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Zeriouh M, Sabashnikov A, Tenbrock A, Neef K, Merkle J, Eghbalzadeh K, Weber C, Liakopoulos OJ, Deppe AC, Stamm C, Cowan DB, Wahlers T, Choi YH. Dysregulation of proangiogeneic factors in pressure-overload left-ventricular hypertrophy results in inadequate capillary growth. Ther Adv Cardiovasc Dis 2019; 13:1753944719841795. [PMID: 31088231 PMCID: PMC6535753 DOI: 10.1177/1753944719841795] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background: Pressure-overload left-ventricular hypertrophy (LVH) is an increasingly prevalent pathological condition of the myocardial muscle and an independent risk factor for a variety of cardiac diseases. We investigated changes in expression levels of proangiogeneic genes in a small animal model of LVH. Methods: Myocardial hypertrophy was induced by transaortic constriction (TAC) in C57BL/6 mice and compared with sham-operated controls. The myocardial expression levels of vascular endothelial growth factor (VEGF), its receptors (KDR and FLT-1), stromal-cell-derived factor 1 (SDF1) and the transcription factors hypoxia-inducible factor-1 and 2 (HIF1 and HIF2) were analyzed by quantitative polymerase chain reaction over the course of 25 weeks. Histological sections were stained for caveolin-1 to visualize endothelial cells and determine the capillary density. The left-ventricular morphology and function were assessed weekly by electrocardiogram-gated magnetic resonance imaging. Results: The heart weight of TAC animals increased significantly from week 4 to 25 (p = 0.005) compared with sham-treated animals. At 1 day after TAC, the expression of VEGF and SDF1 also increased, but was downregulated again after 1 week. The expression of HIF2 was significantly downregulated after 1 week and remained at a lower level in the subsequent weeks. The expression level of FLT-1 was also significantly decreased 1 week after TAC. HIF-1 and KDR showed similar changes compared with sham-operated animals. However, the expression levels of HIF1 after 4 and 8 weeks were significantly decreased compared with day 1. KDR changes were significantly decreased after 1, 2, 4, 8 and 25 weeks compared with week 3. After 4 weeks post-TAC, the size of the capillary vessels increased (p = 0.005) while the capillary density itself decreased (TAC: 2143 ± 293 /mm2versus sham: 2531 ± 321 /mm2; p = 0.021). Starting from week 4, the left-ventricular ejection fraction decreased compared with controls (p = 0.049). Conclusions: The decrease in capillary density in the hypertrophic myocardium appears to be linked to the dysregulation in the expression of proangiogeneic factors. The results suggest that overcoming this dysregulation may lead to reconstitution of capillary density in the hypertrophic heart, and thus be beneficial for cardiac function and survival.
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Affiliation(s)
- Mohamed Zeriouh
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany
| | - Anton Sabashnikov
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany
| | - Arne Tenbrock
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany
| | - Klaus Neef
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany
| | - Julia Merkle
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany
| | - Kaveh Eghbalzadeh
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany
| | - Carolyn Weber
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany
| | | | | | - Christof Stamm
- Berlin-Brandenburg Center for Regenerative Therapies, Berlin, Germany
| | - Douglas B Cowan
- Department of Anesthesiology, Perioperative and Pain Medicine, Children's Hospital Boston and Harvard Medical School, Boston, MA, USA
| | - Thorsten Wahlers
- Department of Cardiothoracic Surgery, University of Cologne, Cologne, Germany.,Center of Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Yeong-Hoon Choi
- Center of Molecular Medicine Cologne, University of Cologne, Cologne, Germany
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2
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CXCR4 Antagonist Reduced the Incidence of Acute Rejection and Controlled Cardiac Allograft Vasculopathy in a Swine Heart Transplant Model Receiving a Mycophenolate-based Immunosuppressive Regimen. Transplantation 2019; 102:2002-2011. [PMID: 30095739 PMCID: PMC6257103 DOI: 10.1097/tp.0000000000002404] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND CXC motif chemokine receptor 4 (CXCR4) blockade is pursued as an alternative to mesenchymal stem cell treatment in transplantation based on our previous report that burixafor, through CXCR4 antagonism, mobilizes immunomodulatory mesenchymal stem cells. Here, we explored the efficacy of combining mycophenolate mofetil (MMF)-based immunosuppressants with repetitive burixafor administration. METHODS Swine heterotopic cardiac allograft recipients received MMF and corticosteroids (control, n = 10) combined with burixafor as a 2-dose (burixafor2D, n = 7) or 2-dose plus booster injections (burixafor2D + B, n = 5) regimen. The efficacy endpoints were graft survival, freedom from first acute rejection, and the severity of intimal hyperplasia. Each specimen was sacrificed either at its first graft arrest or after 150 days. RESULTS After 150 days, all specimens in the control group had died, but 28.5% of the burixafor2D group survived, and 60% of the burixafor2D + B group survived (P = 0.0088). Although the control group demonstrated acute rejection at a median of 33.5 days, the burixafor2D + B group survived without acute rejection for a median of 136 days (P = 0.0209). Burixafor administration significantly attenuated the incidence rate of acute rejection (P = 0.002) and the severity of intimal hyperplasia (P = 0.0097) at end point relative to the controls. These findings were associated with reduced cell infiltrates in the allografts, and modulation of C-reactive protein profiles in the circulation. CONCLUSIONS The augmentation of conventional MMF plus corticosteroids with a CXCR4 antagonist is potentially effective in improving outcomes after heart transplantation in minipigs. Future studies are warranted into optimizing the therapeutic regimens for humans.
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3
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Bromage DI, Taferner S, Pillai M, Yellon DM, Davidson SM. A novel recombinant antibody specific to full-length stromal derived factor-1 for potential application in biomarker studies. PLoS One 2017; 12:e0174447. [PMID: 28379992 PMCID: PMC5381782 DOI: 10.1371/journal.pone.0174447] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/09/2017] [Indexed: 11/21/2022] Open
Abstract
Background Stromal derived factor-1α (SDF-1α/CXCL12) is a chemokine that is up-regulated in diseases characterised by tissue hypoxia, including myocardial infarction, ischaemic cardiomyopathy and remote ischaemic conditioning (RIC), a technique of cyclical, non-injurious ischaemia applied remote from the heart that protects the heat from lethal ischaemia-reperfusion injury. Accordingly, there is considerable interest in SDF-1α as a potential biomarker of such conditions. However, SDF-1α is rapidly degraded and inactivated by dipeptidyl peptidase 4 and other peptidases, and the kinetics of intact SDF-1α remain unknown. Methods & results To facilitate investigation of full-length SDF-1α we established an ELISA using a novel recombinant human antibody we developed called HCI.SDF1. HCI.SDF1 is specific to the N-terminal sequence of all isoforms of SDF-1 and has a comparable KD to commercially available antibodies. Together with a detection antibody specific to the α-isoform, HCI.SDF1 was used to specifically quantify full-length SDF-1α in blood for the first time. Using RIC applied to the hind limb of Sprague-Dawley rats or the arms of healthy human volunteers, we demonstrate an increase in SDF-1α using a commercially available antibody, as previously reported, but an unexpected decrease in full-length SDF-1α after RIC in both species. Conclusions We report for the first time the development of a novel recombinant antibody specific to full-length SDF-1. Applied to RIC, we demonstrate a significant decrease in SDF-1α that is at odds with the literature and suggests a need to investigate the kinetics of full-length SDF-1α in conditions characterised by tissue hypoxia.
