemostasis in blood or plasma samples are simple endpoint measures of the potential to generate thrombin. Thus, there has been a recent surge towards direct measurement of thrombin generation potential in plasma/blood samples as a refined methodology for more precisely assessing procoagulant/anticoagulant/hemorrhagic parameters of the haemostatic status. Presently, however, there is no consensus method for thrombin generation determination. The present treatise gives detailed procedures for available thrombin generation tests, with emphasis on the preferred technology.
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Affiliation(s)
- Leslie R Berry
- Thrombosis and Atherosclerosis Research Institute (TaARI), McMaster University, Hamilton, ON, Canada
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12
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Boettcher JM, Clay MC, LaHood BJ, Morrissey JH, Rienstra CM. Backbone 1H, 13C and 15N resonance assignments of the extracellular domain of tissue factor. BIOMOLECULAR NMR ASSIGNMENTS 2010; 4:183-185. [PMID: 20526825 PMCID: PMC2947601 DOI: 10.1007/s12104-010-9233-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Accepted: 05/07/2010] [Indexed: 05/29/2023]
Abstract
Backbone (1)H, (13)C and (15)N resonance assignments are presented for the extracellular domain of tissue factor. Tissue factor is the integral membrane protein that initiates blood coagulation through the formation an enzymatic complex with the plasma serine protease, factor VIIa.
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Affiliation(s)
- John M. Boettcher
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S Mathews Ave, Box 50-6, Urbana, IL 61801, USA
| | - Mary C. Clay
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S Mathews Ave, Box 50-6, Urbana, IL 61801, USA
| | - Benjamin J. LaHood
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - James H. Morrissey
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. College of Medicine, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Chad M. Rienstra
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S Mathews Ave, Box 50-6, Urbana, IL 61801, USA. Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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13
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Godwin JW, Liem KF, Brockes JP. Tissue factor expression in newt iris coincides with thrombin activation and lens regeneration. Mech Dev 2010; 127:321-8. [PMID: 20420902 DOI: 10.1016/j.mod.2010.04.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Revised: 04/12/2010] [Accepted: 04/16/2010] [Indexed: 12/17/2022]
Abstract
Lens regeneration in adult salamanders occurs at the pupillary margin of the mid-dorsal iris where pigmented epithelial cells (PEC) re-enter the cell cycle and transdifferentiate into lens. It is not understood how the injury caused by removal of the lens (lentectomy) in one location is linked to initiating the response in a different spatial location (dorsal iris) and to this particular sector. We propose that the blood provides a link between the localised coagulation and signal transduction pathways that lead to regeneration. A transmembrane protein (tissue factor) is expressed in a striking patch-like domain in the dorsal iris of the newt that localises coagulation specifically to this location, but is not expressed in the axolotl, a related species that does not show thrombin activation after lentectomy and cannot regenerate its lens. Our hypothesis is that tissue factor expression localises the initiation of regeneration through the activation of thrombin and the recruitment of blood cells, leading to local growth factor release. This is the first example of gene expression in a patch of cells that prefigures the location of a regenerative response, and links the immune system with the initiation of a regenerative program.
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Affiliation(s)
- James W Godwin
- Institute of Structural and Molecular Biology, University College London, London, WC1E 6BT, UK.
