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Takematsu E, Massidda M, Auster J, Chen PC, Im B, Srinath S, Canga S, Singh A, Majid M, Sherman M, Dunn A, Graham A, Martin P, Baker AB. Transmembrane stem cell factor protein therapeutics enhance revascularization in ischemia without mast cell activation. Nat Commun 2022; 13:2497. [PMID: 35523773 PMCID: PMC9076913 DOI: 10.1038/s41467-022-30103-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 04/08/2022] [Indexed: 11/30/2022] Open
Abstract
Stem cell factor (SCF) is a cytokine that regulates hematopoiesis and other biological processes. While clinical treatments using SCF would be highly beneficial, these have been limited by toxicity related to mast cell activation. Transmembrane SCF (tmSCF) has differential activity from soluble SCF and has not been explored as a therapeutic agent. We created novel therapeutics using tmSCF embedded in proteoliposomes or lipid nanodiscs. Mouse models of anaphylaxis and ischemia revealed the tmSCF-based therapies did not activate mast cells and improved the revascularization in the ischemic hind limb. Proteoliposomal tmSCF preferentially acted on endothelial cells to induce angiogenesis while tmSCF nanodiscs had greater activity in inducing stem cell mobilization and recruitment to the site of injury. The type of lipid nanocarrier used altered the relative cellular uptake pathways and signaling in a cell type dependent manner. Overall, we found that tmSCF-based therapies can provide therapeutic benefits without off target effects.
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Affiliation(s)
- Eri Takematsu
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Miles Massidda
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Jeff Auster
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Po-Chih Chen
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - ByungGee Im
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Sanjana Srinath
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Sophia Canga
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Aditya Singh
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Marjan Majid
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Michael Sherman
- Department of Biochemistry & Molecular Biology, University of Texas Medical Branch, Galveston, TX, USA
| | - Andrew Dunn
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Annette Graham
- Department of Biological and Biomedical Sciences, School of Health and Life Sciences, Glasgow Caledonian University, G4 0BA, Scotland, UK
| | - Patricia Martin
- Department of Biological and Biomedical Sciences, School of Health and Life Sciences, Glasgow Caledonian University, G4 0BA, Scotland, UK
| | - Aaron B Baker
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA.
- Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, USA.
- The Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, TX, USA.
- Institute for Biomaterials, Drug Delivery and Regenerative Medicine, University of Texas at Austin, Austin, TX, USA.
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2
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Liu R, Li J, Liu Y, Peng J, Guan X. The Effect of Astragaloside on Pacemaker Current and the Cytoskeleton in Rabbit Sinoatrial Node Cells Under the Ischemia and Reperfusion Condition. Front Pharmacol 2018; 9:551. [PMID: 29899698 PMCID: PMC5988886 DOI: 10.3389/fphar.2018.00551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 05/08/2018] [Indexed: 11/13/2022] Open
Abstract
Objective: We investigated the role of astragaloside in the treatment of sick sinus syndrome (SSS). Methods: Neonatal New Zealand rabbits were selected for the study. Rabbit sinoatrial node (SAN) cells were isolated by the method of dual enzymatic digestion and differential adherence. The injury model was prepared through simulated ischemia and reperfusion (I/R), and changes in the pacemaker current (If) were recorded using the whole-cell patch-clamp technique. The proteins F-actin and vinculin were examined between various groups of SAN cells using a microplate reader and laser scanning confocal microscopy. The mRNA level and protein expression of hyperpolarization-activated cyclic nucleotide gated potassium channel 4 (HCN4) were assessed by q-PCR and western blot method. Results: The peak current density of If was decreased to -19.64 ± 2.14 pA/pF in SAN cells after simulated I/R, and the difference was highly significant (P < 0.01). Following simulated I/R, 100, 200, or 300 μmol L-1 astragaloside was added to the extracellular solution of SAN cells; the peak current density of the If increased to -30.43 ± 1.98, -34.83 ± 1.6, and -52.72 ± 1.7 pA/pF, respectively (P < 0.01). Adding 100 μmol L-1 astragaloside to normal SAN cells also led to an enhanced peak current density of the If (P < 0.05). In a concentration-dependent manner, especially at 300 μmol/L, astragaloside was capable of increasing the expression of HCN4 and protecting the structural stability of F-actin and vinculin in the damaged SAN cells. Conclusion: We estimated that astragaloside could shorten the action potential duration 20 (APD20) and APD50 in damaged SAN cells of neonatal rabbits, thereby increasing the expression of HCN4 and the If current density in damaged SAN cells of neonatal rabbits in a voltage-dependent manner, accelerating the steady-state activation of the If channels, and protecting damaged cytoskeleton.