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Affiliation(s)
- Daniel I. Bromage
- The Hatter Cardiovascular Institute, University College London, London, United Kingdom
| | - Stasa Taferner
- The Hatter Cardiovascular Institute, University College London, London, United Kingdom
| | - Mahesh Pillai
- The Hatter Cardiovascular Institute, University College London, London, United Kingdom
| | - Derek M. Yellon
- The Hatter Cardiovascular Institute, University College London, London, United Kingdom
| | - Sean M. Davidson
- The Hatter Cardiovascular Institute, University College London, London, United Kingdom
- * E-mail:
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4
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Kim BS, Jacobs D, Emontzpohl C, Goetzenich A, Soppert J, Jarchow M, Schindler L, Averdunk L, Kraemer S, Marx G, Bernhagen J, Pallua N, Schlemmer HP, Simons D, Stoppe C. Myocardial Ischemia Induces SDF-1α Release in Cardiac Surgery Patients. J Cardiovasc Transl Res 2016; 9:230-238. [PMID: 27055858 DOI: 10.1007/s12265-016-9689-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 03/22/2016] [Indexed: 01/07/2023]
Abstract
In the present observational study, we measured serum levels of the chemokine stromal cell-derived factor-1α (SDF-1α) in 100 patients undergoing cardiac surgery with cardiopulmonary bypass at seven distinct time points including preoperative values, myocardial ischemia, reperfusion, and the postoperative course. Myocardial ischemia triggered a marked increase of SDF-1α serum levels whereas cardiac reperfusion had no significant influence. Perioperative SDF-1α serum levels were influenced by patients' characteristics (e.g., age, gender, aspirin intake). In an explorative analysis, we observed an inverse association between SDF-1α serum levels and the incidence of organ dysfunction. In conclusion, time of myocardial ischemia was identified as the key stimulus for a significant upregulation of SDF-1α, indicating its role as a marker of myocardial injury. The inverse association between SDF-1α levels and organ dysfunction association encourages further studies to evaluate its organoprotective properties in cardiac surgery patients.
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Affiliation(s)
- Bong-Sung Kim
- Department of Plastic Surgery, Hand Surgery, Burn Center, RWTH Aachen University, Aachen, Germany
| | - Denise Jacobs
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Aachen, Germany
| | - Christoph Emontzpohl
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Aachen, Germany
| | - Andreas Goetzenich
- Department of Thoracic, Cardiac and Vascular Surgery, University Hospital, RWTH Aachen, Aachen, Germany
| | - Josefin Soppert
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Aachen, Germany
| | - Mareike Jarchow
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Aachen, Germany
| | - Lisa Schindler
- Department of Thoracic, Cardiac and Vascular Surgery, University Hospital, RWTH Aachen, Aachen, Germany.,Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University, Munich, Germany
| | - Luisa Averdunk
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Aachen, Germany
| | - Sandra Kraemer
- Department of Thoracic, Cardiac and Vascular Surgery, University Hospital, RWTH Aachen, Aachen, Germany
| | - Gernot Marx
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Aachen, Germany
| | - Jürgen Bernhagen
- Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University, Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Norbert Pallua
- Department of Plastic Surgery, Hand Surgery, Burn Center, RWTH Aachen University, Aachen, Germany
| | | | - David Simons
- German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Christian Stoppe
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Aachen, Germany.
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5
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Crosstalk between SDF-1/CXCR4 and SDF-1/CXCR7 in cardiac stem cell migration. Sci Rep 2015; 5:16813. [PMID: 26578388 PMCID: PMC4649491 DOI: 10.1038/srep16813] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 10/20/2015] [Indexed: 12/20/2022] Open
Abstract
Stromal cell-derived factor 1 (SDF-1) is a chemokine that can be expressed in injured cardiomyocytes after myocardial infarction (MI). By combining with its receptor CXCR4, SDF-1 induced stem and progenitor cells migration. CXCR7, a novel receptor for SDF-1, has been identified recently. We aimed to explore the roles of SDF-1/CXCR4 and SDF-1/CXCR7 pathway and their crosstalk in CSCs migration. In the present study, CXCR4 and CXCR7 expression were identified in CSCs. Transwell assay showed that SDF-1 caused CSCs migration in a dose- and time-dependent manner, which could be significantly suppressed by CXCR4 or CXCR7 siRNA. Phospho-ERK, phospho-Akt and Raf-1 significantly elevated in CSCs with SDF-1 stimulation. Knockdown of CXCR4 or CXCR7 significantly decreased phospho-ERK or phospho-Akt, respectively, and eventually resulted in the inhibition of CSCs migration. Moreover, western blot showed that MK2206 (Akt inhibitor) increased the expression of phospho-ERK and Raf-1, whereas PD98059 (ERK inhibitor) had no effect on phospho-Akt and Raf-1. GW5074 (Raf-1 inhibitor) upregulated the expression of phospho-ERK, but had no effect on phospho-Akt. The present study indicated that SDF-1/CXCR7/Akt and SDF-1/CXCR4/ERK pathway played important roles in CSCs migration. Akt phosphorylation inhibited Raf-1 activity, which in turn dephosphorylated ERK and negatively regulated CSCs migration.
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6
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7
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Frederich R, Alexander JH, Fiedorek FT, Donovan M, Berglind N, Harris S, Chen R, Wolf R, Mahaffey KW. A Systematic Assessment of Cardiovascular Outcomes in the Saxagliptin Drug Development Program for Type 2 Diabetes. Postgrad Med 2015; 122:16-27. [DOI: 10.3810/pgm.2010.05.2138] [Citation(s) in RCA: 183] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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ENDOTHELIAL PROGENITOR CELLS AND RESPONSE TO RANIBIZUMAB IN AGE-RELATED MACULAR DEGENERATION. Retina 2014; 34:1802-10. [DOI: 10.1097/iae.0000000000000147] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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9
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Döring Y, Pawig L, Weber C, Noels H. The CXCL12/CXCR4 chemokine ligand/receptor axis in cardiovascular disease. Front Physiol 2014; 5:212. [PMID: 24966838 PMCID: PMC4052746 DOI: 10.3389/fphys.2014.00212] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 05/15/2014] [Indexed: 12/18/2022] Open
Abstract
The chemokine receptor CXCR4 and its ligand CXCL12 play an important homeostatic function by mediating the homing of progenitor cells in the bone marrow and regulating their mobilization into peripheral tissues upon injury or stress. Although the CXCL12/CXCR4 interaction has long been regarded as a monogamous relation, the identification of the pro-inflammatory chemokine macrophage migration inhibitory factor (MIF) as an important second ligand for CXCR4, and of CXCR7 as an alternative receptor for CXCL12, has undermined this interpretation and has considerably complicated the understanding of CXCL12/CXCR4 signaling and associated biological functions. This review aims to provide insight into the current concept of the CXCL12/CXCR4 axis in myocardial infarction (MI) and its underlying pathologies such as atherosclerosis and injury-induced vascular restenosis. It will discuss main findings from in vitro studies, animal experiments and large-scale genome-wide association studies. The importance of the CXCL12/CXCR4 axis in progenitor cell homing and mobilization will be addressed, as will be the function of CXCR4 in different cell types involved in atherosclerosis. Finally, a potential translation of current knowledge on CXCR4 into future therapeutical application will be discussed.
