1
|
Khan A, Siddiqui U, Fatima S, Rehman A, Jairajpuri M. Protein disulfide isomerase uses thrombin-antithrombin complex as a template to bind its target protein and alter the blood coagulation rates. Biosci Rep 2024; 44:BSR20231540. [PMID: 38660763 PMCID: PMC11096647 DOI: 10.1042/bsr20231540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/26/2024] Open
Abstract
During inflammation and situations of cellular stress protein disulfide isomerase (PDI) is released in the blood plasma from the platelet and endothelial cells to influence thrombosis. The addition of exogenous PDI makes the environment pro-thrombotic by inducing disulfide bond formation in specific plasma protein targets like vitronectin, factor V, and factor XI. However, the mechanistic details of PDI interaction with its target remain largely unknown. A decrease in the coagulation time was detected in activated partial thromboplastin time (APTT), prothrombin time (PT), and thrombin time (TT) on addition of the purified recombinant PDI (175 nM). The coagulation time can be controlled using an activator (quercetin penta sulfate, QPS) or an inhibitor (quercetin 3-rutinoside, Q3R) of PDI activity. Likewise, the PDI variants that increase the PDI activity (H399R) decrease, and the variant with low activity (C53A) increases the blood coagulation time. An SDS-PAGE and Western blot analysis showed that the PDI does not form a stable complex with either thrombin or antithrombin (ATIII) but it uses the ATIII-thrombin complex as a template to bind and maintain its activity. A complete inhibition of thrombin activity on the formation of ATIII-thrombin-PDI complex, and the complex-bound PDI-catalyzed disulfide bond formation of the target proteins may control the pro- and anti-thrombotic role of PDI.
Collapse
Affiliation(s)
- Abdul Burhan Khan
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Urfi Siddiqui
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Sana Fatima
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Ahmed Abdur Rehman
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | | |
Collapse
|
2
|
Giessler KS, Goehring LS, Jacob SI, Davis A, Esser MM, Lee Y, Zarski LM, Weber PSD, Hussey GS. Impact of the host immune response on the development of equine herpesvirus myeloencephalopathy in horses. J Gen Virol 2024; 105. [PMID: 38767608 DOI: 10.1099/jgv.0.001987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
Herpesviruses establish a well-adapted balance with their host's immune system. Despite this co-evolutionary balance, infections can lead to severe disease including neurological disorders in their natural host. In horses, equine herpesvirus 1 (EHV-1) causes respiratory disease, abortions, neonatal foal death and myeloencephalopathy (EHM) in ~10 % of acute infections worldwide. Many aspects of EHM pathogenesis and protection from EHM are still poorly understood. However, it has been shown that the incidence of EHM increases to >70 % in female horses >20 years of age. In this study we used old mares as an experimental equine EHV-1 model of EHM to identify host-specific factors contributing to EHM. Following experimental infection with the neuropathogenic strain EHV-1 Ab4, old mares and yearling horses were studied for 21 days post-infection. Nasal viral shedding and cell-associated viremia were assessed by quantitative PCR. Cytokine/chemokine responses were evaluated in nasal secretions and cerebrospinal fluid (CSF) by Luminex assay and in whole blood by quantitative real-time PCR. EHV-1-specific IgG sub-isotype responses were measured by ELISA. All young horses developed respiratory disease and a bi-phasic fever post-infection, but only 1/9 horses exhibited ataxia. In contrast, respiratory disease was absent in old mares, but all old mares developed EHM that resulted in euthanasia in 6/9 old mares. Old mares also presented significantly decreased nasal viral shedding but higher viremia coinciding with a single fever peak at the onset of viremia. According to clinical disease manifestation, horses were sorted into an EHM group (nine old horses and one young horse) and a non-EHM group (eight young horses) for assessment of host immune responses. Non-EHM horses showed an early upregulation of IFN-α (nasal secretions), IRF7/IRF9, IL-1β, CXCL10 and TBET (blood) in addition to an IFN-γ upregulation during viremia (blood). In contrast, IFN-α levels in nasal secretions of EHM horses were low and peak levels of IRF7, IRF9, CXCL10 and TGF-β (blood) coincided with viremia. Moreover, EHM horses showed significantly higher IL-10 levels in nasal secretions, peripheral blood mononuclear cells and CSF and higher serum IgG3/5 antibody titres compared to non-EHM horses. These results suggest that protection from EHM depends on timely induction of type 1 IFN and upregulation cytokines and chemokines that are representative of cellular immunity. In contrast, induction of regulatory or TH-2 type immunity appeared to correlate with an increased risk for EHM. It is likely that future vaccine development for protection from EHM must target shifting this 'at-risk' immunophenotype.
Collapse
Affiliation(s)
- K S Giessler
- Department of Pathobiology & Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
- Bavarian Health and Food Safety Authority, Oberschleissheim, Germany
| | - L S Goehring
- MH Gluck Equine Research Center, College of Agriculture, Food & Environment, University of Kentucky, Lexington, KY, USA
| | - S I Jacob
- Department of Pathobiology & Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Allison Davis
- Department of Pathobiology & Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - M M Esser
- Department of Pathobiology & Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Y Lee
- Pathology Core, Unit for Laboratory Animal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - L M Zarski
- Department of Pathobiology & Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - P S D Weber
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - G S Hussey
- Department of Pathobiology & Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| |
Collapse
|
3
|
Scheuba A, Zagrapan B, Martelanz L, Eder V, Ibrahim N, Bleichert S, Knöbl V, Hayden H, von Kuenheim S, Münch K, Buchtele N, Schoergenhofer C, Kovacevic KD, Lackner E, Drucker C, Neumayer C, Jilma B, Brostjan C. Differential regulation of human thrombospondin-1 upon systemic desmopressin versus endotoxin challenge. Thromb Res 2024; 237:205-208. [PMID: 38521738 DOI: 10.1016/j.thromres.2024.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/28/2023] [Accepted: 01/12/2024] [Indexed: 03/25/2024]
Affiliation(s)
- Andreas Scheuba
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Branislav Zagrapan
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Luca Martelanz
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Vanessa Eder
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Nahla Ibrahim
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Sonja Bleichert
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Viktoria Knöbl
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Hubert Hayden
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Sarah von Kuenheim
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Katharina Münch
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Nina Buchtele
- Department of Medicine I, Intensive Care Unit 13i2, Medical University of Vienna, University Hospital Vienna, Austria; Intensive Care in Hematologic and Oncologic Patients (iCHOP), Medical University of Vienna, University Hospital Vienna, Austria
| | - Christian Schoergenhofer
- Department of Clinical Pharmacology, Medical University of Vienna, University Hospital Vienna, Austria
| | - Katarina D Kovacevic
- Department of Clinical Pharmacology, Medical University of Vienna, University Hospital Vienna, Austria
| | - Edith Lackner
- Department of Clinical Pharmacology, Medical University of Vienna, University Hospital Vienna, Austria
| | - Christa Drucker
- Department of Clinical Pharmacology, Medical University of Vienna, University Hospital Vienna, Austria
| | - Christoph Neumayer
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria
| | - Bernd Jilma
- Department of Clinical Pharmacology, Medical University of Vienna, University Hospital Vienna, Austria
| | - Christine Brostjan
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, University Hospital Vienna, Austria.
| |
Collapse
|
4
|
Thalwieser Z, Fonódi M, Király N, Csortos C, Boratkó A. PP2A Affects Angiogenesis via Its Interaction with a Novel Phosphorylation Site of TSP1. Int J Mol Sci 2024; 25:1844. [PMID: 38339122 PMCID: PMC10855381 DOI: 10.3390/ijms25031844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024] Open
Abstract
Alterations in angiogenic properties play a pivotal role in the manifestation and onset of various pathologies, including vascular diseases and cancer. Thrombospondin-1 (TSP1) protein is one of the master regulators of angiogenesis. This study unveils a novel aspect of TSP1 regulation through reversible phosphorylation. The silencing of the B55α regulatory subunit of protein phosphatase 2A (PP2A) in endothelial cells led to a significant decrease in TSP1 expression. Direct interaction between TSP1 and PP2A-B55α was confirmed via various methods. Truncated TSP1 constructs were employed to identify the phosphorylation site and the responsible kinase, ultimately pinpointing PKC as the enzyme phosphorylating TSP1 on Ser93. The biological effects of B55α-TSP1 interaction were also analyzed. B55α silencing not only counteracted the increase in TSP1 expression during wound closure but also prolonged wound closure time. Although B55α silenced cells initiated tube-like structures earlier than control cells, their spheroid formation was disrupted, leading to disintegration. Cells transfected with phosphomimic TSP1 S93D exhibited smaller spheroids and reduced effectiveness in tube formation, revealing insights into the effects of TSP1 phosphorylation on angiogenic properties. In this paper, we introduce a new regulatory mechanism of angiogenesis by reversible phosphorylation on TSP1 S93 by PKC and PP2A B55α.
Collapse
Affiliation(s)
| | | | | | | | - Anita Boratkó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (Z.T.); (M.F.); (C.C.)
| |
Collapse
|
5
|
Khan AB, Siddiqui U, Fatima S, Rehman AA, Jairajpuri MA. Naringin binds to protein disulfide isomerase to inhibit its activity and modulate the blood coagulation rates: Implications in controlling thrombosis. Int J Biol Macromol 2023; 252:126241. [PMID: 37567521 DOI: 10.1016/j.ijbiomac.2023.126241] [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: 03/23/2023] [Revised: 07/25/2023] [Accepted: 08/07/2023] [Indexed: 08/13/2023]
Abstract
Currently used antithrombotic drugs are beset with several drawbacks which necessitates the need for new and cheaper alternatives. Protein disulfide isomerase (PDI) is secreted in the blood plasma in cellular stress conditions and initiates the thrombus formation. A screening of library of natural compounds revealed that naringin had a high binding affinity for the PDI (-8.2 kcal/mol). Recombinant PDI was purified using the affinity chromatography. Incubation of purified PDI (3 μM) with naringin (0-100 μM, pH 7.4, 25 °C) partially modulated its conformation. Consequently, the fluorescence emission spectra of the PDI binding to naringin were assessed using the Stern-Volmer equation, which indicated an association constant of 2.78 × 104 M-1 suggesting an appreciable affinity for the naringin, with a unique binding site. An insulin turbidity assay showed that PDI activity is decreased in the presence of naringin indicating inhibition. Molecular dynamic simulation studies showed the changes in the PDI structure on binding to the naringin. Incubation of naringin (80 μM) in fresh human plasma along with exogenous PDI (175 nM) showed a significant delay in the intrinsic and extrinsic coagulation pathways. We show that naringin is able to modulate the PDI conformation and activity resulting in altered blood coagulation rates.
Collapse
Affiliation(s)
- Abdul Burhan Khan
- Department of Bioscience, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Urfi Siddiqui
- Department of Bioscience, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Sana Fatima
- Department of Bioscience, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Ahmed Abdur Rehman
- Department of Bioscience, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | | |
Collapse
|
6
|
Zhou Q, Gwag T, Wang S. Thrombospondin1 antagonist peptide treatment attenuates obesity-associated chronic inflammation and metabolic disorders in a diet-induced obese mouse model. Sci Rep 2023; 13:20193. [PMID: 37980376 PMCID: PMC10657402 DOI: 10.1038/s41598-023-47635-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 11/16/2023] [Indexed: 11/20/2023] Open
Abstract
Thrombospondin1 (TSP1) is a multifunctional matricellular protein. Previously, we demonstrated that TSP1 plays a pivotal role in obesity-related inflammation and insulin resistance (IR) by modulating macrophage accumulation and activation in adipose tissue. Moreover, in our in vitro studies, a CD36-derived peptide, functioning as a TSP1 antagonist, effectively inhibited TSP1-induced proinflammatory macrophage activation. However, whether this CD36 peptide can inhibit obesity-induced inflammation and IR in vivo is unknown and determined in this study in a high fat diet-induced obese mouse model (DIO). CD36 peptide or control peptide was intraperitoneally administered into the established obese mice triweekly for 6 weeks. We found that CD36 peptide treatment didn't affect obesity or weight gain but significantly reduced proinflammatory cytokine production systemically and in visceral fat tissue. Adipose tissue exhibited fewer crown-like structures and reduced macrophage infiltration. CD36 peptide treatment also attenuated the proinflammatory phenotype of bone marrow derived macrophages from obese mice. Furthermore, CD36 peptide treatment improved glucose tolerance and insulin sensitivity, and mitigated obesity-related fatty liver disease and kidney damage. Collectively, this study suggests that the CD36 peptide, as a TSP1 antagonist, shows promise as a novel therapeutic approach for managing obesity-related metabolic disorders.