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Affiliation(s)
- Ruxiu Liu
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jie Li
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yu Liu
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jie Peng
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xuanke Guan
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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3
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Zhang L, Wang X, Wu Y, Lu X, Chidiac P, Wang G, Feng Q. Maternal diabetes up-regulates NOX2 and enhances myocardial ischaemia/reperfusion injury in adult offspring. J Cell Mol Med 2018; 22:2200-2209. [PMID: 29377505 PMCID: PMC5867143 DOI: 10.1111/jcmm.13500] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 11/18/2017] [Indexed: 01/08/2023] Open
Abstract
Offspring of diabetic mothers are at risk of cardiovascular diseases in adulthood. However, the underlying molecular mechanisms are not clear. We hypothesize that prenatal exposure to maternal diabetes up‐regulates myocardial NOX2 expression and enhances ischaemia/reperfusion (I/R) injury in the adult offspring. Maternal diabetes was induced in C57BL/6 mice by streptozotocin. Glucose‐tolerant adult offspring of diabetic mothers and normal controls were subjected to myocardial I/R injury. Vascular endothelial growth factor (VEGF) expression, ROS generation, myocardial apoptosis and infarct size were assessed. The VEGF‐Akt (protein kinase B)‐mammalian target of rapamycin (mTOR)‐NOX2 signalling pathway was also studied in cultured cardiomyocytes in response to high glucose level. In the hearts of adult offspring from diabetic mothers, increases were observed in VEGF expression, NOX2 protein levels and both Akt and mTOR phosphorylation levels as compared to the offspring of control mothers. After I/R, ROS generation, myocardial apoptosis and infarct size were all significantly higher in the offspring of diabetic mothers relative to offspring of control mothers, and these differences were diminished by in vivo treatment with the NADPH oxidase inhibitor apocynin. In cultured cardiomyocytes, high glucose increased mTOR phosphorylation, which was inhibited by the PI3 kinase inhibitor LY294002. Notably, high glucose‐induced NOX2 protein expression and ROS production were inhibited by rapamycin. In conclusion, maternal diabetes promotes VEGF‐Akt‐mTOR‐NOX2 signalling and enhances myocardial I/R injury in the adult offspring. Increased ROS production from NOX2 is a possible molecular mechanism responsible for developmental origins of cardiovascular disease in offspring of diabetic mothers.
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Affiliation(s)
- Lili Zhang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Xiaoyan Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Yan Wu
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiangru Lu
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Peter Chidiac
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Guoping Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingping Feng
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
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4
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Ngkelo A, Richart A, Kirk JA, Bonnin P, Vilar J, Lemitre M, Marck P, Branchereau M, Le Gall S, Renault N, Guerin C, Ranek MJ, Kervadec A, Danelli L, Gautier G, Blank U, Launay P, Camerer E, Bruneval P, Menasche P, Heymes C, Luche E, Casteilla L, Cousin B, Rodewald HR, Kass DA, Silvestre JS. Mast cells regulate myofilament calcium sensitization and heart function after myocardial infarction. J Exp Med 2017; 213:1353-74. [PMID: 27353089 PMCID: PMC4925026 DOI: 10.1084/jem.20160081] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 05/12/2016] [Indexed: 11/24/2022] Open
Abstract
Ngkelo et al. use a mast cell–deficient mouse model to reveal a protective role of mast cells in myocardial infarction, through regulation of the cardiac contractile machinery. Acute myocardial infarction (MI) is a severe ischemic disease responsible for heart failure and sudden death. Inflammatory cells orchestrate postischemic cardiac remodeling after MI. Studies using mice with defective mast/stem cell growth factor receptor c-Kit have suggested key roles for mast cells (MCs) in postischemic cardiac remodeling. Because c-Kit mutations affect multiple cell types of both immune and nonimmune origin, we addressed the impact of MCs on cardiac function after MI, using the c-Kit–independent MC-deficient (Cpa3Cre/+) mice. In response to MI, MC progenitors originated primarily from white adipose tissue, infiltrated the heart, and differentiated into mature MCs. MC deficiency led to reduced postischemic cardiac function and depressed cardiomyocyte contractility caused by myofilament Ca2+ desensitization. This effect correlated with increased protein kinase A (PKA) activity and hyperphosphorylation of its targets, troponin I and myosin-binding protein C. MC-specific tryptase was identified to regulate PKA activity in cardiomyocytes via protease-activated receptor 2 proteolysis. This work reveals a novel function for cardiac MCs modulating cardiomyocyte contractility via alteration of PKA-regulated force–Ca2+ interactions in response to MI. Identification of this MC-cardiomyocyte cross-talk provides new insights on the cellular and molecular mechanisms regulating the cardiac contractile machinery and a novel platform for therapeutically addressable regulators.
