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De Bartolo A, Pasqua T, Romeo N, Rago V, Perrotta I, Giordano F, Granieri MC, Marrone A, Mazza R, Cerra MC, Lefranc B, Leprince J, Anouar Y, Angelone T, Rocca C. The redox-active defensive Selenoprotein T as a novel stress sensor protein playing a key role in the pathophysiology of heart failure. J Transl Med 2024; 22:375. [PMID: 38643121 PMCID: PMC11032602 DOI: 10.1186/s12967-024-05192-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/12/2024] [Indexed: 04/22/2024] Open
Abstract
Maladaptive cardiac hypertrophy contributes to the development of heart failure (HF). The oxidoreductase Selenoprotein T (SELENOT) emerged as a key regulator during rat cardiogenesis and acute cardiac protection. However, its action in chronic settings of cardiac dysfunction is not understood. Here, we investigated the role of SELENOT in the pathophysiology of HF: (i) by designing a small peptide (PSELT), recapitulating SELENOT activity via the redox site, and assessed its beneficial action in a preclinical model of HF [aged spontaneously hypertensive heart failure (SHHF) rats] and against isoproterenol (ISO)-induced hypertrophy in rat ventricular H9c2 and adult human AC16 cardiomyocytes; (ii) by evaluating the SELENOT intra-cardiomyocyte production and secretion under hypertrophied stimulation. Results showed that PSELT attenuated systemic inflammation, lipopolysaccharide (LPS)-induced macrophage M1 polarization, myocardial injury, and the severe ultrastructural alterations, while counteracting key mediators of cardiac fibrosis, aging, and DNA damage and restoring desmin downregulation and SELENOT upregulation in the failing hearts. In the hemodynamic assessment, PSELT improved the contractile impairment at baseline and following ischemia/reperfusion injury, and reduced infarct size in normal and failing hearts. At cellular level, PSELT counteracted ISO-mediated hypertrophy and ultrastructural alterations through its redox motif, while mitigating ISO-triggered SELENOT intracellular production and secretion, a phenomenon that presumably reflects the extent of cell damage. Altogether, these results indicate that SELENOT could represent a novel sensor of hypertrophied cardiomyocytes and a potential PSELT-based new therapeutic approach in myocardial hypertrophy and HF.
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Affiliation(s)
- Anna De Bartolo
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
| | - Teresa Pasqua
- Department of Health Science, University Magna Graecia of Catanzaro, 88100, Catanzaro, Italy
| | - Naomi Romeo
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
| | - Vittoria Rago
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - Ida Perrotta
- Centre for Microscopy and Microanalysis (CM2), Department of Biology, E. and E. S. (DiBEST), University of Calabria, 87036, Rende, Italy
| | - Francesca Giordano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - Maria Concetta Granieri
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
| | - Alessandro Marrone
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
| | - Rosa Mazza
- Organ and System Physiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
| | - Maria Carmela Cerra
- Organ and System Physiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
| | - Benjamin Lefranc
- UNIROUEN, Inserm U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication (NorDiC), Rouen Normandie University, 76000, Mont-Saint-Aignan, France
- UNIROUEN, UMS-UAR HERACLES, PRIMACEN, Cell Imaging Platform of Normandy, Institute for Research and Innovation in Biomedicine (IRIB), 76183, Rouen, France
| | - Jérôme Leprince
- UNIROUEN, Inserm U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication (NorDiC), Rouen Normandie University, 76000, Mont-Saint-Aignan, France
- UNIROUEN, UMS-UAR HERACLES, PRIMACEN, Cell Imaging Platform of Normandy, Institute for Research and Innovation in Biomedicine (IRIB), 76183, Rouen, France
| | - Youssef Anouar
- UNIROUEN, Inserm U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication (NorDiC), Rouen Normandie University, 76000, Mont-Saint-Aignan, France
| | - Tommaso Angelone
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy.
- National Institute of Cardiovascular Research (INRC), 40126, Bologna, Italy.
| | - Carmine Rocca
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E. S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
- National Institute of Cardiovascular Research (INRC), 40126, Bologna, Italy
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2
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Thongsuk Y, Hwang NC. Perioperative Glycemic Management in Cardiac Surgery: A Narrative Review. J Cardiothorac Vasc Anesth 2024; 38:248-267. [PMID: 37743132 DOI: 10.1053/j.jvca.2023.08.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 09/26/2023]
Abstract
Diabetes and hyperglycemic events in cardiac surgical patients are associated with postoperative morbidity and mortality. The causes of dysglycemia, the abnormal fluctuations in blood glucose concentrations, in the perioperative period include surgical stress, surgical techniques, medications administered perioperatively, and patient factors. Both hyperglycemia and hypoglycemia lead to poor outcomes after cardiac surgery. While trying to control blood glucose concentration tightly for better postoperative outcomes, hypoglycemia is the main adverse event. Currently, there is no definite consensus on the optimum perioperative blood glucose concentration to be maintained in cardiac surgical patients. This review provides an overview of perioperative glucose homeostasis, the pathophysiology of dysglycemia, factors that affect glycemic control in cardiac surgery, and current practices for glycemic control in cardiac surgery.