Collapse
Affiliation(s)
- Qi Zhou
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Wethington Bldg. Room 583, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Lexington VA Medical Center, Lexington, KY, 40502, USA
| | - Taesik Gwag
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Wethington Bldg. Room 583, 900 S. Limestone Street, Lexington, KY, 40536, USA
- Lexington VA Medical Center, Lexington, KY, 40502, USA
| | - Shuxia Wang
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Wethington Bldg. Room 583, 900 S. Limestone Street, Lexington, KY, 40536, USA.
- Lexington VA Medical Center, Lexington, KY, 40502, USA.
| |
Collapse
|
7
|
Nagy M, van der Meijden PEJ, Glunz J, Schurgers L, Lutgens E, ten Cate H, Heitmeier S, Spronk HMH. Integrating Mechanisms in Thrombotic Peripheral Arterial Disease. Pharmaceuticals (Basel) 2022; 15:1428. [PMID: 36422558 PMCID: PMC9695058 DOI: 10.3390/ph15111428] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 11/10/2023] Open
Abstract
Peripheral arterial disease (PAD), a manifestation of systemic atherosclerosis, is underdiagnosed in the general population. Despite the extensive research performed to unravel its pathophysiology, inadequate knowledge exists, thus preventing the development of new treatments. This review aims to highlight the essential elements of atherosclerosis contributing to the pathophysiology of PAD. Furthermore, emphasis will be placed on the role of thrombo-inflammation, with particular focus on platelet and coagulation activation as well as cell-cell interactions. Additional insight will be then discussed to reveal the contribution of hypercoagulability to the development of vascular diseases such as PAD. Lastly, the current antithrombotic treatments will be discussed, and light will be shed on promising new targets aiming to aid the development of new treatments.
Collapse
Affiliation(s)
- Magdolna Nagy
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Paola E. J. van der Meijden
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, 6229 ER Maastricht, The Netherlands
- Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands
| | - Julia Glunz
- Cardiovascular Research, Bayer AG, 42117 Wuppertal, Germany
| | - Leon Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Esther Lutgens
- German Centre for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Munich, Germany
- Institute for Cardiovascular Prevention (IPEK), Ludwig Maximilian’s University, 80539 Munich, Germany
- Experimental Cardiovascular Immunology Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Hugo ten Cate
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, 6229 ER Maastricht, The Netherlands
- Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands
- Department of Internal Medicine, Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands
- Center for Thrombosis and Hemostasis, Gutenberg University Mainz, 55122 Mainz, Germany
| | | | - Henri M. H. Spronk
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, 6229 ER Maastricht, The Netherlands
- Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands
- Department of Internal Medicine, Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands
| |
Collapse
|
8
|
Tabary M, Gheware A, Peñaloza HF, Lee JS. The matricellular protein thrombospondin-1 in lung inflammation and injury. Am J Physiol Cell Physiol 2022; 323:C857-C865. [PMID: 35912991 PMCID: PMC9467471 DOI: 10.1152/ajpcell.00182.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/22/2022]
Abstract
Matricellular proteins comprise a diverse group of molecular entities secreted into the extracellular space. They interact with the extracellular matrix (ECM), integrins, and other cell-surface receptors, and can alter matrix strength, cell attachment to the matrix, and cell-cell adhesion. A founding member of this group is thrombospondin-1 (TSP-1), a high molecular-mass homotrimeric glycoprotein. Given the importance of the matrix and ECM remodeling in the lung following injury, TSP-1 has been implicated in a number of lung pathologies. This review examines the role of TSP-1 as a damage controller in the context of lung inflammation, injury resolution, and repair in noninfectious and infectious models. This review also discusses the potential role of TSP-1 in human diseases as it relates to lung inflammation and injury.
Collapse
Affiliation(s)
- Mohammadreza Tabary
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Atish Gheware
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Hernán F Peñaloza
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Janet S Lee
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| |
Collapse
|
9
|
Kaida T, Hayashi H, Sato H, Kinoshita S, Matsumoto T, Shiraishi Y, Kitano Y, Higashi T, Imai K, Yamashita YI, Baba H. Assessment for the minimal invasiveness of laparoscopic liver resection by interleukin-6 and thrombospondin-1. World J Hepatol 2022; 14:234-243. [PMID: 35126851 PMCID: PMC8790401 DOI: 10.4254/wjh.v14.i1.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 06/23/2021] [Accepted: 12/11/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Laparoscopic surgery has been introduced as a minimally invasive technique for the treatment of various field. However, there are few reports that have scientifically investigated the minimally invasive nature of laparoscopic liver resection (LLR).
AIM To investigate whether LLR is scientifically less invasive than open liver resection.
METHODS During December 2011 to April 2015, blood samples were obtained from 30 patients who treated with laparoscopic (n = 10, 33%) or open (n = 20, 67%) partial liver resection for liver tumor. The levels of serum interleukin-6 (IL-6) and plasma thrombospondin-1 (TSP-1) were measured using ELISA kit at four time points including preoperative, immediate after operation, postoperative day 1 (POD1) and POD3. Then, we investigated the impact of the operative approaches during partial hepatectomy on the clinical time course including IL-6 and TSP-1.
RESULTS Serum level of IL-6 on POD1 in laparoscopic hepatectomy was significantly lower than those in open hepatectomy (8.7 vs 30.3 pg/mL, respectively) (P = 0.003). Plasma level of TSP-1 on POD3 in laparoscopic hepatectomy was significantly higher than those in open hepatectomy (1704.0 vs 548.3 ng/mL, respectively) (P = 0.009), and have already recovered to preoperative level in laparoscopic approach. In patients with higher IL-6 Levels on POD1, plasma level of TSP-1 on POD3 was significantly lower than those in patients with lower IL-6 Levels on POD1. Multivariate analysis showed that open approach was the only independent factor related to higher level of IL-6 on POD1 [odds ratio (OR), 7.48; 95% confidence interval (CI): 1.28-63.3; P = 0.02]. Furthermore, the higher level of serum IL-6 on POD1 was significantly associated with lower level of plasm TSP-1 on POD3 (OR, 5.32; 95%CI: 1.08-32.2; P = 0.04) in multivariate analysis.
CONCLUSION In partial hepatectomy, laparoscopic approach might be minimally invasive surgery with less IL-6 production compared to open approach.
Collapse
Affiliation(s)
- Takayoshi Kaida
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Hiromitsu Hayashi
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Hiroki Sato
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Shotaro Kinoshita
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Takashi Matsumoto
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Yuta Shiraishi
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Yuki Kitano
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Takaaki Higashi
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Katsunori Imai
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Yo-ichi Yamashita
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Hideo Baba
- Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| |
Collapse
|
10
|
Manini A, Pantoni L. CADASIL from Bench to Bedside: Disease Models and Novel Therapeutic Approaches. Mol Neurobiol 2021; 58:2558-2573. [PMID: 33464533 PMCID: PMC8128844 DOI: 10.1007/s12035-021-02282-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/05/2021] [Indexed: 12/21/2022]
Abstract
Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a monogenic disease caused by NOTCH3 mutations and characterized by typical clinical, neuroradiological, and pathological features. NOTCH3 belongs to a family of highly conserved transmembrane receptors rich of epidermal growth factor repeats, mostly expressed in vascular smooth muscle cells and pericytes, which perform essential developmental functions and are involved in tissues maintenance and renewal. To date, no therapeutic option for CADASIL is available except for few symptomatic treatments. Novel in vitro and in vivo models are continuously explored with the aim to investigate underlying pathogenic mechanisms and to test novel therapeutic approaches. In this scenario, knock-out, knock-in, and transgenic mice studies have generated a large amount of information on molecular and biological aspects of CADASIL, despite that they incompletely reproduce the human phenotype. Moreover, the field of in vitro models has been revolutionized in the last two decades by the introduction of induced pluripotent stem cells (iPSCs) technology. As a consequence, novel therapeutic approaches, including immunotherapy, growth factors administration, and antisense oligonucleotides, are currently under investigation. While waiting that further studies confirm the promising results obtained, the data reviewed suggest that our therapeutic approach to the disease could be transformed, generating new hope for the future.
Collapse
Affiliation(s)
- Arianna Manini
- Stroke and Dementia Lab, "Luigi Sacco" Department of Biomedical and Clinical Sciences, University of Milan, Via Giovanni Battista Grassi 74, 20157, Milano, Italy
| | - Leonardo Pantoni
- Stroke and Dementia Lab, "Luigi Sacco" Department of Biomedical and Clinical Sciences, University of Milan, Via Giovanni Battista Grassi 74, 20157, Milano, Italy.
| |
Collapse
|
11
|
Burke RM, Burgos Villar KN, Small EM. Fibroblast contributions to ischemic cardiac remodeling. Cell Signal 2021; 77:109824. [PMID: 33144186 PMCID: PMC7718345 DOI: 10.1016/j.cellsig.2020.109824] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/27/2020] [Accepted: 10/28/2020] [Indexed: 12/23/2022]
Abstract
The heart can respond to increased pathophysiological demand through alterations in tissue structure and function 1 . This process, called cardiac remodeling, is particularly evident following myocardial infarction (MI), where the blockage of a coronary artery leads to widespread death of cardiac muscle. Following MI, necrotic tissue is replaced with extracellular matrix (ECM), and the remaining viable cardiomyocytes (CMs) undergo hypertrophic growth. ECM deposition and cardiac hypertrophy are thought to represent an adaptive response to increase structural integrity and prevent cardiac rupture. However, sustained ECM deposition leads to the formation of a fibrotic scar that impedes cardiac compliance and can induce lethal arrhythmias. Resident cardiac fibroblasts (CFs) are considered the primary source of ECM molecules such as collagens and fibronectin, particularly after becoming activated by pathologic signals. CFs contribute to multiple phases of post-MI heart repair and remodeling, including the initial response to CM death, immune cell (IC) recruitment, and fibrotic scar formation. The goal of this review is to describe how resident fibroblasts contribute to the healing and remodeling that occurs after MI, with an emphasis on how fibroblasts communicate with other cell types in the healing infarct scar 1 –6 .