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Affiliation(s)
- Anta Ngkelo
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Adèle Richart
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Jonathan A Kirk
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD 212015
| | - Philippe Bonnin
- INSERM, U965, Hôpital Lariboisière-Fernand-Widal, Assistance Publique Hôpitaux de Paris, F-75010 Paris, France
| | - Jose Vilar
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Mathilde Lemitre
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Pauline Marck
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, F-31004 Toulouse, France
| | - Maxime Branchereau
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, F-31004 Toulouse, France
| | - Sylvain Le Gall
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Nisa Renault
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Coralie Guerin
- National Cytometry Platform, Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg
| | - Mark J Ranek
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD 212015
| | - Anaïs Kervadec
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Luca Danelli
- Laboratoire d'Excellence INFLAMEX, Université Paris Diderot, Sorbonne Paris Cité, F-75018 Paris, France INSERM, U1149, F-75018 Paris, France Centre National de la Recherche Scientifique (CNRS) ERL 8252, F-75018 Paris, France
| | - Gregory Gautier
- Laboratoire d'Excellence INFLAMEX, Université Paris Diderot, Sorbonne Paris Cité, F-75018 Paris, France INSERM, U1149, F-75018 Paris, France
| | - Ulrich Blank
- Laboratoire d'Excellence INFLAMEX, Université Paris Diderot, Sorbonne Paris Cité, F-75018 Paris, France INSERM, U1149, F-75018 Paris, France Centre National de la Recherche Scientifique (CNRS) ERL 8252, F-75018 Paris, France
| | - Pierre Launay
- Laboratoire d'Excellence INFLAMEX, Université Paris Diderot, Sorbonne Paris Cité, F-75018 Paris, France INSERM, U1149, F-75018 Paris, France
| | - Eric Camerer
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
| | - Patrick Bruneval
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France Hôpital European George Pompidou, Assistance Publique Hôpitaux de Paris, F-75015 Paris, France
| | - Philippe Menasche
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France Hôpital European George Pompidou, Assistance Publique Hôpitaux de Paris, F-75015 Paris, France
| | - Christophe Heymes
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, F-31004 Toulouse, France
| | - Elodie Luche
- STROMALab, Etablissement Français du Sang, INSERM U1031, CNRS ERL 5311, Université de Toulouse, F-31004 Toulouse, France
| | - Louis Casteilla
- STROMALab, Etablissement Français du Sang, INSERM U1031, CNRS ERL 5311, Université de Toulouse, F-31004 Toulouse, France
| | - Béatrice Cousin
- STROMALab, Etablissement Français du Sang, INSERM U1031, CNRS ERL 5311, Université de Toulouse, F-31004 Toulouse, France
| | - Hans-Reimer Rodewald
- Division of Cellular Immunology, German Cancer Research Center, D-69120 Heidelberg, Germany
| | - David A Kass
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD 212015
| | - Jean-Sébastien Silvestre
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS-970, Centre de Recherche Cardiovasculaire, Université Paris Descartes, Sorbonne Paris Cité, F-75015 Paris, France
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5
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Zhang L, Lu X, Gui L, Wu Y, Sims SM, Wang G, Feng Q. Inhibition of Rac1 reduces store overload-induced calcium release and protects against ventricular arrhythmia. J Cell Mol Med 2016; 20:1513-22. [PMID: 27222313 PMCID: PMC4956946 DOI: 10.1111/jcmm.12840] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/14/2016] [Indexed: 12/20/2022] Open
Abstract