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Affiliation(s)
- Yada Thongsuk
- Department of Anesthesiology, King Chulalongkorn Memorial Hospital, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Cardiothoracic Anaesthesia, National Heart Centre, Singapore
| | - Nian Chih Hwang
- Department of Cardiothoracic Anaesthesia, National Heart Centre, Singapore; Department of Anaesthesiology, Singapore General Hospital, Singapore.
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3
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Spiller L, Manjula R, Leissing F, Basquin J, Bourilhon P, Sinitski D, Brandhofer M, Levecque S, Gerra S, Sabelleck B, Zhang L, Feederle R, Flatley A, Hoffmann A, Panstruga R, Bernhagen J, Lolis E. Plant MDL proteins synergize with the cytokine MIF at CXCR2 and CXCR4 receptors in human cells. Sci Signal 2023; 16:eadg2621. [PMID: 37988455 DOI: 10.1126/scisignal.adg2621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 10/27/2023] [Indexed: 11/23/2023]
Abstract
Mammalian macrophage migration inhibitory factor (MIF) and its paralog, D-dopachrome tautomerase, are multifunctional inflammatory cytokines. Plants have orthologous MIF and D-dopachrome tautomerase-like (MDL) proteins that mimic some of the effects of MIF on immune cells in vitro. We explored the structural and functional similarities between the three Arabidopsis thaliana MDLs and MIF. X-ray crystallography of the MDLs revealed high structural similarity between MDL and MIF homotrimers and suggested a potential explanation for the lack of tautomerase activity in the MDLs. MDL1 and MDL2 interacted with each other and with MIF in vitro, in yeast, and in plant leaves and formed hetero-oligomeric complexes with MIF in vitro. The MDLs stimulated signaling through the MIF receptors CXCR2 or CXCR4 and enhanced the responses to MIF in a yeast reporter system, in human neutrophils, and in human lung epithelial cells. Pharmacological inhibitors that disrupted MIF activity or prevented the formation of MIF-MDL hetero-oligomers blocked the observed synergism. These findings demonstrate that MDLs can enhance cellular responses to MIF, which may have functional implications in tissues exposed to MDLs from the diet or environment.
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Affiliation(s)
- Lukas Spiller
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT 06510, USA
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
| | - Ramu Manjula
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT 06510, USA
| | - Franz Leissing
- Unit of Plant Molecular Cell Biology, Institute for Biology I, RWTH Aachen University, 52056 Aachen, Germany
| | - Jerome Basquin
- Department of Structural Cell Biology and Crystallization Facility, Max-Planck-Institute for Biochemistry, 82152 Martinsried, Germany
| | - Priscila Bourilhon
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
| | - Dzmitry Sinitski
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
| | - Markus Brandhofer
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
| | - Sophie Levecque
- Unit of Plant Molecular Cell Biology, Institute for Biology I, RWTH Aachen University, 52056 Aachen, Germany
| | - Simona Gerra
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
| | - Björn Sabelleck
- Unit of Plant Molecular Cell Biology, Institute for Biology I, RWTH Aachen University, 52056 Aachen, Germany
| | - Lin Zhang
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
- Department of Anesthesiology, LMU University Hospital, 81377 Munich, Germany
| | - Regina Feederle
- Monoclonal Antibody Core Facility, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
| | - Andrew Flatley
- Monoclonal Antibody Core Facility, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Adrian Hoffmann
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
- Department of Anesthesiology, LMU University Hospital, 81377 Munich, Germany
| | - Ralph Panstruga
- Unit of Plant Molecular Cell Biology, Institute for Biology I, RWTH Aachen University, 52056 Aachen, Germany
| | - Jürgen Bernhagen
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-Universität (LMU) München, LMU University Hospital, 81377 Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
| | - Elias Lolis
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT 06510, USA