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Affiliation(s)
- Yvonne Döring
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University Munich, Germany
| | - Lukas Pawig
- Institute for Molecular Cardiovascular Research, RWTH Aachen University Aachen, Germany
| | - Christian Weber
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University Munich, Germany ; German Centre for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance Munich, Germany ; Cardiovascular Research Institute Maastricht, University of Maastricht Maastricht, Netherlands
| | - Heidi Noels
- Institute for Molecular Cardiovascular Research, RWTH Aachen University Aachen, Germany
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10
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Bromage DI, Davidson SM, Yellon DM. Stromal derived factor 1α: a chemokine that delivers a two-pronged defence of the myocardium. Pharmacol Ther 2014; 143:305-15. [PMID: 24704323 PMCID: PMC4127789 DOI: 10.1016/j.pharmthera.2014.03.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 03/20/2014] [Indexed: 01/03/2023]
Abstract
Alleviating myocardial injury associated with ST elevation myocardial infarction is central to improving the global burden of coronary heart disease. The chemokine stromal cell-derived factor 1α (SDF-1α) has dual potential benefit in this regard. Firstly, SDF-1α is up-regulated in experimental and clinical studies of acute myocardial infarction (AMI) and regulates stem cell migration to sites of injury. SDF-1α delivery to the myocardium after AMI is associated with improved stem cell homing, angiogenesis, and left ventricular function in animal models, and improvements in heart failure and quality of life in humans. Secondly, SDF-1α may have a role in remote ischaemic conditioning (RIC), the phenomenon whereby non-lethal ischaemia–reperfusion applied to an organ or tissue remote from the heart protects the myocardium from lethal ischaemia–reperfusion injury (IRI). SDF-1α is increased in the serum of rats subjected to RIC and protects against myocardial IRI in ex vivo studies. Despite these potential pleiotropic effects, a limitation of SDF-1α is its short plasma half-life due to cleavage by dipeptidyl peptidase-4 (DPP-4). However, DPP-4 inhibitors increase the half-life of SDF-1α by preventing its degradation and are also protective against lethal IRI. In summary, SDF-1 potentially delivers a ‘two-pronged’ defence of the myocardium: acutely protecting it from IRI while simultaneously stimulating repair by recruiting stem cells to the site of injury. In this article we examine the evidence for acute and chronic cardioprotective roles of SDF-1α and discuss potential therapeutic manipulations of this mechanism with DPP-4 inhibitors to protect against lethal tissue injury in the clinical setting.
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Affiliation(s)
- Daniel I Bromage
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London WC1E 6HX, United Kingdom
| | - Sean M Davidson
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London WC1E 6HX, United Kingdom
| | - Derek M Yellon
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London WC1E 6HX, United Kingdom
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11
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Rubach M, Adelmann R, Haustein M, Drey F, Pfannkuche K, Xiao B, Koester A, Udink ten Cate FEA, Choi YH, Neef K, Fatima A, Hannes T, Pillekamp F, Hescheler J, Šarić T, Brockmeier K, Khalil M. Mesenchymal stem cells and their conditioned medium improve integration of purified induced pluripotent stem cell-derived cardiomyocyte clusters into myocardial tissue. Stem Cells Dev 2014; 23:643-53. [PMID: 24219308 DOI: 10.1089/scd.2013.0272] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Induced pluripotent stem cell-derived cardiomyocytes (iPS-CMs) might become therapeutically relevant to regenerate myocardial damage. Purified iPS-CMs exhibit poor functional integration into myocardial tissue. The aim of this study was to investigate whether murine mesenchymal stem cells (MSCs) or their conditioned medium (MScond) improves the integration of murine iPS-CMs into myocardial tissue. Vital or nonvital embryonic murine ventricular tissue slices were cocultured with purified clusters of iPS-CMs in combination with murine embryonic fibroblasts (MEFs), MSCs, or MScond. Morphological integration was assessed by visual scoring and functional integration by isometric force and field potential measurements. We observed a moderate morphological integration of iPS-CM clusters into vital, but a poor integration into nonvital, slices. MEFs and MSCs but not MScond improved morphological integration of CMs into nonvital slices and enabled purified iPS-CMs to confer force. Coculture of vital slices with iPS-CMs and MEFs or MSCs resulted in an improved electrical integration. A comparable improvement of electrical coupling was achieved with the cell-free MScond, indicating that soluble factors secreted by MSCs were involved in electrical coupling. We conclude that cells such as MSCs support the engraftment and adhesion of CMs, and confer force to noncontractile tissue. Furthermore, soluble factors secreted by MSCs mediate electrical coupling of purified iPS-CM clusters to myocardial tissue. These data suggest that MSCs may increase the functional engraftment and therapeutic efficacy of transplanted iPS-CMs into infarcted myocardium.
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Affiliation(s)
- Martin Rubach
- 1 Department of Pediatric Cardiology, University of Cologne , Cologne, Germany
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12
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Early Fibroblast Progenitor Cell Migration to the AngII-Exposed Myocardium Is Not CXCL12 or CCL2 Dependent as Previously Thought. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 183:459-69. [DOI: 10.1016/j.ajpath.2013.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 02/14/2013] [Accepted: 04/09/2013] [Indexed: 12/19/2022]
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13
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Wurster T, Stellos K, Haap M, Seizer P, Geisler T, Otton J, Indermuehle A, Ishida M, Schuster A, Nagel E, Gawaz M, Bigalke B. Platelet expression of stromal-cell-derived factor-1 (SDF-1): An indicator for ACS? Int J Cardiol 2013; 164:111-5. [DOI: 10.1016/j.ijcard.2011.06.082] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 05/17/2011] [Accepted: 06/15/2011] [Indexed: 11/26/2022]
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14
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Zhang L, Zhu J, Du R, Zhu Z, Zhang J, Han W, Zhang R. Effect of recombinant human SDF-1a on re-endothelialization after sirolimus-eluting stent implantation in rabbit aorta abdominalis. Life Sci 2011; 89:926-30. [DOI: 10.1016/j.lfs.2011.09.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2011] [Revised: 08/17/2011] [Accepted: 09/26/2011] [Indexed: 10/17/2022]
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15
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Togel FE, Westenfelder C. Role of SDF-1 as a regulatory chemokine in renal regeneration after acute kidney injury. Kidney Int Suppl (2011) 2011; 1:87-89. [PMID: 25018907 PMCID: PMC4089742 DOI: 10.1038/kisup.2011.20] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Both the homing of hematopoietic stem cells (HSCs) to the bone marrow and their engraftment in recipients of bone marrow transplants are primarily mediated by the chemokine stromal-derived factor-1 (SDF-1) or CXCL12, which activates CXCR4, its cognate receptor on HSCs. We showed that the recruitment and temporary attachment of CXCR4-expressing cells, such as HSCs and a fraction of mesenchymal stem cells (MSCs), to the kidney, following ischemia/reperfusion acute kidney injury, are similarly mediated by robustly upregulated SDF-1 in the kidney, indicating that such organ injury appears to lead to the transient expression of a facultative stem cell niche. This SDF-1 response of the injured kidney facilitates both the mobilization from the bone marrow and homing of precursor cells, and other CXCR4-expressing cells such as administered MSCs, to the kidney, where they aid in its protection and repair. Similar responses have been observed subsequent to the injury of other solid organs such as the heart, liver, and brain.