Rac1 is a small GTPase and plays key roles in multiple cellular processes including the production of reactive oxygen species (ROS). However, whether Rac1 activation during myocardial ischaemia and reperfusion (I/R) contributes to arrhythmogenesis is not fully understood. We aimed to study the effects of Rac1 inhibition on store overload‐induced Ca2+ release (SOICR) and ventricular arrhythmia during myocardial I/R. Adult Rac1f/f and cardiac‐specific Rac1 knockdown (Rac1ckd) mice were subjected to myocardial I/R and their electrocardiograms (ECGs) were monitored for ventricular arrhythmia. Myocardial Rac1 activity was increased and ventricular arrhythmia was induced during I/R in Rac1f/f mice. Remarkably, I/R‐induced ventricular arrhythmia was significantly decreased in Rac1ckd compared to Rac1f/f mice. Furthermore, treatment with Rac1 inhibitor NSC23766 decreased I/R‐induced ventricular arrhythmia. Ca2+ imaging analysis showed that in response to a 6 mM external Ca2+ concentration challenge, SOICR was induced with characteristic spontaneous intracellular Ca2+ waves in Rac1f/f cardiomyocytes. Notably, SOICR was diminished by pharmacological and genetic inhibition of Rac1 in adult cardiomyocytes. Moreover, I/R‐induced ROS production and ryanodine receptor 2 (RyR2) oxidation were significantly inhibited in the myocardium of Rac1ckd mice. We conclude that Rac1 activation induces ventricular arrhythmia during myocardial I/R. Inhibition of Rac1 suppresses SOICR and protects against ventricular arrhythmia. Blockade of Rac1 activation may represent a new paradigm for the treatment of cardiac arrhythmia in ischaemic heart disease.
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Affiliation(s)
- Lili Zhang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada
| | - Xiangru Lu
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada
| | - Le Gui
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada.,Nantong University Medical School, Nantong, China
| | - Yan Wu
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada.,Metabolic Syndrome Research Center, Second Xiangya Hospital, Central South University, Changsha, China
| | - Stephen M Sims
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada
| | - Guoping Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingping Feng
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada.,Lawson Health Research Institute, London, ON, Canada
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6
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Zhou X, Sheng X, Chen M, Wang Z, Yu L, Jiang H. Tumor necrosis factor-α inhibitor: A promising therapeutic approach for attenuating myocardial ischemia–reperfusion by antioxidant stress. Int J Cardiol 2015; 190:282-3. [DOI: 10.1016/j.ijcard.2015.04.194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 04/23/2015] [Indexed: 11/17/2022]
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7
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Nigro P, Perrucci GL, Gowran A, Zanobini M, Capogrossi MC, Pompilio G. c-kit(+) cells: the tell-tale heart of cardiac regeneration? Cell Mol Life Sci 2015; 72:1725-40. [PMID: 25575564 PMCID: PMC11113938 DOI: 10.1007/s00018-014-1832-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/18/2014] [Accepted: 12/30/2014] [Indexed: 12/21/2022]
Abstract
Cardiovascular disease is the leading cause of morbidity and mortality in the developed world. Although ongoing therapeutic strategies ameliorate symptoms and prolong life for patients with cardiovascular diseases, they do not solve the critical issue related to the loss of cardiac tissue. Accordingly, stem/progenitor cell therapy has emerged as a paramount approach for cardiac repair and regeneration. In this regard, c-kit(+) cells have animated much interest and controversy. These cells are self-renewing, clonogenic, and multipotent and display a noteworthy potential to differentiate into all cardiovascular lineages. However, their functional contribution to cardiomyocyte turnover is one of the centrally debated issues concerning their regenerative potential. Regardless, plentiful preclinical and clinical studies have been conducted which provide evidence for the capacity of c-kit(+) cells to improve cardiac function. The purpose of this review is to give a comprehensive, impartial, critical description and evaluation of the literature on c-kit(+) cells from bench to bedside in order to address their true potential, benefits and controversies.