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14
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Wolfe PS, Madurantakam P, Garg K, Sell SA, Beckman MJ, Bowlin GL. Evaluation of thrombogenic potential of electrospun bioresorbable vascular graft materials: acute monocyte tissue factor expression. J Biomed Mater Res A 2010; 92:1321-8. [PMID: 19353561 DOI: 10.1002/jbm.a.32458] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The purpose of this study was to quantify the acute expression of tissue factor (TF) by monocytes on interaction with electrospun bioresorbable constructs. A minimal expression of TF will demonstrate the potential for scaffolds to be used as a vascular graft without enhanced risk of failure from acute thrombotic occlusion. Polydioxanone (PDO) (60, 80, 120, and 160 mg/mL) and polycaprolactone (PCL) (80, 10, and 160 mg/mL) dissolved in 1,1,1,3,3,3 hexafluoro-2-propanol (HFP) were electrospun to form fibrous scaffolds. Circular discs (10 mm diameter) of each scaffold were disinfected and seeded with human monocytes (50,000 cells/well). The discs were statically cultured under standard conditions (37 degrees C and 5% CO2), and removed after 24 h for TF analysis with an In-Cell Western assay. Fiber diameter was calculated through ImageTool analysis of scanning electron micrographs. Acute monocyte interaction with scaffolds of PCL (120 mg/mL) resulted in the lowest amount of TF expressed (4 ng/disc), whereas scaffolds of 160 mg/mL PDO elicited the highest amount of TF expressed (51 ng/disc). TF levels expressed on all scaffolds were comparable with the amount expressed on e-PTFE (20 ng/disc). Preliminary data for TF expression on scaffolds of silk (70 mg/mL and 150 mg/mL) and silk:PCL (100 mg/mL, v/v) blends (50:50 and 70:30) resulted in values of TF expression ranging from 0 to 24 ng. Results from this study reveal electrospun grafts composed of PDO and PCL provide no greater risk of failure from an acute thrombotic occlusion due to TF expression when compared with that of the standard e-PTFE graft.
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Affiliation(s)
- Patricia S Wolfe
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284-3067, USA
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15
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PEI XH, CHI S, WANG JT, LIN ZX, ZHANG XH, GENG JG. Generation and Application of Active Recombinant Mouse Tissue Factor and Its Function-blocking Monoclonal Antibody*. PROG BIOCHEM BIOPHYS 2009. [DOI: 10.3724/sp.j.1206.2008.00639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Szczerba D, Kurz H, Szekely G. A computational model of intussusceptive microvascular growth and remodeling. J Theor Biol 2009; 261:570-83. [DOI: 10.1016/j.jtbi.2009.09.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 09/10/2009] [Accepted: 09/10/2009] [Indexed: 12/27/2022]
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Milner JM, Patel A, Rowan AD. Emerging roles of serine proteinases in tissue turnover in arthritis. ACTA ACUST UNITED AC 2009; 58:3644-56. [PMID: 19035508 DOI: 10.1002/art.24046] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- J M Milner
- Musculoskeletal Research Group, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
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Lilly B, Kennard S. Differential gene expression in a coculture model of angiogenesis reveals modulation of select pathways and a role for Notch signaling. Physiol Genomics 2008; 36:69-78. [PMID: 18984672 DOI: 10.1152/physiolgenomics.90318.2008] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Communication between endothelial and mural cells (smooth muscle cells, pericytes, and fibroblasts) can dictate blood vessel size and shape during angiogenesis, and control the functional aspects of mature blood vessels, by determining things such as contractile properties. The ability of these different cell types to regulate each other's activities led us to ask how their interactions directly modulate gene expression. To address this, we utilized a three-dimensional model of angiogenesis and screened for genes whose expression was altered under coculture conditions. Using a BeadChip array, we identified 323 genes that were uniquely regulated when endothelial cells and mural cells (fibroblasts) were cultured together. Data mining tools revealed that differential expression of genes from the integrin, blood coagulation, and angiogenesis pathways were overrepresented in coculture conditions. Scans of the promoters of these differentially modulated genes identified a multitude of conserved C promoter binding factor (CBF)1/CSL elements, implicating Notch signaling in their regulation. Accordingly, inhibition of the Notch pathway with gamma-secretase inhibitor DAPT or NOTCH3-specific small interfering RNA blocked the coculture-induced regulation of several of these genes in fibroblasts. These data show that coculturing of endothelial cells and fibroblasts causes profound changes in gene expression and suggest that Notch signaling is a critical mediator of the resultant transcription.
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Affiliation(s)
- Brenda Lilly
- Vascular Biology Center and Department of Obstetrics and Gynecology, Medical College of Georgia, 1459 Laney Walker Blvd., Augusta, GA 30912, USA.
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