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Affiliation(s)
- Florian E Togel
- Department of Internal Medicine, Weill Cornell Medical College , New York, New York, USA
| | - Christof Westenfelder
- Section of Nephrology (111 N), George E. Wahlen VA HSC and University of Utah Medical Center , Salt Lake City, Utah, USA
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16
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Van Linthout S, Stamm C, Schultheiss HP, Tschöpe C. Mesenchymal stem cells and inflammatory cardiomyopathy: cardiac homing and beyond. Cardiol Res Pract 2011; 2011:757154. [PMID: 21403844 PMCID: PMC3051267 DOI: 10.4061/2011/757154] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Accepted: 01/14/2011] [Indexed: 12/17/2022] Open
Abstract
Under conventional heart failure therapy, inflammatory cardiomyopathy usually has a progressive course, merging for alternative interventional strategies. There is accumulating support for the application of cellular transplantation as a strategy to improve myocardial function. Mesenchymal stem cells (MSCs) have the advantage over other stem cells that they possess immunomodulatory features, making them attractive candidates for the treatment of inflammatory cardiomyopathy. Studies in experimental models of inflammatory cardiomyopathy have consistently demonstrated the potential of MSCs to reduce cardiac injury and to improve cardiac function. This paper gives an overview about how inflammation triggers the functionality of MSCs and how it induces cardiac homing. Finally, the potential of intravenous application of MSCs by inflammatory cardiomyopathy is discussed.
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Affiliation(s)
- S Van Linthout
- Berlin-Brandenburg Center for Regenerative Therapies, Charité-University Medicine Berlin, Campus Virchow, 13353 Berlin, Germany
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17
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Lee JP, Bae JB, Yang SH, Cha RH, Seong EY, Park YJ, Ha J, Park MH, Paik JH, Kim YS. Genetic predisposition of donors affects the allograft outcome in kidney transplantation; polymorphisms of stromal-derived factor-1 and CXC receptor 4. PLoS One 2011; 6:e16710. [PMID: 21304904 PMCID: PMC3033398 DOI: 10.1371/journal.pone.0016710] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2010] [Accepted: 01/11/2011] [Indexed: 12/11/2022] Open
Abstract
Genetic interaction between donor and recipient may dictate the impending
responses after transplantation. In this study, we evaluated the role of the
genetic predispositions of stromal-derived factor-1 (SDF1) [rs1801157
(G>A)] and CXC receptor 4 (CXCR4) [rs2228014 (C>T)] on
renal allograft outcomes. A total of 335 pairs of recipients and donors were
enrolled. Biopsy-proven acute rejection (BPAR) and long-term graft survival were
traced. Despite similar allele frequencies between donors and recipients, minor
allele of SDF1 rs1801157 (GA+AA) from donor, not from recipients, has a
protective effect on the development of BPAR compared to wild type donor (GG)
(P = 0.005). Adjustment for multiple
covariates did not affect this result (odds ratio 0.39, 95% C.I
0.20–0.76, P = 0.006). CXCR4
rs2228014 polymorphisms from donor or recipient did not affect the incidence of
acute rejection. SDF1 was differentially expressed in renal tubular epithelium
with acute rejection according to genetic variations of donor rs1801157 showing
higher expressions in the grafts from GG donors. Contrary to the development of
BPAR, the presence of minor allele rs1801157 A, especially homozygocity,
predisposed poor graft survival
(P = 0.001). This association was
significant after adjusting for several risk factors (hazard ratio 3.01;
95% C.I = 1.19–7.60;
P = 0.020). The allelic variation of
recipients, however, was not associated with graft loss. A donor-derived genetic
polymorphism of SDF1 has influenced the graft outcome. Thus, the genetic
predisposition of donor should be carefully considered in transplantation.
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Affiliation(s)
- Jung Pyo Lee
- Seoul National University Kidney Research
Institute, Seoul, Korea
| | - Jong Bin Bae
- Seoul National University College of Medicine,
Seoul, Korea
| | - Seung Hee Yang
- Seoul National University Kidney Research
Institute, Seoul, Korea
| | - Ran-hui Cha
- Department of Internal Medicine, Seoul
National University College of Medicine, Seoul, Korea
| | - Eun Young Seong
- Department of Internal Medicine, Pusan
National University School of Medicine, Busan, Korea
| | - Yang Jin Park
- Department of Surgery, Seoul National
University College of Medicine, Seoul, Korea
| | - Jongwon Ha
- Department of Surgery, Seoul National
University College of Medicine, Seoul, Korea
| | - Myoung Hee Park
- Department of Laboratory Medicine, Seoul
National University College of Medicine and Clinical Research Institute, Seoul,
Korea
| | - Jin Ho Paik
- Department of Pathology, Seoul National
University College of Medicine, Seoul, Korea
| | - Yon Su Kim
- Seoul National University Kidney Research
Institute, Seoul, Korea
- Department of Internal Medicine, Seoul
National University College of Medicine, Seoul, Korea
- * E-mail:
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18
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SDF-1α as a therapeutic stem cell homing factor in myocardial infarction. Pharmacol Ther 2011; 129:97-108. [DOI: 10.1016/j.pharmthera.2010.09.011] [Citation(s) in RCA: 160] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Accepted: 09/30/2010] [Indexed: 12/20/2022]
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19
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Levels of circulating CXCR4-positive cells are decreased and negatively correlated with risk factors in cardiac transplant recipients. Heart Vessels 2010; 26:258-66. [PMID: 21052687 DOI: 10.1007/s00380-010-0053-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Accepted: 04/16/2010] [Indexed: 12/23/2022]
Abstract
The association between levels of circulating endothelial progenitor cells (EPCs) and heart transplant recipients (HTX) with cardiac allograft vasculopathy (CAV) is under debate. The chemokine receptor CXCR4 plays an important role in the mobilization of progenitor cells and is implicated in pathological conditions, including cardiovascular disease. This study aims to evaluate the association between EPCs and CXCR4-positive cells in HTX patients. Peripheral blood mononuclear cells (PBMCs) from 34 HTX patients and 25 control participants were analyzed by flow cytometry for CXCR4-positive cells and EPCs. Endothelial progenitor cells were defined by the expression of a range of hematopoietic and endothelial lineage markers in different combinations. The ability to form endothelial cell colonies in vitro was also assessed by colony-forming unit (CFU) assay. Phenotypic analysis of EPCs by flow cytometry revealed similar levels in HTX patients compared to controls. In addition, no difference was observed between levels of EPCs or CFU number in patients with and without CAV. By contrast, CFU assay revealed a reduced number of CFUs in HTX patients compared to controls (3.3% ± 0.95 and 13.3% ± 4.5%, respectively, P = 0.014). Likewise, levels of CXCR4-positive cells were significantly reduced (15.9 ± 1.4 in patients vs 24.8 ± 3.3% in controls, P < 0.01), negatively correlated with Framingham risk score (rho = -0.4, P = 0.02) and the number of risk factors (rho = -0.3, P = 0.049). Levels of CXCR4-positive cells were also correlated with CFU number (r = 0.65, P = 0.0005). These findings further develop our understanding of the role of EPCs and endothelial CFUs in cardiovascular disease, in addition to highlighting the potential importance of CXCR4 in heart transplantation.