Collapse
Affiliation(s)
- Ryan M Burke
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA; Department of Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, United States of America
| | - Kimberly N Burgos Villar
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Eric M Small
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA; Department of Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, United States of America; Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, United States of America; Department of Biomedical Engineering, University of Rochester, Rochester, NY 14642, United States of America.
| |
Collapse
|
12
|
Pielsticker C, Brodde MF, Raum L, Jurk K, Kehrel BE. Plasmin-Induced Activation of Human Platelets Is Modulated by Thrombospondin-1, Bona Fide Misfolded Proteins and Thiol Isomerases. Int J Mol Sci 2020; 21:ijms21228851. [PMID: 33238433 PMCID: PMC7700677 DOI: 10.3390/ijms21228851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/10/2020] [Accepted: 11/18/2020] [Indexed: 02/06/2023] Open
Abstract
Inflammatory processes are triggered by the fibrinolytic enzyme plasmin. Tissue-type plasminogen activator, which cleaves plasminogen to plasmin, can be activated by the cross-β-structure of misfolded proteins. Misfolded protein aggregates also represent substrates for plasmin, promoting their degradation, and are potent platelet agonists. However, the regulation of plasmin-mediated platelet activation by misfolded proteins and vice versa is incompletely understood. In this study, we hypothesize that plasmin acts as potent agonist of human platelets in vitro after short-term incubation at room temperature, and that the response to thrombospondin-1 and the bona fide misfolded proteins Eap and SCN--denatured IgG interfere with plasmin, thereby modulating platelet activation. Plasmin dose-dependently induced CD62P surface expression on, and binding of fibrinogen to, human platelets in the absence/presence of plasma and in citrated whole blood, as analyzed by flow cytometry. Thrombospondin-1 pre-incubated with plasmin enhanced these plasmin-induced platelet responses at low concentration and diminished them at higher dose. Platelet fibrinogen binding was dose-dependently induced by the C-terminal thrombospondin-1 peptide RFYVVMWK, Eap or NaSCN-treated IgG, but diminished in the presence of plasmin. Blocking enzymatically catalyzed thiol-isomerization decreased plasmin-induced platelet responses, suggesting that plasmin activates platelets in a thiol-dependent manner. Thrombospondin-1, depending on the concentration, may act as cofactor or inhibitor of plasmin-induced platelet activation, and plasmin blocks platelet activation induced by misfolded proteins and vice versa, which might be of clinical relevance.
Collapse
Affiliation(s)
- Claudia Pielsticker
- Department of Anaesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Haemostasis, University of Muenster, 48149 Muenster, Germany; (C.P.); (L.R.)
| | | | - Lisa Raum
- Department of Anaesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Haemostasis, University of Muenster, 48149 Muenster, Germany; (C.P.); (L.R.)
| | - Kerstin Jurk
- Department of Anaesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Haemostasis, University of Muenster, 48149 Muenster, Germany; (C.P.); (L.R.)
- Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
- Correspondence: (K.J.); (B.E.K.); Tel.: +49-6131178278 (K.J.); +49-2518356725 (B.E.K.)
| | - Beate E. Kehrel
- Department of Anaesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Haemostasis, University of Muenster, 48149 Muenster, Germany; (C.P.); (L.R.)
- OxProtect GmbH, 48149 Muenster, Germany;
- Correspondence: (K.J.); (B.E.K.); Tel.: +49-6131178278 (K.J.); +49-2518356725 (B.E.K.)
| |
Collapse
|
13
|
Ritz MF, Jenoe P, Bonati L, Engelter S, Lyrer P, Peters N. Combined Transcriptomic and Proteomic Analyses of Cerebral Frontal Lobe Tissue Identified RNA Metabolism Dysregulation as One Potential Pathogenic Mechanism in Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL). Curr Neurovasc Res 2020; 16:481-493. [PMID: 31657685 DOI: 10.2174/1567202616666191023111059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/11/2019] [Accepted: 10/15/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Cerebral small vessel disease (SVD) is an important cause of stroke and vascular cognitive impairment (VCI), leading to subcortical ischemic vascular dementia. As a hereditary form of SVD with early onset, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) represents a pure form of SVD and may thus serve as a model disease for SVD. To date, underlying molecular mechanisms linking vascular pathology and subsequent neuronal damage in SVD are incompletely understood. OBJECTIVE We performed comparative transcriptional profiling microarray and proteomic analyses on post-mortem frontal lobe specimen from 2 CADASIL patients and 5 non neurologically diseased controls in order to identify dysregulated pathways potentially involved in the development of tissue damage in CADASIL. METHODS Transcriptional microarray analysis of material extracted from frontal grey and white matter (WM) identified subsets of up- or down-regulated genes enriched into biological pathways mostly in WM areas. Proteomic analysis of these regions also highlighted cellular processes identified by dysregulated proteins. RESULTS Discrepancies between proteomic and transcriptomic data were observed, but a number of pathways were commonly associated with genes and corresponding proteins, such as: "ribosome" identified by upregulated genes and proteins in frontal cortex or "spliceosome" associated with down-regulated genes and proteins in frontal WM. CONCLUSION This latter finding suggests that defective expression of spliceosomal components may alter widespread splicing profile, potentially inducing expression abnormalities that could contribute to cerebral WM damage in CADASIL.
Collapse
Affiliation(s)
- Marie-Françoise Ritz
- Department of Biomedicine, Brain Tumor Biology Laboratory, University of Basel, and University Hospital of Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Paul Jenoe
- Proteomics Core Facility, Biocenter, University of Basel, Klingelbergstrasse 50/70, 4056 Basel, Switzerland
| | - Leo Bonati
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Stefan Engelter
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland.,Neurorehabilitation Unit, University of Basel and University Center for Medicine of Aging, Felix Platter Hospital, Burgfelderstrasse 101, 4055 Basel, Switzerland
| | - Philippe Lyrer
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Nils Peters
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland.,Neurorehabilitation Unit, University of Basel and University Center for Medicine of Aging, Felix Platter Hospital, Burgfelderstrasse 101, 4055 Basel, Switzerland
| |
Collapse
|
14
|
Al-Awadhi A, Adekile A, Marouf R. Relationship of Thrombospondin 1 to von Willebrand Factor and ADAMTS-13 in Sickle Cell Disease Patients of Arab Ethnicity. Acta Haematol 2020; 144:182-189. [PMID: 32987383 DOI: 10.1159/000508521] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 05/06/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND Thrombospondin 1 (TSP-1) is a multifunctional glycoprotein secreted by platelets. In sickle cell disease (SCD), TSP-1 promotes red cell adhesion to the endothelium by binding to von Willebrand factor (vWF) and inhibiting its degradation by the protease ADAMTS-13. We investigated a possible correlation between TSP-1, vWF and ADAMTS-13 in adult and pediatric SCD patients. METHODS Using commercially available ELISA kits, TSP-1, vWF and ADAMTS-13 levels were measured in 59 SCD patients (20 children and 39 adults) and compared with 59 age- and sex-matched controls. Associations between TSP-1 and parameters of interest were analyzed using Pearson's correlation coefficient. RESULTS Although TSP-1 levels were higher in adult and pediatric SCD patients than in controls, the increase was not statistically significant (p > 0.05). We found a significant positive correlation between TSP-1 and platelet count in both adult (r = 0.402, p = 0.01) and pediatric (r = 0.589, p = 0.01) patients, which is expected due to increased platelet activation in SCD. There was a positive correlation between TSP-1 and vWF in normal adults (r = 0.305, p = 0.049) and children (r = 0.633, p = 0.005) but not in patients (p > 0.05). A significant negative correlation between TSP-1 and ADAMTS-13 activity (r = -0.41, p = 0.01) was found in adult patients. Also, a significant negative correlation between TSP-1 and ADAMTS-13/vWF antigen ratio in both normal controls (r = -0.595, p = 0.009) and patients (r = -0.493, p = 0.032) is reported for the pediatric group. CONCLUSIONS Our findings confirm the inhibitory effects of TSP-1 on ADAMTS-13 activity in adult SCD patients. The negative correlation reported between TSP-1 and ADAMTS-13/vWF antigen ratio in pediatric subjects suggests a possible protective mechanism in younger individuals, although this is not related to the presence of SCD. This work emphasizes the impact of age on interpreting results related to the regulation of vWF expression and interaction with TSP-1 and ADAMTS-13 in SCD.
Collapse
Affiliation(s)
- Anwar Al-Awadhi
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Kuwait University, Kuwait City, Kuwait,
| | - Adekunle Adekile
- Department of Pediatrics, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Rajaa Marouf
- Department of Pathology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| |
Collapse
|
15
|
Ling C, Liu Z, Song M, Zhang W, Wang S, Liu X, Ma S, Sun S, Fu L, Chu Q, Belmonte JCI, Wang Z, Qu J, Yuan Y, Liu GH. Modeling CADASIL vascular pathologies with patient-derived induced pluripotent stem cells. Protein Cell 2019; 10:249-271. [PMID: 30778920 PMCID: PMC6418078 DOI: 10.1007/s13238-019-0608-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 12/29/2018] [Indexed: 12/23/2022] Open
Abstract
Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a rare hereditary cerebrovascular disease caused by a NOTCH3 mutation. However, the underlying cellular and molecular mechanisms remain unidentified. Here, we generated non-integrative induced pluripotent stem cells (iPSCs) from fibroblasts of a CADASIL patient harboring a heterozygous NOTCH3 mutation (c.3226C>T, p.R1076C). Vascular smooth muscle cells (VSMCs) differentiated from CADASIL-specific iPSCs showed gene expression changes associated with disease phenotypes, including activation of the NOTCH and NF-κB signaling pathway, cytoskeleton disorganization, and excessive cell proliferation. In comparison, these abnormalities were not observed in vascular endothelial cells (VECs) derived from the patient's iPSCs. Importantly, the abnormal upregulation of NF-κB target genes in CADASIL VSMCs was diminished by a NOTCH pathway inhibitor, providing a potential therapeutic strategy for CADASIL. Overall, using this iPSC-based disease model, our study identified clues for studying the pathogenic mechanisms of CADASIL and developing treatment strategies for this disease.
Collapse
Affiliation(s)
- Chen Ling
- Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
- Department of Neurology, Peking University First Hospital, Beijing, 100034, China
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zunpeng Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Moshi Song
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem cell and Regeneration, CAS, Beijing, 100101, China
| | - Weiqi Zhang
- Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem cell and Regeneration, CAS, Beijing, 100101, China
| | - Si Wang
- Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem cell and Regeneration, CAS, Beijing, 100101, China
| | - Xiaoqian Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shuai Ma
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem cell and Regeneration, CAS, Beijing, 100101, China
| | - Shuhui Sun
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lina Fu
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qun Chu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Juan Carlos Izpisua Belmonte
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, 100034, China
| | - Jing Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem cell and Regeneration, CAS, Beijing, 100101, China.
| | - Yun Yuan
- Department of Neurology, Peking University First Hospital, Beijing, 100034, China.
| | - Guang-Hui Liu
- Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China.
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem cell and Regeneration, CAS, Beijing, 100101, China.
- Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, 510632, China.
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing, 100069, China.
| |
Collapse
|
16
|
Binsker U, Kohler TP, Hammerschmidt S. Contribution of Human Thrombospondin-1 to the Pathogenesis of Gram-Positive Bacteria. J Innate Immun 2019; 11:303-315. [PMID: 30814475 PMCID: PMC6738282 DOI: 10.1159/000496033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 12/03/2018] [Indexed: 12/12/2022] Open
Abstract
A successful colonization of different compartments of the human host requires multifactorial contacts between bacterial surface proteins and host factors. Extracellular matrix proteins and matricellular proteins such as thrombospondin-1 play a pivotal role as adhesive substrates to ensure a strong interaction with pathobionts like the Gram-positive Streptococcus pneumoniae and Staphylococcus aureus. The human glycoprotein thrombospondin-1 is a component of the extracellular matrix and is highly abundant in the bloodstream during bacteremia. Human platelets secrete thrombospondin-1, which is then acquired by invading pathogens to facilitate colonization and immune evasion. Gram-positive bacteria express a broad spectrum of surface-exposed proteins, some of which also recognize thrombospondin-1. This review highlights the importance of thrombospondin-1 as an adhesion substrate to facilitate colonization, and we summarize the variety of thrombospondin-1-binding proteins of S. pneumoniae and S. aureus.