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Onódi Z, Visnovitz T, Kiss B, Hambalkó S, Koncz A, Ágg B, Váradi B, Tóth VÉ, Nagy RN, Gergely TG, Gergő D, Makkos A, Pelyhe C, Varga N, Reé D, Apáti Á, Leszek P, Kovács T, Nagy N, Ferdinandy P, Buzás EI, Görbe A, Giricz Z, Varga ZV. Systematic transcriptomic and phenotypic characterization of human and murine cardiac myocyte cell lines and primary cardiomyocytes reveals serious limitations and low resemblances to adult cardiac phenotype. J Mol Cell Cardiol 2021; 165:19-30. [PMID: 34959166 DOI: 10.1016/j.yjmcc.2021.12.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/19/2021] [Accepted: 12/10/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Cardiac cell lines and primary cells are widely used in cardiovascular research. Despite increasing number of publications using these models, comparative characterization of these cell lines has not been performed, therefore, their limitations are undetermined. We aimed to compare cardiac cell lines to primary cardiomyocytes and to mature cardiac tissues in a systematic manner. METHODS AND RESULTS Cardiac cell lines (H9C2, AC16, HL-1) were differentiated with widely used protocols. Left ventricular tissue, neonatal primary cardiomyocytes, and human induced pluripotent stem cell-derived cardiomyocytes served as reference tissue or cells. RNA expression of cardiac markers (e.g. Tnnt2, Ryr2) was markedly lower in cell lines compared to references. Differentiation induced increase in cardiac- and decrease in embryonic markers however, the overall transcriptomic profile and annotation to relevant biological processes showed consistently less pronounced cardiac phenotype in all cell lines in comparison to the corresponding references. Immunocytochemistry confirmed low expressions of structural protein sarcomeric alpha-actinin, troponin I and caveolin-3 in cell lines. Susceptibility of cell lines to sI/R injury in terms of viability as well as mitochondrial polarization differed from the primary cells irrespective of their degree of differentiation. CONCLUSION Expression patterns of cardiomyocyte markers and whole transcriptomic profile, as well as response to sI/R, and to hypertrophic stimuli indicate low-to-moderate similarity of cell lines to primary cells/cardiac tissues regardless their differentiation. Low resemblance of cell lines to mature adult cardiac tissue limits their potential use. Low translational value should be taken into account while choosing a particular cell line to model cardiomyocytes.
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Affiliation(s)
- Zsófia Onódi
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; HCEMM-SU Cardiometabolic Immunology Research Group, Budapest, Hungary; MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Budapest, Hungary
| | - Tamás Visnovitz
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Bernadett Kiss
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Szabolcs Hambalkó
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Anna Koncz
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Bence Ágg
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; Pharmahungary Group, Szeged, Hungary
| | - Barnabás Váradi
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Viktória É Tóth
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; HCEMM-SU Cardiometabolic Immunology Research Group, Budapest, Hungary; MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Budapest, Hungary
| | - Regina N Nagy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Tamás G Gergely
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; HCEMM-SU Cardiometabolic Immunology Research Group, Budapest, Hungary; MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Budapest, Hungary
| | - Dorottya Gergő
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; HCEMM-SU Cardiometabolic Immunology Research Group, Budapest, Hungary
| | - András Makkos
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Csilla Pelyhe
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Nóra Varga
- Research Centre for Natural Sciences, Institute of Enzymology, Budapest, Hungary; ELKH-Research Centre for Natural Sciences, Institute of Enzymology, Budapest, Hungary
| | - Dóra Reé
- Research Centre for Natural Sciences, Institute of Enzymology, Budapest, Hungary; ELKH-Research Centre for Natural Sciences, Institute of Enzymology, Budapest, Hungary
| | - Ágota Apáti
- Research Centre for Natural Sciences, Institute of Enzymology, Budapest, Hungary; ELKH-Research Centre for Natural Sciences, Institute of Enzymology, Budapest, Hungary
| | - Przemyslaw Leszek
- Department of Heart Failure and Transplantology, Cardinal Stefan Wyszyński National Institute of Cardiology, Warszawa, Poland
| | - Tamás Kovács
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Nándor Nagy
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; Pharmahungary Group, Szeged, Hungary
| | - Edit I Buzás
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary; HCEMM-SU Extracellular Vesicle Research Group, Hungary; ELKH-SE Immune-Proteogenomics Extracellular Vesicle Research Group, Hungary
| | - Anikó Görbe
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; Pharmahungary Group, Szeged, Hungary
| | - Zoltán Giricz
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; Pharmahungary Group, Szeged, Hungary
| | - Zoltán V Varga
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary; HCEMM-SU Cardiometabolic Immunology Research Group, Budapest, Hungary; MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Budapest, Hungary.