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20
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Schober A, Hristov M, Kofler S, Forbrig R, Löhr B, Heussen N, Zhe Z, Akhtar S, Schumann U, Krötz F, Leibig M, König A, Kaczmarek I, Reichart B, Klauss V, Weber C, Sohn HY. CD34+CD140b+ cells and circulating CXCL12 correlate with the angiographically assessed severity of cardiac allograft vasculopathy. Eur Heart J 2010; 32:476-84. [PMID: 21036775 DOI: 10.1093/eurheartj/ehq402] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS We sought to determine whether circulating vascular progenitor cells, such as endothelial progenitor cells (EPCs) or smooth muscle progenitor cells (SPCs), were associated with the severity of cardiac allograft vasculopathy (CAV). METHODS AND RESULTS CD34(+)CD140b(+) SPCs and CD34(+)KDR(+) EPCs were measured in the peripheral circulation of 187 adult heart transplant recipients by flow cytometry. Cardiac allograft vasculopathy was quantified by angiography using a CAV-specific scoring system. Cardiac allograft vasculopathy was present in 84 patients (44.7%) and was classified as mild in 59 and severe in 25 cases. Circulating SPCs were more frequently detectable in CAV patients than in patients without CAV. The number of CD34(+)CD140b(+) cells showed a stepwise increase in patients with moderate and severe CAV. Smooth muscle progenitor cell counts were higher in patients with coronary stent implant compared with unstented patients with CAV. In contrast, peripheral CD34(+)KDR(+) EPC counts were not changed in CAV patients. Plasma CXCL12 levels correlated with the degree of CAV and SPC counts. None of the different immunosuppressive drug regimes was related to the SPC count or the CXCL12 levels. A multivariate regression analysis revealed that the SPC count was independently associated with the presence of CAV. CONCLUSION Circulating SPCs, but not EPCs, and plasma CXCL12 concentrations are elevated in CAV patients, indicating that they play prominent roles in transplant arteriosclerosis.
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Affiliation(s)
- Andreas Schober
- Medizinische Poliklinik Innenstadt, Kardiologie, University of Munich, Munich, Germany.
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21
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Chang HW, Leu S, Sun CK, Hang CL, Youssef AA, Hsieh YK, Yang CH, Cheng CI, Chen SM, Chen CJ, Chua S, Chang LT, Wu CJ, Yip HK. Level and value of circulating endothelial progenitor cells in patients with acute myocardial infarction undergoing primary coronary angioplasty: in vivo and in vitro studies. Transl Res 2010; 156:251-63. [PMID: 20875902 DOI: 10.1016/j.trsl.2010.07.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 07/13/2010] [Accepted: 07/20/2010] [Indexed: 10/19/2022]
Abstract
Levels of circulating endothelial progenitor cells (EPCs) in acute ST-elevation myocardial infarction (STEMI) patients undergoing primary coronary intervention (PCI) were investigated in this study. Flow cytometric analysis of the circulating EPC level (CD31/CD34 [E(1)], CD62E/CD34 [E(2)], and KDR/CD34 [E(3)]) was determined from blood samples of 161 consecutive patients with STEMI undergoing primary PCI. Angiogenesis was evaluated using mononuclear cell-derived EPCs on Matrigel. The EPC number (E(1-3)) was lower in STEMI patients than in normal subjects (n = 25) (P < 0.005). Patients with high EPCs (E(1-3)) (≥1.2%) had a lower left ventricular ejection fraction, elevated white blood cell count and creatinine level, advanced Killip score (≥class 3), more advanced congestive heart failure (CHF) (≥class 3), and increased 30-day mortality than those with a low EPC (E(1-3)) level (<1.2%) (P < 0.0001). Angiogenesis was lower in patients with a high EPC level than those with a low EPC level and normal controls (P < 0.001). Both the advanced Killip score and the CHF were independent predictors of increased EPC levels (P < 0.05). Multivariate analysis identified a high EPC (E(3)) level to be the most important predictor of increased 30-day major adverse clinical outcome (MACO) (P < 0.0001). In conclusion, the circulating EPC level is a major independent predictor of 30-day MACO in patients with STEMI undergoing primary PCI.
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Affiliation(s)
- Hsueh-Wen Chang
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
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22
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Khanna AK, Xu J, Uber PA, Burke AP, Baquet C, Mehra MR. Tobacco Smoke Exposure in Either the Donor or Recipient Before Transplantation Accelerates Cardiac Allograft Rejection, Vascular Inflammation, and Graft Loss. Circulation 2009; 120:1814-21. [DOI: 10.1161/circulationaha.108.840223] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
Tobacco exposure in cardiac transplant recipients, before and after transplantation, may increase the risk of cardiac allograft vasculopathy and allograft loss, but no direct evidence for this phenomenon is forthcoming. In this experimental study, we investigated early consequences of tobacco smoke exposure in cardiac transplant donors and recipients with an emphasis on alloinflammatory mediators of graft outcome.
Methods and Results—
Using heterotopic rat cardiac transplantation, we tested the effects of donor or recipient tobacco smoke exposure in 6 groups of animals (rat heterotopic cardiac transplantation) as follows: tobacco-naïve allogeneic rejecting controls (n=6), tobacco-naïve nonrejecting controls (n=3; killed on day 5 to simulate survival times of tobacco-treated animals), isografts (n=3), both donor and recipient rats exposed to tobacco smoke (n=4), only donor rats exposed to tobacco smoke (n=7), and only recipient rats exposed to tobacco smoke (n=6). Polymerase chain reaction studies of tissue and peripheral (systemic) protein expression were performed to evaluate inflammatory (tumor necrosis factor-α, interferon-γ, interleukin-6) and alloimmune (interleukin-1 receptor 2, programmed cell death-1, and stromal cell-derived factor-1) pathways, as was histological analysis of the cardiac allografts. Our experiments reveal that pretransplantation tobacco exposure in donors and/or recipients results in heightened systemic inflammation and increased oxidative stress, reduces posttransplantation cardiac allograft survival by 33% to 57%, and increases intragraft inflammation (tumor necrosis factor-α, interferon-γ, interleukin-6) and alloimmune activation (CD3, interleukin-1 receptor 2, programmed cell death-1, and stromal cell-derived factor-1) with consequent myocardial and vascular destruction.
Conclusions—
These sentinel findings confirm that tobacco smoke exposure in either donors or recipients leads to accelerated allograft rejection, vascular inflammation, and graft loss. Molecular pathways that intersect as arbiters in this phenomenon include instigation of alloimmune activation associated with tobacco smoke–induced inflammation.