Collapse
Affiliation(s)
- Ulrike Binsker
- Center for Functional Genomics of Microbes, Department of Molecular Genetics and Infection Biology, Interfaculty Institute for Genetics and Functional Genomics, Greifswald University, Greifswald, Germany
- Department of Microbiology, NYU Langone Health, Alexandria Center for the Life Sciences, New York City, New York, USA
| | - Thomas P Kohler
- Center for Functional Genomics of Microbes, Department of Molecular Genetics and Infection Biology, Interfaculty Institute for Genetics and Functional Genomics, Greifswald University, Greifswald, Germany
| | - Sven Hammerschmidt
- Center for Functional Genomics of Microbes, Department of Molecular Genetics and Infection Biology, Interfaculty Institute for Genetics and Functional Genomics, Greifswald University, Greifswald, Germany,
| |
Collapse
|
17
|
Memetimin H, Li D, Tan K, Zhou C, Liang Y, Wu Y, Wang S. Myeloid-specific deletion of thrombospondin 1 protects against inflammation and insulin resistance in long-term diet-induced obese male mice. Am J Physiol Endocrinol Metab 2018; 315:E1194-E1203. [PMID: 30351986 PMCID: PMC6336956 DOI: 10.1152/ajpendo.00273.2018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 10/17/2018] [Accepted: 10/17/2018] [Indexed: 12/17/2022]
Abstract
Thrombospondin 1 (TSP1) is a multifunctional matricellular protein. Recent studies demonstrate that TSP1 is highly expressed in adipose tissue (AT) and positively associated with AT inflammation and insulin resistance (IR). In this study, the contribution of different cellular sources of TSP1 to obesity-induced metabolic complications is determined by using mice with either adipocyte or myeloid/macrophage-specific deletion of TSP1 in a diet-induced obese model. The results demonstrated that neither adipocyte nor myeloid/macrophage-specific deletion of TSP1 affected the development of long-term high-fat diet-induced obesity. Adipocyte-specific deletion of TSP1 did not protect mice from obesity-induced inflammation and IR. On the contrary, obese mice with myeloid/macrophage loss of TSP1 had reduced macrophage accumulation in AT, which was accompanied with reduced inflammation and improved glucose tolerance and insulin sensitivity compared with obese control mice. Reduced macrophage-derived-TGF-β1 signaling and adipose tissue fibrosis were also observed in long-term high-fat-fed mice with myeloid/macrophage-specific TSP1 deletion. Moreover, in vitro experiments demonstrated an autocrine effect of TSP1-mediated TGF-β activation in macrophages in obesity. Collectively this study highlights the critical contribution of myeloid/macrophage-derived TSP1 to obesity-associated chronic inflammation and IR, which may serve as a new therapeutic target for metabolic disease.
Collapse
Affiliation(s)
- Hasiyet Memetimin
- Department of Pharmacology and Nutritional Sciences, University of Kentucky , Lexington, Kentucky
| | - Dong Li
- Department of Pharmacology and Nutritional Sciences, University of Kentucky , Lexington, Kentucky
| | - Kaiyuan Tan
- Department of Pharmacology and Nutritional Sciences, University of Kentucky , Lexington, Kentucky
| | - Changcheng Zhou
- Department of Pharmacology and Nutritional Sciences, University of Kentucky , Lexington, Kentucky
| | - Ying Liang
- Department of Toxicology and Cancer Biology, University of Kentucky , Lexington, Kentucky
| | - Yadi Wu
- Department of Pharmacology and Nutritional Sciences, University of Kentucky , Lexington, Kentucky
| | - Shuxia Wang
- Department of Pharmacology and Nutritional Sciences, University of Kentucky , Lexington, Kentucky
| |
Collapse
|
18
|
Thrombospondin-1 Production Regulates the Inflammatory Cytokine Secretion in THP-1 Cells Through NF-κB Signaling Pathway. Inflammation 2018. [PMID: 28634844 DOI: 10.1007/s10753-017-0601-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Thrombospondin-1 (TSP-1) is upregulated in several inflammatory diseases. Recent data have shown that macrophages from TSP-1-deficient mice have a reduced inflammatory phenotype, suggesting that TSP-1 plays a part in macrophage activation. DNA microarray approach revealed that Porphyromonas gingivalis lipopolysaccharide (P. gingivalis LPS) may induce the enhanced TSP-1 expression in human monocytes, suggesting a role of TSP-1-mediated pathogenesis in periodontitis. Until recently, the function of TSP-1 has been a matter of debate. In this study, we explored the role of TSP-1 in inflammatory cytokine secretions and its putative mechanism in pathogenesis of periodontitis. We demonstrated that TSP-1 expression was significantly upregulated in gingival tissues with periodontitis and in P. gingivalis LPS-stimulated THP-1 cells. Deficiency of TSP-1 by transfecting siRNAs decreased IL-6, IL-1β, and TNF-α secretions in THP-1 cells, whereas overexpression of TSP-1 resulted in an upregulation of IL-6, IL-1β, and TNF-α productions. Additional experiments showed that Pyrrolidine dithiocarbamate (PDTC) inhibited IL-6, IL-1β, and TNF-α expression induced by overexpression of TSP-1, accompanying with downregulation of phosphorylated p65 and IκBα protein levels in response to P. gingivalis LPS. These results indicated that TSP-1 played a significant role in P. gingivalis LPS-initiated inflammatory cytokines (IL-6, IL-1β, and TNF-α) secretions of THP-1 cells, and the NF-κB signaling is involved in its induction of expression. Thus, TSP-1 effectively elevated P. gingivalis LPS-induced inflammation mediated by the NF-κB pathway and may be critical for pathology of periodontitis.
Collapse
|
19
|
The Roles of Thrombospondins in Hemorrhagic Stroke. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8403184. [PMID: 29214179 PMCID: PMC5682909 DOI: 10.1155/2017/8403184] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 05/07/2017] [Accepted: 09/26/2017] [Indexed: 12/13/2022]
Abstract
Hemorrhagic stroke is a devastating cerebrovascular disease with significant morbidity and mortality worldwide. Thrombospondins (TSPs), as matricellular proteins, belong to the TSP family which is comprised of five members. All TSPs modulate a variety of cellular functions by binding to various receptors. Recently, TSPs gained attention in the area of hemorrhagic stroke, especially TSP-1. TSP-1 participates in angiogenesis, the inflammatory response, apoptosis, and fibrosis after hemorrhagic stroke through binding to various molecules including but not limited to CD36, CD47, and TGF-β. In this review, we will discuss the roles of TSPs in hemorrhagic stroke and focus primarily on TSP-1.
Collapse
|
20
|
Roberts DD, Kaur S, Isenberg JS. Regulation of Cellular Redox Signaling by Matricellular Proteins in Vascular Biology, Immunology, and Cancer. Antioxid Redox Signal 2017; 27:874-911. [PMID: 28712304 PMCID: PMC5653149 DOI: 10.1089/ars.2017.7140] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/11/2017] [Accepted: 07/13/2017] [Indexed: 12/15/2022]
Abstract
SIGNIFICANCE In contrast to structural elements of the extracellular matrix, matricellular proteins appear transiently during development and injury responses, but their sustained expression can contribute to chronic disease. Through interactions with other matrix components and specific cell surface receptors, matricellular proteins regulate multiple signaling pathways, including those mediated by reactive oxygen and nitrogen species and H2S. Dysregulation of matricellular proteins contributes to the pathogenesis of vascular diseases and cancer. Defining the molecular mechanisms and receptors involved is revealing new therapeutic opportunities. Recent Advances: Thrombospondin-1 (TSP1) regulates NO, H2S, and superoxide production and signaling in several cell types. The TSP1 receptor CD47 plays a central role in inhibition of NO signaling, but other TSP1 receptors also modulate redox signaling. The matricellular protein CCN1 engages some of the same receptors to regulate redox signaling, and ADAMTS1 regulates NO signaling in Marfan syndrome. In addition to mediating matricellular protein signaling, redox signaling is emerging as an important pathway that controls the expression of several matricellular proteins. CRITICAL ISSUES Redox signaling remains unexplored for many matricellular proteins. Their interactions with multiple cellular receptors remains an obstacle to defining signaling mechanisms, but improved transgenic models could overcome this barrier. FUTURE DIRECTIONS Therapeutics targeting the TSP1 receptor CD47 may have beneficial effects for treating cardiovascular disease and cancer and have recently entered clinical trials. Biomarkers are needed to assess their effects on redox signaling in patients and to evaluate how these contribute to their therapeutic efficacy and potential side effects. Antioxid. Redox Signal. 27, 874-911.
Collapse
Affiliation(s)
- David D. Roberts
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Sukhbir Kaur
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Jeffrey S. Isenberg
- Division of Pulmonary, Allergy and Critical Care, Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| |
Collapse
|
21
|
Nebbioso M, Buomprisco G, Pascarella A, Pescosolido N. Modulatory effects of 1,25-dihydroxyvitamin D3 on eye disorders: A critical review. Crit Rev Food Sci Nutr 2017; 57:559-565. [PMID: 26054653 DOI: 10.1080/10408398.2014.893504] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Many studies have shown that the presence of 1,25-dihydroxyvitamin D3 in the eye is able to modulate inflammatory responses. In fact, it has been demonstrated that topical administration of vitamin D3 inhibits Langerhans cells migration from the central cornea, corneal neovascularization, and production of cytokines (i.e., interleukin-1-6-8) in experimental animals. Moreover, both in vitro and in vivo studies have demonstrated that vitamin D is a potent inhibitor of retinal neovascularization. It has been shown that calcitriol, the biologically active form of vitamin D, inhibits angiogenesis both in cultured endothelial cells and in retinas from guinea pigs with retinoblastoma or oxygen-induced ischemic retinopathy. In addition, it seems that this compound is able to prevent the progression from early to neovascular age-related macular degeneration (AMD) and, at the same time, to down-regulate the characteristic inflammatory cascade at the retinal pigment epithelium-choroid interface due to its anti-inflammatory and immunomodulatory capabilities. Furthermore, 1,25-dihydroxyvitamin D3 and its analogue, 2-methylene-19-nor-1,25-dihydroxyvitamin D3, are able to modulate intraocular pressure (IOP) through gene expression. Several studies have suggested a role in glaucoma and diabetic retinopathy therapies for vitamin D3. In conclusion, this review summarizes our current knowledge on the potential use of vitamin D3 in the protection and treatment of ocular diseases in ophthalmology.
Collapse
Affiliation(s)
- Marcella Nebbioso
- a Department of Sense Organs , Sapienza University of Rome , Rome , Italy
| | | | - Antonia Pascarella
- b Department of Biology and Biotechnology Charles Darwin , Sapienza University of Rome , Rome , Italy
| | - Nicola Pescosolido
- c Department of Cardiologic, Respiratory, Nephrologic, Anesthesiologic and Geriatric Sciences , Sapienza University of Rome , Rome , Italy
| |
Collapse
|
22
|
Binsker U, Kohler TP, Krauel K, Kohler S, Habermeyer J, Schwertz H, Hammerschmidt S. Serotype 3 pneumococci sequester platelet-derived human thrombospondin-1 via the adhesin and immune evasion protein Hic. J Biol Chem 2017; 292:5770-5783. [PMID: 28209711 DOI: 10.1074/jbc.m116.760504] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 02/15/2017] [Indexed: 11/06/2022] Open
Abstract
Streptococcus pneumoniae serotype 3 strains emerge frequently within clinical isolates of invasive diseases. Bacterial invasion into deeper tissues is associated with colonization and immune evasion mechanisms. Thus, pneumococci express a versatile repertoire of surface proteins sequestering and interacting specifically with components of the human extracellular matrix and serum. Hic, a PspC-like pneumococcal surface protein, possesses vitronectin and factor H binding activity. Here, we show that heterologously expressed Hic domains interact, similar to the classical PspC molecule, with human matricellular thrombospondin-1 (hTSP-1). Binding studies with isolated human thrombospondin-1 and various Hic domains suggest that the interaction between hTSP-1 and Hic differs from binding to vitronectin and factor H. Binding of Hic to hTSP-1 is inhibited by heparin and chondroitin sulfate A, indicating binding to the N-terminal globular domain or type I repeats of hTSP-1. Competitive inhibition experiments with other pneumococcal hTSP-1 adhesins demonstrated that PspC and PspC-like Hic recognize similar domains, whereas PavB and Hic can bind simultaneously to hTSP-1. In conclusion, Hic binds specifically hTSP-1; however, truncation in the N-terminal part of Hic decreases the binding activity, suggesting that the full length of the α-helical regions of Hic is required for an optimal interaction.