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Affiliation(s)
- Patrizia Nigro
- Laboratory of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino-IRCCS, Via Parea 4, 20138, Milan, Italy,
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8
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Xiang FL, Liu Y, Lu X, Jones DL, Feng Q. Cardiac-Specific Overexpression of Human Stem Cell Factor Promotes Epicardial Activation and Arteriogenesis After Myocardial Infarction. Circ Heart Fail 2014; 7:831-42. [DOI: 10.1161/circheartfailure.114.001423] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background—
The adult epicardium is a potential source of cardiac progenitors after myocardial infarction (MI). We tested the hypothesis that cardiomyocyte-specific overexpression of membrane-associated human stem cell factor (hSCF) enhances epicardial activation, epicardium-derived cells (EPDCs) production, and myocardial arteriogenesis post MI.
Methods and Results—
Wild-type and the inducible cardiac-specific hSCF transgenic (hSCF/tetracycline transactivator) mice were subjected to MI. Wilms tumor-1 (Wt1)–positive epicardial cells were higher in hSCF/tetracycline transactivator compared with wild-type mice 3 days post MI. Arteriole density was significantly higher in the peri-infarct area of hSCF/tetracycline transactivator mice compared with wild-type mice 5 days post MI. In cultured EPDCs, adenoviral hSCF treatment significantly increased cell proliferation and growth factor expression. Furthermore, adenoviral hSCF treatment in wild-type cardiomyocytes significantly increased EPDC migration. These effects of hSCF overexpression on EPDC proliferation and growth factor expression were all abrogated by ACK2, a neutralizing antibody against
c-kit
. Finally, lineage tracing using ROSA
mTmG
;Wt1
CreER
mice showed that adenoviral hSCF treatment increased Wt1
+
lineage–derived EPDC migration into the infarcted myocardium 5 days post MI, which was inhibited by ACK2.
Conclusions—
Cardiomyocyte-specific overexpression of hSCF promotes epicardial activation and myocardial arteriogenesis post MI.
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Affiliation(s)
- Fu-Li Xiang
- From the Departments of Physiology and Pharmacology (F.-L.X., Y.L., X.L., D.L.J., Q.F.) and Medicine (D.L.J., Q.F.), and Lawson Health Research Institute (D.L.J., Q.F.), Western University, London, Ontario, Canada
| | - Yin Liu
- From the Departments of Physiology and Pharmacology (F.-L.X., Y.L., X.L., D.L.J., Q.F.) and Medicine (D.L.J., Q.F.), and Lawson Health Research Institute (D.L.J., Q.F.), Western University, London, Ontario, Canada
| | - Xiangru Lu
- From the Departments of Physiology and Pharmacology (F.-L.X., Y.L., X.L., D.L.J., Q.F.) and Medicine (D.L.J., Q.F.), and Lawson Health Research Institute (D.L.J., Q.F.), Western University, London, Ontario, Canada
| | - Douglas L. Jones
- From the Departments of Physiology and Pharmacology (F.-L.X., Y.L., X.L., D.L.J., Q.F.) and Medicine (D.L.J., Q.F.), and Lawson Health Research Institute (D.L.J., Q.F.), Western University, London, Ontario, Canada
| | - Qingping Feng
- From the Departments of Physiology and Pharmacology (F.-L.X., Y.L., X.L., D.L.J., Q.F.) and Medicine (D.L.J., Q.F.), and Lawson Health Research Institute (D.L.J., Q.F.), Western University, London, Ontario, Canada
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9
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Di Scipio F, Sprio A, Folino A, Carere M, Salamone P, Yang Z, Berrone M, Prat M, Losano G, Rastaldo R, Berta G. Injured cardiomyocytes promote dental pulp mesenchymal stem cell homing. Biochim Biophys Acta Gen Subj 2014; 1840:2152-61. [DOI: 10.1016/j.bbagen.2014.03.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 02/28/2014] [Accepted: 03/05/2014] [Indexed: 02/07/2023]
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