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Affiliation(s)
- Ashwani K. Khanna
- From the Tobacco Research Laboratory, Division of Cardiology, University of Maryland School of Medicine, Baltimore
| | - Jianping Xu
- From the Tobacco Research Laboratory, Division of Cardiology, University of Maryland School of Medicine, Baltimore
| | - Patricia A. Uber
- From the Tobacco Research Laboratory, Division of Cardiology, University of Maryland School of Medicine, Baltimore
| | - Allen P. Burke
- From the Tobacco Research Laboratory, Division of Cardiology, University of Maryland School of Medicine, Baltimore
| | - Claudia Baquet
- From the Tobacco Research Laboratory, Division of Cardiology, University of Maryland School of Medicine, Baltimore
| | - Mandeep R. Mehra
- From the Tobacco Research Laboratory, Division of Cardiology, University of Maryland School of Medicine, Baltimore
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23
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Choy JC, Yi T, Rao DA, Tellides G, Fox-Talbot K, Baldwin WM, Pober JS. CXCL12 induction of inducible nitric oxide synthase in human CD8 T cells. J Heart Lung Transplant 2009; 27:1333-9. [PMID: 19059114 DOI: 10.1016/j.healun.2008.08.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2008] [Revised: 08/20/2008] [Accepted: 08/26/2008] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND We reported previously that inducible nitric oxide synthase (iNOS) expression in graft-infiltrating human T cells that is confined to the bystander population contributes to T- cell-mediated rejection of allograft arteries in a humanized mouse model. Herein we examine whether CXCL12, a chemokine thought to contribute to recruitment of bystander T cells, induces iNOS in human CD8 T cells. METHODS Human CD8 T cells were treated with CXCL12 and iNOS expression was examined. Also, human allograft arteries were immunohistochemically stained for iNOS and CD8, and adjacent sections stained for CXCL12 to determine their localization in human tissues. RESULTS Resting human CD8 and CD4 T cells expressed the CXCR4, but not the CXCR7, receptor for CXCL12. Treatment with CXCL12 induced expression of both iNOS mRNA and protein in primary human CD8 T cells in a dose-dependent manner, but had no effect on CD4 T cells. Induction of iNOS expression in CD8 T cells was mediated by increased gene transcription. T-cell-receptor (TCR)-activated CD8 T cells rapidly downregulated CXCR4, which coincided with diminished ability of CXCL12 to induce iNOS in activated T cells. iNOS expression in infiltrating human CD8 T cells was spatially associated with CXCL12 expression both in the humanized mouse model of allograft artery rejection and in clinical specimens of coronary arteries displaying allograft vasculopathy. CONCLUSIONS CXCL12 induces iNOS expression in human CD8 T cells and this response may contribute to allograft rejection.
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Affiliation(s)
- Jonathan C Choy
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06520-8089, USA
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24
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Chang LT, Yuen CM, Sun CK, Wu CJ, Sheu JJ, Chua S, Yeh KH, Yang CH, Youssef AA, Yip HK. Role of stromal cell-derived factor-1alpha, level and value of circulating interleukin-10 and endothelial progenitor cells in patients with acute myocardial infarction undergoing primary coronary angioplasty. Circ J 2009; 73:1097-104. [PMID: 19372622 DOI: 10.1253/circj.cj-08-0497] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The relationships among the circulating levels of endothelial progenitor cells (EPC), stromal cell-derived factor (SDF)-1alpha, interleukin (IL)-10 and outcome were examined in patients with ST-segment elevation acute myocardial infarction (ST-se AMI) undergoing primary coronary angioplasty. METHODS AND RESULTS Circulating levels of IL-10, SDF-1alpha, and EPCs [defined by staining markers: CD31/CD34 (E(1)) and KDR/CD34 (E(2))] were examined by ELISA and flow cytometry, respectively. The IL-10 level was higher, whereas the circulating level of EPCs (E(1-2)) was lower (all P<0.05) in AMI patients than in normal subjects. Additionally, the SDF-1alpha level was significantly and independently predictive of an increased level of circulating EPCs (E(1-2)) (P<0.0001). Furthermore, patients with a high SDF-1alpha level (>1,500 pg/ml) had lower left ventricular performance, higher Killip score (defined as >or=3), and increased 30-day mortality than those with low SDF-1alpha level (<or=1,500 pg/ml) (all P<0.007). Moreover, high circulating levels of E(2) and IL-10 were the most significant independent predictors of increased 30-day major adverse clinical outcome (MACO) (defined as advanced Killip score >or=3 or 30-day mortality) (P<0.01). CONCLUSIONS The serum SDF-1alpha level is independently predictive of an increased level of circulating EPCs (E(1-2)). E(2) and IL-10 are major independent predictors of 30-day MACO in ST-se AMI patients undergoing primary coronary angioplasty.
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Affiliation(s)
- Li-Teh Chang
- Basic Science, Nursing Department, Meiho Institute of Technology, Pingtung, Taiwan, ROC
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25
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Rezai N, Deisher TA, Heine HL, Wang X, Corbel SY, Leung J, Kerjner A, Rossi FMV, Podor TJ, McManus BM. Effects of granulocyte-colony stimulating factor on bone marrow-derived progenitor cells in murine cardiac transplantation. Cardiovasc Pathol 2009; 19:36-47. [PMID: 19144547 DOI: 10.1016/j.carpath.2008.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2007] [Revised: 09/04/2008] [Accepted: 10/10/2008] [Indexed: 11/24/2022] Open
Affiliation(s)
- Nana Rezai
- Department of Pathology and Laboratory Medicine, The James Hogg iCAPTURE Centre for Cardiovascular and Pulmonary Research, St. Paul's Hospital-University of British Columbia, 1081 Burrard Street, Vancouver, BC, Canada
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26
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Kuo LT, Chen SJ, Cherng WJ, Yang NI, Lee CC, Cheng CW, Verma S, Wang CH. Late Reperfusion of A Totally Occluded Infarct-Related Artery Increases Granulocyte-Colony Stimulation Factor and Reduces Stroma-Derived Factor-1.ALPHA. Blood Levels in Patients With Ongoing Ischemia After Acute Myocardial Infarction. Int Heart J 2009; 50:433-44. [DOI: 10.1536/ihj.50.433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Li-Tang Kuo
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
| | - Shih-Jen Chen
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
| | - Wen-Jin Cherng
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
| | - Ning-I Yang
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
| | - Chen-Chin Lee
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
| | - Chi-Wen Cheng
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
| | - Subodh Verma
- Division of Cardiac Surgery, Toronto General Hospital, and Division of Cardiac Surgery, St. Michael’s Hospital
| | - Chao-Hung Wang
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
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27
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Hegner B, Lange M, Kusch A, Essin K, Sezer O, Schulze-Lohoff E, Luft FC, Gollasch M, Dragun D. mTOR regulates vascular smooth muscle cell differentiation from human bone marrow-derived mesenchymal progenitors. Arterioscler Thromb Vasc Biol 2008; 29:232-8. [PMID: 19074484 DOI: 10.1161/atvbaha.108.179457] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
OBJECTIVE Vascular smooth muscle cells (VSMCs) and circulating mesenchymal progenitor cells (MSCs) with a VSMC phenotype contribute to neointima formation and lumen loss after angioplasty and during allograft arteriosclerosis. We hypothesized that phosphoinositol-Akt-mammalian target of rapamycin-p70S6 kinase (PI3K/Akt/mTOR/p70S6K) pathway activation regulates VSMC differentiation from MSCs. METHODS AND RESULTS We studied effects of PI3K/Akt/mTOR signaling on phenotypic modulation of MSC and VSMC marker expression, including L-type Ca(2+) channels. Phosphorylation of Akt and p70S6K featured downregulation of VSMC markers in dedifferentiated MSCs. mTOR inhibition with rapamycin at below pharmacological concentrations blocked p70S6K phosphorylation and induced a differentiated contractile phenotype with smooth muscle (sm)-calponin, sm-alpha-actin, and SM protein 22-alpha (SM22alpha) expression. The PI3K inhibitor Ly294002 abolished Akt and p70S6K phosphorylation and reversed the dedifferentiated phenotype via induction of sm-calponin, sm-alpha-actin, SM22alpha, and myosin light chain kinase. Rapamycin acted antiproliferative without impairing MSC viability. In VSMCs, rapamycin increased a homing chemokine for MSCs, stromal cell-derived factor-1-alpha, at mRNA and protein levels. The CXCR4-mediated MSC migration toward conditioned medium of rapamycin-treated VSMCs was enhanced. CONCLUSIONS We describe novel pleiotropic effects of rapamycin at very low concentrations that stabilized differentiated contractile VSMCs from MSCs in addition to exerting antiproliferative and enhanced homing effects.