Collapse
Affiliation(s)
- Ulrike Binsker
- From the Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, D-17487 Greifswald, Germany and
| | - Thomas P Kohler
- From the Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, D-17487 Greifswald, Germany and
| | - Krystin Krauel
- the Institute for Immunology and Transfusion Medicine, University Medicine Greifswald, D-17489 Greifswald, Germany
| | - Sylvia Kohler
- From the Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, D-17487 Greifswald, Germany and
| | - Johanna Habermeyer
- From the Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, D-17487 Greifswald, Germany and
| | - Hansjörg Schwertz
- the Institute for Immunology and Transfusion Medicine, University Medicine Greifswald, D-17489 Greifswald, Germany
| | - Sven Hammerschmidt
- From the Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, D-17487 Greifswald, Germany and
| |
Collapse
|
23
|
Buda V, Andor M, Petrescu L, Cristescu C, Baibata DE, Voicu M, Munteanu M, Citu I, Muntean C, Cretu O, Tomescu MC. Perindopril Induces TSP-1 Expression in Hypertensive Patients with Endothelial Dysfunction in Chronic Treatment. Int J Mol Sci 2017; 18:ijms18020348. [PMID: 28178210 PMCID: PMC5343883 DOI: 10.3390/ijms18020348] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/12/2017] [Accepted: 01/30/2017] [Indexed: 02/06/2023] Open
Abstract
Thrombospondin-1 (TSP-1) is a potent endogenous inhibitor of both physiological and pathological angiogenesis, widely studied as a target in drug development for treating cancer. Several studies performed in the cardiovascular field on TSP-1 are contradictory, the role of TSP-1 in the physiopathology of cardiovascular disorders (CVDs) being, for the moment, incompletely understood and may be due to the presence of several domains in its structure which can stimulate many cellular receptors. It has been reported to inhibit NO-mediated signaling and to act on the angiogenesis, tissue perfusion, endothelial cell proliferation, and homeostasis, so we aimed to quantify the effect Perindopril has on TSP-1 plasma levels in hypertensive patients with endothelial dysfunction in comparison with other antihypertensive drugs, such as beta blockers, calcium channel blockers, and diuretics, in a chronic treatment. As a conclusion, patients under treatment with Perindopril had increased plasma levels of TSP-1 compared with other hypertensive patients and with the control group. The results of this study confirms the pleiotropic properties of Perindopril: anti-proliferative, anti-inflammatory, with effects showed by quantifying a single biomarker: TSP-1.
Collapse
Affiliation(s)
- Valentina Buda
- Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Minodora Andor
- Faculty of Medicine, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Lucian Petrescu
- Faculty of Medicine, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Carmen Cristescu
- Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Dana Emilia Baibata
- Faculty of Medicine, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Mirela Voicu
- Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Melania Munteanu
- Faculty of Pharmacy, VasileGoldis Western University, 86 LiviuRebreanu, 310045 Arad, Romania.
| | - Ioana Citu
- Faculty of Medicine, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Calin Muntean
- Faculty of Medicine, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Octavian Cretu
- Faculty of Medicine, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| | - Mirela Cleopatra Tomescu
- Faculty of Medicine, Victor Babeş University of Medicine and Pharmacy, 2 EftimieMurgu, 300041 Timisoara, Romania.
| |
Collapse
|
24
|
Gutiérrez JM, Escalante T, Rucavado A, Herrera C, Fox JW. A Comprehensive View of the Structural and Functional Alterations of Extracellular Matrix by Snake Venom Metalloproteinases (SVMPs): Novel Perspectives on the Pathophysiology of Envenoming. Toxins (Basel) 2016; 8:toxins8100304. [PMID: 27782073 PMCID: PMC5086664 DOI: 10.3390/toxins8100304] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 10/14/2016] [Indexed: 12/22/2022] Open
Abstract
Snake venom metalloproteinases (SVMPs) affect the extracellular matrix (ECM) in multiple and complex ways. Previously, the combination of various methodological platforms, including electron microscopy, histochemistry, immunohistochemistry, and Western blot, has allowed a partial understanding of such complex pathology. In recent years, the proteomics analysis of exudates collected in the vicinity of tissues affected by SVMPs has provided novel and exciting information on SVMP-induced ECM alterations. The presence of fragments of an array of ECM proteins, including those of the basement membrane, has revealed a complex pathological scenario caused by the direct action of SVMPs. In addition, the time-course analysis of these changes has underscored that degradation of some fibrillar collagens is likely to depend on the action of endogenous proteinases, such as matrix metalloproteinases (MMPs), synthesized as a consequence of the inflammatory process. The action of SVMPs on the ECM also results in the release of ECM-derived biologically-active peptides that exert diverse actions in the tissue, some of which might be associated with reparative events or with further tissue damage. The study of the effects of SVMP on the ECM is an open field of research which may bring a renewed understanding of snake venom-induced pathology.
Collapse
Affiliation(s)
- José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José 11501-2060, Costa Rica.
| | - Teresa Escalante
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José 11501-2060, Costa Rica.
| | - Alexandra Rucavado
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José 11501-2060, Costa Rica.
| | - Cristina Herrera
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José 11501-2060, Costa Rica.
- Facultad de Farmacia, Universidad de Costa Rica, San José 11501-2060, Costa Rica.
| | - Jay W Fox
- School of Medicine, University of Virginia, Charlottesville, VA 22959, USA.
| |
Collapse
|
25
|
Cointe S, Rhéaume É, Martel C, Blanc-Brude O, Dubé E, Sabatier F, Dignat-George F, Tardif JC, Bonnefoy A. Thrombospondin-1-Derived Peptide RFYVVMWK Improves the Adhesive Phenotype of CD34 + Cells From Atherosclerotic Patients With Type 2 Diabetes. Cell Transplant 2016; 26:327-337. [PMID: 27938493 DOI: 10.3727/096368916x693329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
CD34+ progenitor cells are growing in use for vascular repair. However, in diabetic individuals with cardiovascular diseases, these cells have dysfunctional engraftment capabilities, which compromise their use for autologous cell therapy. The thrombospondin-1-derived peptide RFYVVMWK has previously been reported to stimulate cell adhesiveness through CD47 and integrin activation pathways. Our aim was to test whether RFYVVMWK preconditioning could modulate CD34+ cell phenotype and enhance its proadhesive properties in diabetic patients. Peripheral blood mononuclear CD34+ cells isolated from 40 atherosclerotic patients with type 2 diabetes (T2D; n = 20) or without (non-T2D; n = 20) were preconditioned with 30 μM RFYVVMWK or truncated peptide RFYVVM. CD34+ cell adhesion was assessed on a vitronectin-collagen matrix and on TNF-α or IL-1β-stimulated HUVEC monolayers. Adhesion receptors, platelet/CD34+ cell conjugates, and cell viability were analyzed by flow cytometry and confocal microscopy. RFYVVMWK increased the adhesion of T2D CD34+ cells by eightfold to the vitronectin-collagen matrix (p < 0.001) corresponding to a threefold increase compared to unstimulated non-T2D CD34+ cells. The peptide induced the formation of platelet/CD34+ conjugates and increased the expression of TSP-1, CD29, CD51/CD61, and CD62P in both T2D and non-T2D cells. However, RFYVVMWK treatment did not affect the viability/apoptosis of CD34+ progenitor cells. In conclusion, priming CD34+ cells with RFYVVMWK may enhance their vascular engraftment during autologous proangiogenic cell therapy.
Collapse
|
26
|
Wang JL, Jin GL, Yuan ZG, Yu XB, Li JQ, Qiu TL, Dai RX. Plasma thrombospondin-1 and clinical outcomes in traumatic brain injury. Acta Neurol Scand 2016; 134:189-96. [PMID: 26521864 DOI: 10.1111/ane.12528] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2015] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Thrombospondin-1 (TSP-1) acts as an anti-angiogenic factor, and its expression in rat brain is upregulated after intracerebral hemorrhage. The current study was designed to investigate the change of plasma TSP-1 levels and assess the prognostic predictive effect of plasma TSP-1 level and it is associated with head trauma severity in the patients with severe traumatic brain injury (STBI). MATERIALS AND METHODS The plasma TSP-1 levels of 134 patients and 134 healthy controls were measured using enzyme-linked immunosorbent assay. The relationships between plasma TSP-1 levels and trauma severity reflected by Glasgow Coma Scale (GCS) scores as well as between plasma TSP-1 levels and short-term and long-term clinical outcomes were analyzed using multivariate analysis. RESULTS Plasma TSP-1 levels were statistically significantly higher in patients than in healthy controls. The multivariate analysis demonstrated close association of TSP-1 with GCS scores and also identified TSP-1 as an independent predictor for 1-week mortality, 6-month mortality, and 6-month unfavorable outcome. Plasma TSP-1 levels had high prognostic predictive value based on receiver operating characteristic curve. The difference between its prognostic predictive value and GCS scores was not statistically significant. CONCLUSIONS Plasma TSP-1 levels are elevated and are highly associated with head trauma severity and short-term and long-term outcomes of STBI. TSP-1 may be a good prognostic biomarker of STBI.
Collapse
Affiliation(s)
- J.-L. Wang
- Department of Neurosurgery; Shaoxing People's Hospital; Shaoxing Hospital of Zhejiang University; Shaoxing Zhejiang Province China
| | - G.-L. Jin
- Department of Neurosurgery; Shaoxing People's Hospital; Shaoxing Hospital of Zhejiang University; Shaoxing Zhejiang Province China
| | - Z.-G. Yuan
- Department of Neurosurgery; Shaoxing People's Hospital; Shaoxing Hospital of Zhejiang University; Shaoxing Zhejiang Province China
| | - X.-B. Yu
- Department of Neurosurgery; Shaoxing People's Hospital; Shaoxing Hospital of Zhejiang University; Shaoxing Zhejiang Province China
| | - J.-Q. Li
- Department of Neurosurgery; Shaoxing People's Hospital; Shaoxing Hospital of Zhejiang University; Shaoxing Zhejiang Province China
| | - T.-L. Qiu
- Department of Neurosurgery; Shaoxing People's Hospital; Shaoxing Hospital of Zhejiang University; Shaoxing Zhejiang Province China
| | - R.-X. Dai
- Department of Neurosurgery; Shaoxing People's Hospital; Shaoxing Hospital of Zhejiang University; Shaoxing Zhejiang Province China
| |
Collapse
|
27
|
|
28
|
Role of smooth muscle Nox4-based NADPH oxidase in neointimal hyperplasia. J Mol Cell Cardiol 2015; 89:185-94. [PMID: 26582463 DOI: 10.1016/j.yjmcc.2015.11.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 10/26/2015] [Accepted: 11/11/2015] [Indexed: 11/21/2022]
Abstract
UNLABELLED Elevated levels of reactive oxygen species (ROS) in the vascular wall play a key role in the development of neointimal hyperplasia. Nox4-based NADPH oxidase is a major ROS generating enzyme in the vasculature, but its roles in neointimal hyperplasia remain unclear. OBJECTIVE Our purpose was to investigate the role of smooth muscle cell (SMC) Nox4 in neointimal hyperplasia. APPROACH AND RESULTS Mice overexpressing a human Nox4 mutant form, carrying a P437H dominant negative mutation (Nox4DN) and driven by SM22α promoter, to achieve specific expression in SMC, were generated in a FVB/N genetic background. After wire injury-induced endothelial denudation, Nox4DN had significantly decreased neointima formation compared with non-transgenic littermate controls (NTg). ROS production, serum-induced proliferation and migration, were significantly decreased in aortic SMCs isolated from Nox4DN compared with NTg. Both mRNA and protein levels of thrombospondin 1 (TSP1) were significantly downregulated in Nox4DN SMCs. Downregulation of TSP1 by siRNA decreased cell proliferation and migration in SMCs. Similar to Nox4DN, downregulation of Nox4 by siRNA significantly decreased TSP1 expression level, cell proliferation and migration in SMCs. CONCLUSIONS Downregulation of smooth muscle Nox4 inhibits neointimal hyperplasia by suppressing TSP1, which in part can account for inhibition of SMC proliferation and migration.
Collapse
|
29
|
Starlinger P, Assinger A, Gruenberger T, Brostjan C. The role of platelets and portal venous pressure fluctuations in postoperative liver regeneration. Eur Surg 2015. [DOI: 10.1007/s10353-015-0352-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
30
|
Gao JB, Tang WD, Wang HX, Xu Y. Predictive value of thrombospondin-1 for outcomes in patients with acute ischemic stroke. Clin Chim Acta 2015; 450:176-80. [PMID: 26296896 DOI: 10.1016/j.cca.2015.08.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 07/30/2015] [Accepted: 08/17/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Thrombospondin-1 is a potent regulator of angiogenesis. The expression of cerebral thrombospondin-1 is promoted in a rat model of intracerebral hemorrhage. The current study was designed to investigate the change of plasma thrombospondin-1 concentrations and assess the prognostic value of plasma thrombospondin-1 concentrations for long-term mortality and functional outcome of ischemic stroke patients. METHODS This study included 192 patients and 150 healthy controls. The plasma thrombospondin-1 concentrations were measured using enzyme-linked immunosorbent assay. An unfavorable outcome was defined as a modified Rankin Scale score >3. The relationships between plasma thrombospondin-1 concentrations and 6-month clinical outcomes were analyzed using multivariate analysis. RESULTS Compared with healthy controls, plasma thrombospondin-1 concentrations were statistically significantly elevated in patients. Using multivariate analysis, thrombospondin-1 emerged as an independent predictor for 6-month mortality, 6-month unfavorable outcome and 6-month overall survival. Plasma thrombospondin-1 concentrations possessed high predictive values under receiver operating characteristic curve. Their predictive values were similar to those of National Institutes of Health Stroke Scale scores. CONCLUSIONS Plasma thrombospondin-1 concentrations are elevated obviously and are highly associated with long-term outcome of ischemic stroke.
Collapse
Affiliation(s)
- Jian-Bo Gao
- Department of Emergency Medicine, Fuyang People's Hospital, 2-4 Guihua Road, Fuyang 311400, Zhejiang Province, China.
| | - Wei-Dong Tang
- Department of Critical Care Medicine, Fuyang People's Hospital, 2-4 Guihua Road, Fuyang 311400, Zhejiang Province, China
| | - Hong-Xiang Wang
- Department of Neurology, Fuyang People's Hospital, 2-4 Guihua Road, Fuyang 311400, Zhejiang Province, China
| | - Yan Xu
- Department of Neurology, Fuyang People's Hospital, 2-4 Guihua Road, Fuyang 311400, Zhejiang Province, China
| |
Collapse
|
31
|
Shen YF, Wang WH, Yu WH, Dong XQ, Du Q, Yang DB, Wang H, Jiang L, Du YF, Zhang ZY, Zhu Q, Che ZH, Liu QJ. The prognostic value of plasma thrombospondin-1 concentrations after aneurysmal subarachnoid hemorrhage. Clin Chim Acta 2015; 448:155-60. [DOI: 10.1016/j.cca.2015.06.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 05/30/2015] [Accepted: 06/24/2015] [Indexed: 02/07/2023]
|
32
|
Muppala S, Frolova E, Xiao R, Krukovets I, Yoon S, Hoppe G, Vasanji A, Plow E, Stenina-Adognravi O. Proangiogenic Properties of Thrombospondin-4. Arterioscler Thromb Vasc Biol 2015; 35:1975-86. [PMID: 26139464 DOI: 10.1161/atvbaha.115.305912] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 06/22/2015] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Thrombospondin-4 (TSP-4) is 1 of the 5 members of the thrombospondin protein family. TSP-1 and TSP-2 are potent antiangiogenic proteins. However, angiogenic properties of the 3 other TSPs, which do not contain the domains associated with the antiangiogeneic activity of TSP-1 and TSP-2, have not been explored. In our previous studies, we found that TSP-4 is expressed in the vascular matrix of blood vessels of various sizes and is especially abundant in capillaries. We sought to identify the function of TSP-4 in the regulation of angiogenesis. APPROACH AND RESULTS The effect of TSP-4 in in vivo angiogenesis models and its effect on angiogenesis-related properties in cultured cells were assessed using Thbs4(-/-) mice, endothelial cells (EC) derived from these mice, and recombinant TSP-4. Angiogenesis was decreased in Thbs4(-/-) mice compared with wild-type mice. TSP-4 was detected in the lumen of the growing blood vessels. Mice expressing the P387 TSP-4 variant, which was previously associated with coronary artery disease and found to be more active in its cellular interactions, displayed greater angiogenesis compared with A387 form. Lung EC from Thbs4(-/-) mice exhibited decreased adhesion, migration, and proliferation capacities compared with EC from wild-type mice. Recombinant TSP-4 promoted proliferation and the migration of EC. Integrin α2 and gabapentin receptor α2δ-1 were identified as receptors involved in regulation of EC adhesion, migration, and proliferation by TSP-4. CONCLUSION TSP-4, an extracellular matrix protein previously associated with tissue remodeling, is now demonstrated to possess proangiogenic activity.
Collapse
Affiliation(s)
- Santoshi Muppala
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Ella Frolova
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Roy Xiao
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Irene Krukovets
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Suzy Yoon
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - George Hoppe
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Amit Vasanji
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Edward Plow
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Olga Stenina-Adognravi
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.).
| |
Collapse
|
33
|
Cartilage oligomeric matrix protein is a natural inhibitor of thrombin. Blood 2015; 126:905-14. [PMID: 26045608 DOI: 10.1182/blood-2015-01-621292] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 06/02/2015] [Indexed: 12/29/2022] Open
Abstract
Thrombin is an effector enzyme for hemostasis and thrombosis; however, endogenous regulators of thrombin remain elusive. Cartilage oligomeric matrix protein (COMP), a matricellular protein also known as thrombospondin-5, is essential for maintaining vascular homeostasis. Here, we asked whether COMP is involved in the process of blood coagulation. COMP deficiency shortened tail-bleeding and clotting time and accelerated ferric-chloride-induced thrombosis in mice. The absence of COMP had no effect on platelet count. In contrast, COMP specifically inhibited thrombin-induced platelet aggregation, activation, and retraction and the thrombin-mediated cleavage of fibrinogen. Furthermore, surface plasmon resonance analysis revealed direct thrombin-COMP binding (KD = 1.38 ± 0.24 μM). In particular, blockage of thrombin exosites with compounds specific for exosite I (hirudin and HD1 aptamer) or exosite II (heparin and HD22 aptamer) impaired the COMP-thrombin interaction, indicating a 2-site binding mechanism. Additionally, epidermal growth factor-like repeats (amino acids 84-261) were identified as a COMP binding site for thrombin. Moreover, COMP was expressed in and secreted by platelets. Using bone marrow transplantation and platelet transfusion to create chimeric mice, platelet-derived but not vessel-wall-derived COMP was demonstrated to inhibit coagulation. Taken together, COMP is an endogenous thrombin inhibitor and negative regulator of hemostasis and thrombosis.
Collapse
|
34
|
Starlinger P, Haegele S, Wanek D, Zikeli S, Schauer D, Alidzanovic L, Fleischmann E, Gruenberger B, Gruenberger T, Brostjan C. Plasma thrombospondin 1 as a predictor of postoperative liver dysfunction. Br J Surg 2015; 102:826-36. [PMID: 25871570 DOI: 10.1002/bjs.9814] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 02/15/2015] [Accepted: 02/26/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND Liver regeneration following liver resection involves a complex interplay of growth factors and their antagonists. Thrombospondin 1 has recently been identified as a critical inhibitor of liver regeneration by the activation of transforming growth factor β1 in mice, and preliminary data seem to confirm its relevance in humans. This study aimed to confirm these observations in an independent validation cohort. METHODS Perioperative circulating levels of thrombospondin 1 were measured in patients undergoing liver resection between January 2012 and September 2013. Postoperative liver dysfunction was defined according to the International Study Group of Liver Surgery and classification of morbidity was based on the criteria by Dindo et al. RESULTS In 85 patients (44 major and 41 minor liver resections), plasma levels of thrombospondin 1 increased 1 day after liver resection (mean 51·6 ng/ml before surgery and 68·3 ng/ml on postoperative day 1; P = 0·001). Circulating thrombospondin 1 concentration on the first postoperative day specifically predicted liver dysfunction (area under the receiver operating characteristic (ROC) curve 0·818, P = 0·003) and was confirmed as a significant predictor in multivariable analysis (Exp(B) 1·020, 95 per cent c.i. 1·005 to 1·035; P = 0·009). Patients with a high thrombospondin 1 concentration (over 80 ng/ml) on postoperative day 1 more frequently had postoperative liver dysfunction than those with a lower level (28 versus 2 per cent) and severe morbidity (44 versus 15 per cent), and their length of hospital stay was more than doubled (19·7 versus 9·9 days). CONCLUSION Thrombospondin 1 may prove a helpful clinical marker to predict postoperative liver dysfunction as early as postoperative day 1.
Collapse
Affiliation(s)
- P Starlinger
- Departments of Surgery, General Hospital, Vienna, Austria
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Pfahler S, Distl O. Effective population size, extended linkage disequilibrium and signatures of selection in the rare dog breed lundehund. PLoS One 2015; 10:e0122680. [PMID: 25860808 PMCID: PMC4393028 DOI: 10.1371/journal.pone.0122680] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 02/24/2015] [Indexed: 12/29/2022] Open
Abstract
The Lundehund is an old dog breed with remarkable anatomical features including polydactyly in all four limbs and extraordinary flexibility of the spine. We genotyped 28 Lundehund using the canine Illumina high density beadchip to estimate the effective population size (Ne) and inbreeding coefficients as well as to identify potential regions of positive selection. The decay of linkage disequilibrium was slow with r2 = 0.95 in 50 kb distance. The last 7-200 generations ago, Ne was at 10-13. An increase of Ne was noted in the very recent generations with a peak value of 19 for Ne at generation 4. The FROH estimated for 50-, 65- and 358-SNP windows were 0.87, 087 and 0.81, respectively. The most likely estimates for FROH after removing identical-by-state segments due to linkage disequilibria were at 0.80-0.81. The extreme loss of heterozygosity has been accumulated through continued inbreeding over 200 generations within a probably closed population with a small effective population size. The mean inbreeding coefficient based on pedigree data for the last 11 generations (FPed = 0.10) was strongly biased downwards due to the unknown coancestry of the founders in this pedigree data. The long-range haplotype test identified regions with genes involved in processes of immunity, olfaction, woundhealing and neuronal development as potential targets of selection. The genes QSOX2, BMPR1B and PRRX2 as well as MYOM1 are candidates for selection on the Lundehund characteristics small body size, increased number of digits per paw and extraordinary mobility, respectively.