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Affiliation(s)
- Björn Hegner
- Clinic for Nephrology and Intensive Care Medicine, Charité Campus Virchow Klinihum, Augustenburger Platz 1, 13353 Berlin, Germany
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28
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Hohensinner PJ, Kaun C, Rychli K, Niessner A, Pfaffenberger S, Rega G, Furnkranz A, Uhrin P, Zaujec J, Afonyushkin T, Bochkov VN, Maurer G, Huber K, Wojta J. The inflammatory mediator oncostatin M induces stromal derived factor‐1 in human adult cardiac cells. FASEB J 2008; 23:774-82. [DOI: 10.1096/fj.08-108035] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- P. J. Hohensinner
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
- Ludwig Boltzmann Cluster for Cardiovascular ResearchViennaAustria
| | - C. Kaun
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - K. Rychli
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - A. Niessner
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - S. Pfaffenberger
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - G. Rega
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - A. Furnkranz
- Third Department of MedicineWilhelminenhospitalViennaAustria
| | - P. Uhrin
- Department of Vascular Biology and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - J. Zaujec
- Department of Vascular Biology and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - T. Afonyushkin
- Department of Vascular Biology and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - V. N. Bochkov
- Department of Vascular Biology and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - G. Maurer
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
| | - K. Huber
- Third Department of MedicineWilhelminenhospitalViennaAustria
| | - J. Wojta
- Department of Internal Medicine II and and Thrombosis ResearchMedical University of ViennaViennaAustria
- Ludwig Boltzmann Cluster for Cardiovascular ResearchViennaAustria
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29
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Affiliation(s)
- Andreas Schober
- From the Cardiology Unit, Medical Policlinic-City Center Campus, University of Munich, Germany
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30
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Guerin E, Sheridan C, Assheton D, Kent D, Wong D, Grant M, Hiscott P. SDF1-alpha is associated with VEGFR-2 in human choroidal neovascularisation. Microvasc Res 2007; 75:302-7. [PMID: 18234239 DOI: 10.1016/j.mvr.2007.12.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2007] [Revised: 10/26/2007] [Accepted: 12/02/2007] [Indexed: 01/07/2023]
Abstract
Endothelial progenitor cells (EPCs) have been shown to contribute to experimentally induced choroidal neovascularisation (CNV) in animal models. The recruitment pathway for EPCs is dependent on the chemokine stromal cell derived factor 1-alpha (SDF) and its receptor CXCR4 on the progenitor cell. We examined 23 specimens of CNV occurring secondary to a variety of aetiologies (10 secondary to age-related macular degeneration (AMD), 4 inflammatory, 4 idiopathic and 5 melanoma-associated) for the presence and distribution of SDF and CXCR4 in order to determine if this pathway may play a role in neovascularisation. Specimens were examined by immunohistochemistry using a panel of antibodies against SDF, CXCR4, vascular endothelial growth factor receptor 2 (VEGFR-2), CD34 (endothelial cells), CD68 (macrophages) and cytokeratins (retinal pigment epithelium; RPE). SDF was detected in 2 cases of CNV in AMD, 1 inflammatory CNV, 3 idiopathic CNVs and in 3 cases of CNV associated with melanoma. A significant association was found between SDF and VEGFR-2 immunostaining in individual membranes (p<0.001). Localisation of SDF immunostaining to the presumed RPE was also significant (p<0.05). CXCR4 immunostaining was widespread in all membranes in keeping with the published work of other investigators. Our study suggests that SDF, which may be produced by the RPE, could play a role in CNV.
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Affiliation(s)
- Eoin Guerin
- Unit of Ophthalmology, Department of Clinical Sciences, UCD, Duncan Building, University of Liverpool, Daulby Street, Liverpool, L69 3GA, United Kingdom.
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31
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Badillo AT, Chung S, Zhang L, Zoltick P, Liechty KW. Lentiviral gene transfer of SDF-1alpha to wounds improves diabetic wound healing. J Surg Res 2007; 143:35-42. [PMID: 17950070 DOI: 10.1016/j.jss.2007.03.051] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2007] [Revised: 03/01/2007] [Accepted: 03/04/2007] [Indexed: 10/22/2022]
Abstract
BACKGROUND Chronic wounds continue to be a major clinical problem and novel therapeutic approaches are needed. We have previously demonstrated that treatment of diabetic mouse wounds with local application of stromal progenitor cells results in improved healing and increased production of stromal-derived growth factor-1alpha (SDF-1alpha). We hypothesized that lentiviral-mediated increased production of SDF-1alpha in the wound environment could also improve diabetic wound healing. MATERIALS AND METHODS Full-thickness excisional wounds were created in Db-/Db- mice and immediately treated with 10(6), 10(8), or 10(9) plaque-forming units of a lentiviral construct containing GFP-SDF-1alpha or GFP alone. At 7 and 14 days post wounding, wounds were harvested for histological and molecular analysis. RESULTS At 7 days, Db-/Db- wounds treated with lenti GFP-SDF-1alpha exhibited a decrease in wound surface area for all doses tested. Morphologically, SDF-treated wounds were more cellular with increased granulation tissue volume compared to controls (P < 0.05). GFP expression was maintained in treated tissue at 7 days post wounding, but little expression was observed at 14 days. While we did not observe a difference in the gross wound surface area at 14 days, histological analysis revealed that SDF-treated wounds were fully epithelialized (n = 6) compared to only one of six controls. CONCLUSIONS Lentiviral-mediated overproduction of SDF-1alpha is sufficient to correct the pathophysiologic abnormalities in diabetic wound healing resulting in complete epithelialization at 2 weeks. SDF-1alpha-mediated improvement in diabetic wound healing has significant implications for the development of novel therapeutic strategies to facilitate wound closure which target progenitor cell mobilization and recruitment.
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Affiliation(s)
- Andrea T Badillo
- The Center for Fetal Research at The Children's Hospital of Philadelphia, The University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
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32
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Hu X, Dai S, Wu WJ, Tan W, Zhu X, Mu J, Guo Y, Bolli R, Rokosh G. Stromal cell derived factor-1 alpha confers protection against myocardial ischemia/reperfusion injury: role of the cardiac stromal cell derived factor-1 alpha CXCR4 axis. Circulation 2007; 116:654-63. [PMID: 17646584 PMCID: PMC3640445 DOI: 10.1161/circulationaha.106.672451] [Citation(s) in RCA: 261] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Stromal cell-derived factor-1alpha (SDF-1alpha) binding to its cognate receptor, CXCR4, regulates a variety of cellular functions such as stem cell homing, trafficking, and differentiation. However, the role of the SDF-1alpha-CXCR4 axis in modulating myocardial ischemia/reperfusion injury is unknown. METHODS AND RESULTS In mice subjected to ischemic preconditioning, myocardial SDF-1alpha mRNA was found to be increased 3 hours later (P<0.05). Myocardial SDF-1alpha and CXCR4 mRNA and protein were found to be expressed in both cardiac myocytes and fibroblasts. SDF-1alpha production increased significantly after 1 or 4 hours of hypoxia and 18 hours of reoxygenation in cultured myocytes (P<0.05) but did not change in fibroblast cultures. In isolated myocytes, CXCR4 activation by SDF-1alpha resulted in increased phosphorylation of both ERK 1/2 and AKT and decreased phosphorylation of JNK and p38. Cultured myocytes pretreated with SDF-1alpha were resistant to hypoxia/reoxygenation damage, exhibiting less lactate dehydrogenase release, trypan blue uptake, and apoptotic cell death (terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay) (P<0.05). This protective effect was blocked by the CXCR4 selective antagonist AMD3100. In vivo, administration of SDF-1alpha before 30 minutes of coronary occlusion followed by 4 hours of reperfusion decreased infarct size (P<0.05). The decrease in infarct size with SDF-1alpha administration also was blocked by AMD3100. CONCLUSIONS We conclude that SDF-1alpha and its receptor, CXCR4, constitute a paracrine or autocrine axis in cardiac myocytes that is activated in response to preconditioning and hypoxic stimuli, recruiting the antiapoptotic kinases ERK and AKT and promoting an antiapoptotic program that confers protection against ischemia/reperfusion damage.
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Affiliation(s)
- Xiaofeng Hu
- Institute of Molecular Cardiology, Division of Cardiology, University of Louisville, Louisville, KY 40202, USA
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Hoffmann U, Banas B, Krüger B, Banas M, Bergler T, Böger C, Kammerl M, Obed A, Rümmele P, Segerer S, Riegger GAJ, Krämer BK. SDF-1 expression is elevated in chronic human renal allograft rejection. Clin Transplant 2006; 20:712-8. [PMID: 17100720 DOI: 10.1111/j.1399-0012.2006.00540.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The exact mechanism of acute and chronic allograft rejection still remains unclear. The chemokine SDF-1 as mediator of allograft rejection has been under intensive investigation in liver, cardiac and bone marrow transplantation, whereas in renal transplantation, there are no reports about SDF-1 to date. This study was performed to evaluate if SDF-1 might also play an important role in human renal graft biopsies. One hundred and ninety formalin-fixed, paraffin-embedded renal allograft biopsies were included in the analysis from patients with normal renal graft morphology (according to Banff 97 classification grade 1, n = 84), with acute interstitial rejection (Banff grade 4 type I, n = 10), with acute vascular rejection (Banff grade 4 type II, n = 21), with chronic allograft nephropathy (CAN, Banff grade 5, n = 23), and without rejection but with various other lesions (Banff grade 6, n = 42). SDF-1 was localized by immunohistochemistry. In biopsies with CAN, SDF-1 expression was significantly elevated in interstitial infiltrates and infiltrating neointimal cells of arteries compared with biopsies with normal renal graft morphology. This is the first study describing a role of SDF-1 in human renal allograft rejection. We were able to demonstrate in a large number of biopsies an upregulation of SDF-1 in patients with CAN. Whether SDF-1 has pro-inflammatory or protective properties in this setting has to be evaluated in further trials.
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Affiliation(s)
- U Hoffmann
- Klinik und Poliklinik für Innere Medizin II, University of Regensburg, Regensburg, Germany.
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Segret A, Rücker-Martin C, Pavoine C, Flavigny J, Deroubaix E, Châtel MA, Lombet A, Renaud JF. Structural localization and expression of CXCL12 and CXCR4 in rat heart and isolated cardiac myocytes. J Histochem Cytochem 2006; 55:141-50. [PMID: 17046839 DOI: 10.1369/jhc.6a7050.2006] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
CXCL12 (SDF-1), which binds CXCR4, is involved in several physiological and pathophysiological processes. In heart, this axis seems to play a key role in cardiogenesis and is involved in the neovascularization of ischemic tissues. Rats have three known CXCL12 mRNA isoforms, of which only alpha and gamma are present in the normal heart. However, little is known about CXCL12 protein expression and localization. We investigated the pattern of protein expression and the localization of both CXCR4 and CXCL12 in the heart, using isolated cardiomyocytes and a rat myocardial infarction model. Western blots showed that cardiomyocytes contained a specific 67-kDa CXCR4 isoform and a 12-kDa CXCL12 isoform. Confocal and electron microscopy clearly showed that CXCR4 was present at the plasmalemma and CXCL12 in continuity of the Z-line, in the proximal part of T-tubules. In conclusion, we provide the first description of the expression and fine localization of CXCR4 and CXCL12 proteins in normal rat heart and cardiomyocytes. These results suggest that the CXCL12/CXCR4 axis may be involved in cardiomyocyte calcium homeostasis regulation. Our work and the well-known chemoattraction properties of the CXCL12/CXCR4 axis highlight the importance of deciphering the function of this axis in both normal and pathological hearts.
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MESH Headings
- Animals
- Chemokine CXCL12
- Chemokines, CXC/biosynthesis
- Chemokines, CXC/metabolism
- Male
- Microscopy, Confocal
- Microscopy, Electron, Transmission
- Myocardial Infarction/metabolism
- Myocardium/metabolism
- Myocardium/ultrastructure
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/ultrastructure
- Protein Isoforms/metabolism
- Rats
- Rats, Wistar
- Receptors, CXCR4/biosynthesis
- Receptors, CXCR4/metabolism
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Affiliation(s)
- Audrey Segret
- CNRS-UMR 8162, Université Paris XI Sud, Hôpital Marie Lannelongue, 133 avenue de la Résistance, 92350 Le Plessis-Robinson, France.
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Wang Y, Haider HK, Ahmad N, Zhang D, Ashraf M. Evidence for ischemia induced host-derived bone marrow cell mobilization into cardiac allografts. J Mol Cell Cardiol 2006; 41:478-87. [PMID: 16926022 DOI: 10.1016/j.yjmcc.2006.06.074] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2006] [Revised: 06/13/2006] [Accepted: 06/29/2006] [Indexed: 01/07/2023]
Abstract
Mobilized bone marrow stem cells (BMSC) exhibit high degree of plasticity and participate in the repair process in the event of myocardial damage. In this study, we verified the proportional contribution of recipient BMSC in the repair process and identified their specific surface markers. Wild-type (WT) donor female heart was transplanted into abdominal cavity of male rat (Group I). In some of recipient animals, infarction was created by LAD occlusion (Group II). Two weeks later, transplanted female hearts were harvested for histological analysis of the mobilized cells. C-kit, CD31, Ki67 and Y-chromosome were used as markers to identify mobilized cells in the female hearts. Y-chromosome positive cells were found in the donor female cardiac allografts. Acute myocardial infarction (AMI) of recipient heart induced migration of progenitor cells into the lesions of chronic rejection in the allograft. Donor ventricular mass reduction was more pronounced in Group I. Endothelial progenitor cells induced by AMI from male recipient extensively migrated into the cardiac allograft. SDF-1 mRNA levels significantly increased (peak level at 24 h after AMI) in recipient heart. CXCR4 was strongly expressed in the transplanted hearts around the perivascular area. Spontaneous mobilization of hematopoietic progenitor cells (HPCs) occurred in cardiac allografts after creating recipient heart AMI and was detectable until 2 weeks. These data suggests that CXCR4 overexpression enhances vascularization in the damaged myocardium and SDF-1/CXCR4 axis seems particularly important in progenitor cell chemotaxis, homing, engraftment and retention in damaged myocardium. In addition, BMSC attracted to the site of ischemic injury participate in cardiac repair.
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Affiliation(s)
- Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati Medical Center, College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0529, USA
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