Collapse
Affiliation(s)
- Sophia Pfahler
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Bünteweg 17p, 30559 Hannover, Germany
| | - Ottmar Distl
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Bünteweg 17p, 30559 Hannover, Germany
- * E-mail:
| |
Collapse
|
36
|
Hagag AA, Elmashad G, Abd El-Lateef AE. Clinical significance of assessment of thrombospondin and placenta growth factor levels in patients with sickle cell anemia: two centers egyptian studies. Mediterr J Hematol Infect Dis 2014; 6:e2014044. [PMID: 25045452 PMCID: PMC4103513 DOI: 10.4084/mjhid.2014.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 06/20/2014] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Sickle cell disease has a worldwide distribution. Vaso-occlusive crisis (VOC) is one of the most important clinical features of the disease. Thrombospondin (TSP1) and Placenta growth factor (PlGF) have been reported to be involved in sickle cell diseases (SCD). OBJECTIVE The aim of this study was to assess the clinical significance of Thrombospondin and Placenta growth factor profiles in patients with sickle cell disease. PATIENTS AND METHODS This study was carried out in sixty patients with sickle cell anemia who were attendants to Hematology units, Pediatric Departments, Tanta and Elmenofia University Hospitals in the period between December 2011 and May 2014 including thirty patients during vaso-occlusive crisis and thirty patients out of crisis. Also this study included twenty healthy children of matched age and sex as a control group. Serum TSP1 and PlGF levels were analyzed by ELISA. RESULTS In SCA patients with crisis the mean serum Thrombospondin level was 902.5±280.89 ng/mL; in SCA patients out of crisis the mean serum Thrombospondin level was 462.5 ± 190.2 ng/mL and in controls the mean value was 236.66±58.29 ng/mL. In SCA patients with crisis the mean serum Placenta growth factor level was 19.97±1.28 pg/ml; in SCA patients out of crisis the mean serum Placenta growth factor level was 13.12 ± 1.82 pg/ml and in controls the mean value was 9.89 ± 1.20 pg/ml. All paired comparisons for Thrombospondin and Placenta growth factor reached statistical significance (P< 0.001). There was significant positive correlation between serum Thrombospondin and Placenta growth factor levels in sickle cell anemia patients during crisis (r=0.848, p=<0.001). CONCLUSIONS This is the first study to show TSP1and PlGF concentration changes in patients with SCD in a large cohort study from Middle East, and to show correlation between both markers; therefore TSP1and PlGF may be useful VOC markers in SCD patients. RECOMMENDATION To further assess TSP1 and PlGF as a marker of VOC in patients with SCD, further studies should be conducted to determine the exact point before VOC, when serum TSP1 and PIGF levels begin to increase. This requires monitoring of the TSP1 and PIGF levels in sickle cell patients out of crisis, showing how rapidly these levels increase just before VOC development.
Collapse
Affiliation(s)
- Adel A Hagag
- Pediatrics Department, Faculty of Medicine, Tanta University, Egypt
| | - Ghada Elmashad
- Pediatric Department, Faculty of Medicine, Elmenofia University, Egypt
| | | |
Collapse
|
37
|
Abstract
PURPOSE OF REVIEW Thrombospondins (TSPs) are secreted extracellular matrix (ECM) proteins from TSP family, which consists of five homologous members. They share a complex domain structure and have numerous binding partners in ECM and multiple cell surface receptors. Information that has emerged over the past decade identifies TSPs as important mediators of cellular homeostasis, assigning new important roles in cardiovascular pathology to these proteins. RECENT FINDINGS Recent studies of the functions of TSP in the cardiovascular system, diabetes and aging, which placed several TSPs in a position of critical regulators, demonstrated the involvement of these proteins in practically every aspect of cardiovascular pathophysiology related to atherosclerosis: inflammation, immunity, leukocyte recruitment and function, function of vascular cells, angiogenesis, and responses to hypoxia, ischemia and hyperglycemia. TSPs are also critically important in the development and ultimate outcome of the complications associated with atherosclerosis--myocardial infarction, and heart hypertrophy and failure. Their expression and significance increase with age and with the progression of diabetes, two major contributors to the development of atherosclerosis and its complications. SUMMARY This overview of recent literature examines the latest information on the newfound functions of TSPs that emphasize the importance of ECM in cardiovascular homeostasis and pathology. The functions of TSPs in myocardium, vasculature, vascular complications of diabetes, aging and immunity are discussed.
Collapse
|
38
|
Krishna SM, Golledge J. The role of thrombospondin-1 in cardiovascular health and pathology. Int J Cardiol 2013; 168:692-706. [DOI: 10.1016/j.ijcard.2013.04.139] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 03/09/2013] [Accepted: 04/06/2013] [Indexed: 10/26/2022]
|
39
|
Duncan MB. Extracellular matrix transcriptome dynamics in hepatocellular carcinoma. Matrix Biol 2013; 32:393-8. [PMID: 23727079 DOI: 10.1016/j.matbio.2013.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/17/2013] [Accepted: 05/21/2013] [Indexed: 02/07/2023]
Abstract
The extracellular matrix undergoes extensive remodeling during hepatocellular carcinoma and functions as a critical component of the tumor microenvironment by providing a substratum for cell adhesion and serving as a reservoir for a variety of cytokines and growth factors. Despite the clinical correlation between ECM deposition and hepatocellular carcinoma progression, it remains unclear how global extracellular matrix gene expression is altered in hepatocellular carcinoma and the molecular pathways that govern this change. Herein, a comprehensive analysis of the extracellular matrix transcriptome using an RNA-sequencing dataset provided by The Cancer Genome Atlas consortium was conducted and indicates substantial differential gene expression of key extracellular matrix collagens, glycoproteins, and proteoglycans in hepatocellular carcinoma. This analysis also reveals alternative expression of extracellular matrix gene transcript variants that could impact biological activity and serves as a framework for exploring the dynamic nature of the extracellular matrix transcriptome in cancer and identifying candidate genes for future exploration.
Collapse
Affiliation(s)
- Michael B Duncan
- Section of Gastroenterology/Hepatology, Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States; Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912, United States.
| |
Collapse
|
40
|
Abstract
Hemostasis encompasses the tightly regulated processes of blood clotting, platelet activation, and vascular repair. After wounding, the hemostatic system engages a plethora of vascular and extravascular receptors that act in concert with blood components to seal off the damage inflicted to the vasculature and the surrounding tissue. The first important component that contributes to hemostasis is the coagulation system, while the second important component starts with platelet activation, which not only contributes to the hemostatic plug, but also accelerates the coagulation system. Eventually, coagulation and platelet activation are switched off by blood-borne inhibitors and proteolytic feedback loops. This review summarizes new concepts of activation of proteases that regulate coagulation and anticoagulation, to give rise to transient thrombin generation and fibrin clot formation. It further speculates on the (patho)physiological roles of intra- and extravascular receptors that operate in response to these proteases. Furthermore, this review provides a new framework for understanding how signaling and adhesive interactions between endothelial cells, leukocytes, and platelets can regulate thrombus formation and modulate the coagulation process. Now that the key molecular players of coagulation and platelet activation have become clear, and their complex interactions with the vessel wall have been mapped out, we can also better speculate on the causes of thrombosis-related angiopathies.
Collapse
Affiliation(s)
- Henri H. Versteeg
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - Johan W. M. Heemskerk
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - Marcel Levi
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - Pieter H. Reitsma
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
| |
Collapse
|
41
|
Ferroni P, Riondino S, Vazzana N, Santoro N, Guadagni F, Davì G. Biomarkers of platelet activation in acute coronary syndromes. Thromb Haemost 2012; 108:1109-23. [PMID: 23014768 DOI: 10.1160/th12-08-0550] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2012] [Accepted: 09/07/2012] [Indexed: 12/17/2022]
Abstract
The most convincing evidence for the participation of platelets in arterial thrombosis in humans comes from studies of platelet activation in patients with acute coronary syndromes (ACS) and from trials of antiplatelet drugs. Both strongly support the concept that repeated episodes of platelet activation over the thrombogenic surface of a vulnerable plaque may contribute to the risk of death from coronary causes. However, the relation of in vivo platelet activation and adverse clinical events to results of platelet function tests remains largely unknown. A valuable marker of in vivo platelet activation should be specific, unaltered by pre-analytical artefacts and reproducibly measured by easily performed methods. This article describes current biomarkers of platelet activation in ACS, reviews their advantages and disadvantages, discusses their potential pitfalls, and demonstrates emerging data supporting the positive clinical implications of monitoring in vivo platelet activation in the setting of ACS.
Collapse
Affiliation(s)
- Patrizia Ferroni
- Department of Advanced Biotechnologies and Bioimaging, IRCCS San Raffaele Pisana, Rome, Italy
| | | | | | | | | | | |
Collapse
|
42
|
Erythrocyte microparticles can induce kidney vaso-occlusions in a murine model of sickle cell disease. Blood 2012; 120:5050-8. [PMID: 22976952 DOI: 10.1182/blood-2012-02-413138] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Patients with sickle cell disease suffer from painful crises associated with disseminated vaso-occlusions, increased circulating erythrocyte microparticles (MPs), and thrombospondin-1 (TSP1). MPs are submicron membrane vesicles shed by compromised or activated cells. We hypothesized that TSP1 mediates MP shedding and participates in vaso-occlusions. We injected TSP1 to transgenic SAD mice with sickle cell disease and characterized circulating phosphatidylserine+ MPs by FACS. TSP1 stimulated MPs in plasma and initiated vaso-occlusions within minutes. In vitro, TSP1 triggered rapid erythrocyte conversion into spicule-covered echinocytes, followed by MP shedding. MP shedding was recapitulated by peptides derived from the TSP1 carboxyterminus. We purified MPs shed by erythrocytes in vitro and administered them back to SAD mice. MPs triggered immediate renal vaso-occlusions. In vitro, MPs triggered the production of radical oxygen species by endothelial monolayers, favored erythrocyte adhesion, and induced endothelial apoptosis. MPs also compromised vasodilation in perfused microvessels. These effects were inhibited by saturating MP phosphatidylserine with annexin-V, or with inhibitors of endothelial ROS production. We conclude that TSP1 triggers erythrocyte MP shedding. These MPs induce endothelial injury and facilitate acute vaso-occlusive events in transgenic SAD mice. This work supports a novel concept that toxic erythrocyte MPs may connect sickle cell anemia to vascular disease.
Collapse
|
43
|
Frolova EG, Sopko N, Blech L, Popović ZB, Li J, Vasanji A, Drumm C, Krukovets I, Jain MK, Penn MS, Plow EF, Stenina OI. Thrombospondin-4 regulates fibrosis and remodeling of the myocardium in response to pressure overload. FASEB J 2012; 26:2363-73. [PMID: 22362893 PMCID: PMC3360147 DOI: 10.1096/fj.11-190728] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 02/10/2012] [Indexed: 12/29/2022]
Abstract
Thrombospondin-4 (TSP-4) expression increases dramatically in hypertrophic and failing hearts in rodent models and in humans. The aim of this study was to address the function of TSP-4 in the heart. TSP-4-knockout (Thbs4(-/-)) and wild-type (WT) mice were subjected to transverse aortic constriction (TAC) to increase left ventricle load. After 2 wk, Thbs4(-/-) mice had a significantly higher heart weight/body weight ratio than WT mice. The additional increase in the heart weight in TAC Thbs4(-/-) mice was due to increased deposition of extracellular matrix (ECM). The levels of interstitial collagens were higher in the knockout mice, but the size of cardiomyocytes and apoptosis in the myocardium was unaffected by TSP-4 deficiency, suggesting that increased reactive fibrosis was the primary cause of the higher heart weight. The increased ECM deposition in Thbs4(-/-) mice was accompanied by changes in functional parameters of the heart and decreased vessel density. The expression of inflammatory and fibrotic genes known to be influential in myocardial remodeling changed as a result of TSP-4 deficiency in vivo and as a result of incubation of cells with recombinant TSP-4 in vitro. Thus, TSP-4 is involved in regulating the adaptive responses of the heart to pressure overload, suggesting its important role in myocardial remodeling. Our study showed a direct influence of TSP-4 on heart function and to identify the mechanism of its effects on heart remodeling.
Collapse
Affiliation(s)
- Ella G. Frolova
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | | | - Lauren Blech
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | | | - Jianbo Li
- Department of Quantitative Health Sciences
| | | | - Carla Drumm
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | - Irene Krukovets
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | - Mukesh K. Jain
- Case Cardiovascular Research Institute, Case Western Reserve University School of Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Edward F. Plow
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | - Olga I. Stenina
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| |
Collapse
|
44
|
Novelli EM, Kato GJ, Ragni MV, Zhang Y, Hildesheim ME, Nouraie M, Barge S, Meyer MP, Hassett AC, Gordeuk VR, Gladwin MT, Isenberg JS. Plasma thrombospondin-1 is increased during acute sickle cell vaso-occlusive events and associated with acute chest syndrome, hydroxyurea therapy, and lower hemolytic rates. Am J Hematol 2012; 87:326-30. [PMID: 22318901 PMCID: PMC3619659 DOI: 10.1002/ajh.22274] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2011] [Accepted: 12/06/2011] [Indexed: 01/05/2023]
Abstract
Platelets are activated in sickle cell disease (SCD), and particularly during vaso-occlusive episodes (VOE). Thrombospondin-1 (TSP1), a major secretory product of activated platelets, is increased in the circulation in VOE and binds to sickle red blood cells (RBC) promoting vascular adhesion. Thus, we hypothesized that TSP1 may represent a plasma biomarker of disease severity in SCD. We tested the plasma collected from patients in steady state (n = 27) and VOE (n = 14), as well as healthy controls (n = 17) at the University of Pittsburgh Medical Center (UPMC), and from patients in steady state enrolled in the walk-PHaSST clinical trial (n = 483). We found that TSP1 levels were increased in VOE in the UPMC cohort. Among steady-state patients at UPMC, TSP1 values correlated positively with lifetime history of acute chest syndrome (r = 0.72, P < 0.0001) and hemoglobin concentration (r = 0.49, P = 0.01), and negatively with markers of hemolysis, such as LDH (r = -0.50, P = 0.009). Analysis of the walk-PHaSST cohort also showed a positive association between TSP1 levels and hydroxyurea use (r = 0.14, P = 0.003), and confirmed the negative associations with the severity of hemolysis. Our results suggest that TSP1 levels are associated with more VOE, hydroxyurea use and lower rates of hemolysis. High TSP1 concentrations may indicate higher risk of the viscosity/vaso-occlusion phenotype of SCD.
Collapse
Affiliation(s)
- Enrico M Novelli
- Division of Hematology/Oncology, University of Pittsburgh Medical Center (UPMC), Vascular Medicine Institute (VMI), University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Wang HR, Chen DL, Zhao M, Shu SW, Xiong SX, Gan XD, Chao SP, Cao JL. C-reactive protein induces interleukin-6 and thrombospondin-1 protein and mRNA expression through activation of nuclear factor-ĸB in HK-2 cells. Kidney Blood Press Res 2012; 35:211-9. [PMID: 22223149 DOI: 10.1159/000332402] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Accepted: 08/28/2011] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Although C-reactive protein (CRP) is significantly increased in patients with diabetic nephropathy, whether CRP exerts direct proinflammatory effects on human renal tubular epithelial cells (HK-2 cells) is still unclear. METHODS HK-2 cells were incubated with purified CRP at clinically relevant concentrations (0, 5, 10, 20 and 40 μg/ml). The protein and transcript levels of thrombospondin-1 (TSP-1) and interleukin-6 (IL-6) were determined by ELISA and RT-PCR. Phosphorylation of p38MAPK was investigated through Western blot analysis in HK-2 cells induced by CRP. The activation of nuclear factor-kappa B (NF-κB) was studied via EMSA. A specific p38MAPK inhibitor (SB203580) and an NF-κB inhibitor (PDTC; pyrrolidine dithiocarbamate) were used to analyze the signal transduction in CRP induction. To explore the direct or indirect role of CRP in HK-2 cells, IL-6 or TSP-1 antibodies were used. The expression of IL-6, TSP-1 and transforming growth factor-β(1 )(TGF-β(1)) were determined through Western blot analysis in HK-2 cells. RESULTS In HK-2 cells, purified CRP significantly induced protein release and mRNA expression of IL-6 and TSP-1 in a dose- and time-dependent manner. TGF-β(1) protein was overexpressed in HK-2 cells induced by CRP, which cannot be inhibited by IL-6 or TSP-1 antibodies. CRP triggered phosphorylation of p38MAPK and activation of NF-κB-mediated signal transduction. SB203580 (5 μM) and PDTC (50 μM) efficiently suppressed those effects of CRP in HK-2 cells. CONCLUSIONS CRP induces IL-6 and TSP-1 protein release and mRNA expression from HK-2 cells via activation of the p38MAPK and NF-κB signaling pathways and TGF-β(1) was highly expressed in HK-2 cells, suggesting that CRP plays an important role in the propagation and prolongation of inflammation in renal fibrosis.
Collapse
Affiliation(s)
- Hai-rong Wang
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, People's Republic of China.
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Proteomic analysis of intra-arterial thrombus secretions reveals a negative association of clusterin and thrombospondin-1 with abdominal aortic aneurysm. Atherosclerosis 2011; 219:432-9. [DOI: 10.1016/j.atherosclerosis.2011.08.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 07/01/2011] [Accepted: 08/07/2011] [Indexed: 11/18/2022]
|
47
|
Stenczer B, Molvarec A, Szabó G, Szarka A, Fügedi G, Szijártó J, Rigó J. Circulating levels of thrombospondin-1 are decreased in HELLP syndrome. Thromb Res 2011; 129:470-3. [PMID: 22035632 DOI: 10.1016/j.thromres.2011.09.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 09/26/2011] [Accepted: 09/30/2011] [Indexed: 10/15/2022]
Abstract
BACKGROUND Preeclampsia is characterised by an imbalance of circulating pro- and anti-angiogenic factors. The syndrome of haemolysis, elevated liver enzymes and low platelet count (HELLP) develops mostly on the ground of preeclampsia, and one of its important features is the severe disturbance of the coagulation system, intravascular coagulopathy. Thrombospondin-1 (TSP-1) is derived from the endothelium and platelets, and exerts potent pro-thrombotic and anti-angiogenic effects. Our aim was to determine, whether its circulating levels are altered in preeclampsia and in HELLP syndrome. METHODS We enrolled 45 pregnant women with early-, 43 with late-onset preeclampsia, 21 with HELLP-syndrome, 45 with uncomplicated pregnancy and 20 non-pregnant controls in our case-control study. TSP-1 levels were determined by enzyme-linked immunosorbent assay. RESULTS Circulating TSP-1 levels were lower in HELLP syndrome compared to all other study groups, while they were unaltered in preeclampsia compared to the control groups. There was a significant positive linear correlation between TSP-1 levels and platelet count in HELLP syndrome. In patients with more severe HELLP syndrome, TSP-1 levels were significantly lower compared to women suffering from a milder form of HELLP syndrome. CONCLUSIONS Circulating thrombospondin-1 levels are decreased in HELLP syndrome and they seem to reflect disease severity, lower levels representing a more severe state. Nevertheless, despite its potent anti-angiogenic effect, our results suggest that circulating TSP-1 does not play a significant role in the pathogenesis of preeclampsia.
Collapse
Affiliation(s)
- Balázs Stenczer
- First Department of Obstetrics and Gynecology, Semmelweis University, Budapest, Hungary.
| | | | | | | | | | | | | |
Collapse
|
48
|
Ramanathan S, Mazzalupo S, Boitano S, Montfort WR. Thrombospondin-1 and angiotensin II inhibit soluble guanylyl cyclase through an increase in intracellular calcium concentration. Biochemistry 2011; 50:7787-99. [PMID: 21823650 DOI: 10.1021/bi201060c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nitric oxide (NO) regulates cardiovascular hemostasis by binding to soluble guanylyl cyclase (sGC), leading to cGMP production, reduced cytosolic calcium concentration ([Ca(2+)](i)), and vasorelaxation. Thrombospondin-1 (TSP-1), a secreted matricellular protein, was recently discovered to inhibit NO signaling and sGC activity. Inhibition of sGC requires binding to cell-surface receptor CD47. Here, we show that a TSP-1 C-terminal fragment (E3CaG1) readily inhibits sGC in Jurkat T cells and that inhibition requires an increase in [Ca(2+)](i). Using flow cytometry, we show that E3CaG1 binds directly to CD47 on the surface of Jurkat T cells. Using digital imaging microscopy on live cells, we further show that E3CaG1 binding results in a substantial increase in [Ca(2+)](i), up to 300 nM. Addition of angiotensin II, a potent vasoconstrictor known to increase [Ca(2+)](i), also strongly inhibits sGC activity. sGC isolated from calcium-treated cells or from cell-free lysates supplemented with Ca(2+) remains inhibited, while addition of kinase inhibitor staurosporine prevents inhibition, indicating inhibition is likely due to phosphorylation. Inhibition is through an increase in K(m) for GTP, which rises to 834 μM for the NO-stimulated protein, a 13-fold increase over the uninhibited protein. Compounds YC-1 and BAY 41-2272, allosteric stimulators of sGC that are of interest for treating hypertension, overcome E3CaG1-mediated inhibition of NO-ligated sGC. Taken together, these data suggest that sGC not only lowers [Ca(2+)](i) in response to NO, inducing vasodilation, but also is inhibited by high [Ca(2+)](i), providing a fine balance between signals for vasodilation and vasoconstriction.
Collapse
Affiliation(s)
- Saumya Ramanathan
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona 85721, United States
| | | | | | | |
Collapse
|
49
|
Emerging functions of matricellular proteins. Cell Mol Life Sci 2011; 68:3133-6. [PMID: 21833584 DOI: 10.1007/s00018-011-0779-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 07/19/2011] [Accepted: 07/19/2011] [Indexed: 10/17/2022]
|
50
|
Klenotic PA, Page RC, Misra S, Silverstein RL. Expression, purification and structural characterization of functionally replete thrombospondin-1 type 1 repeats in a bacterial expression system. Protein Expr Purif 2011; 80:253-9. [PMID: 21821127 DOI: 10.1016/j.pep.2011.07.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 07/20/2011] [Accepted: 07/21/2011] [Indexed: 11/30/2022]
Abstract
The matrix glycoprotein thrombospondin-1 (TSP-1) is a prominent regulator of endothelial cells and angiogenesis. The anti-angiogenic and anti-tumorigenic properties of TSP-1 are in part mediated by the TSP-1 type 1 repeat domains 2 and 3, TSR(2,3). Here, we describe the expression and purification of human TSR(2,3) in milligram quantities from an Escherichia coli expression system. Microvascular endothelial cell migration assays and binding assays with a canonical TSP-1 ligand, histidine-rich glycoprotein (HRGP), indicate that recombinant TSR(2,3) exhibits anti-chemotactic and ligand binding properties similar to full length TSP-1. Furthermore, we determined the structure of E. coli expressed TSR(2,3) by X-ray crystallography at 2.4Å and found the structure to be identical to the existing TSR(2,3) crystal structure determined from a Drosophila expression system. The TSR(2,3) expression and purification protocol developed in this study allows for facile expression of TSR(2,3) for biochemical and biophysical studies, and will aid in the elucidation of the molecular mechanisms of TSP-1 anti-angiogenic and anti-tumorigenic activities.
Collapse
Affiliation(s)
- Philip A Klenotic
- Department of Cell Biology, NC10, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | | | | | | |
Collapse
|