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Wu J, Deng X, Gao J, Gao W, Xiao H, Wang X, Zhang Y. Autophagy mediates the secretion of macrophage migration inhibitory factor from cardiomyocytes upon serum-starvation. SCIENCE CHINA-LIFE SCIENCES 2019; 62:1038-1046. [PMID: 31209799 DOI: 10.1007/s11427-019-9567-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 05/13/2019] [Indexed: 12/01/2022]
Abstract
Macrophage migration inhibitory factor (MIF) is an inflammatory cytokine. It is elevated early in the blood of acute myocardial infarction patients. However, it is unclear whether and how MIF is released. This study investigated the cellular source and mechanism of MIF release from hearts. An ischemia-mimic treatment induced the secretion of MIF from neonatal rat cardiomyocytes but not from fibroblasts. The treatment did not cause significant leakage of lactate dehydrogenase, suggesting that ischemia induced the MIF secretion without causing severe cell damage. Plasma samples from patients with acute chest pain at the emergency department were collected for the detection of MIF. MIF levels in patients with acute coronary syndrome (ACS) increased early, when cardiac injury markers were not yet elevated, suggesting that ischemia can induce MIF secretion before the occurrence of severe myocardial damage. Serum-starvation caused MIF secretion from rat cardiomyocytes and Langendorff-perfused rat hearts. The secretion was suppressed by the inhibition of autophagy by inhibitors or by silencing of Atg5. In conclusion, serum-starvation induces the secretion of MIF from cardiomyocytes via autophagy dependent pathway. Clarifying the mechanism of MIF secretion will be helpful for its application in the early diagnosis and treatment of ACS.
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Affiliation(s)
- Jimin Wu
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, 100191, China
- NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Xiangning Deng
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, 100191, China
- NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Juan Gao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, 100191, China
- NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Wei Gao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, 100191, China
- NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Han Xiao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, 100191, China
- NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Xinyu Wang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, 100191, China.
- NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, 100191, China.
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China.
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China.
| | - Youyi Zhang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, 100191, China.
- NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, 100191, China.
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China.
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China.
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6
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Milian ICB, Silva RJ, Manzan-Martins C, Barbosa BF, Guirelli PM, Ribeiro M, de Oliveira Gomes A, Ietta F, Mineo JR, Silva Franco P, Ferro EAV. Increased Toxoplasma gondii Intracellular Proliferation in Human Extravillous Trophoblast Cells (HTR8/SVneo Line) Is Sequentially Triggered by MIF, ERK1/2, and COX-2. Front Microbiol 2019; 10:852. [PMID: 31068920 PMCID: PMC6491458 DOI: 10.3389/fmicb.2019.00852] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/02/2019] [Indexed: 12/27/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is a potent pro-inflammatory cytokine, which mediates the regulation of diverse cellular functions. It is produced by extravillous trophoblastic cells and has been found to be involved in the pathogenesis of diseases caused by some protozoa, including Toxoplasma gondii. Previous studies demonstrated the ability of T. gondii to take advantage of MIF action in human trophoblast cells. However, MIF action in T. gondii-infected extravillous trophoblastic cells (HTR8/SVneo cell line) has not been fully investigated. The present study aimed to investigate the role of MIF in T. gondii-infected HTR8/SVneo cells and verify the intracellular signaling pathways triggered by this cytokine. We found that T. gondii increased MIF production by HTR8/SVneo cells, and by contrast, MIF inhibition, by ISO-1, led to a significant decrease in T. gondii proliferation and CD74 expression in HTR8/SVneo cells. Moreover, in infected HTR8/SVneo cells, the addition of recombinant MIF (rMIF) increased CD44 co-receptor expression, ERK1/2 phosphorylation, COX-2 expression, and IL-8 production, which favored T. gondii proliferation. Our findings indicate that T. gondii can use MIF to modulate important factors in HTR8/SVneo cells, being a possible explanation for the higher susceptibility of extravillous trophoblast cells than other trophoblast cell populations.
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Affiliation(s)
- Iliana Claudia Balga Milian
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
| | - Rafaela José Silva
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
| | - Camilla Manzan-Martins
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
| | - Bellisa Freitas Barbosa
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
| | - Pamela Mendonça Guirelli
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
| | - Mayara Ribeiro
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
| | | | - Francesca Ietta
- Department of Life Sciences, University of Siena, Siena, Italy
| | - José Roberto Mineo
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
| | - Priscila Silva Franco
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
| | - Eloisa Amália Vieira Ferro
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, Brazil
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7
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Zhou H, Sun Y, Zhang L, Kang W, Li N, Li Y. The RhoA/ROCK pathway mediates high glucose-induced cardiomyocyte apoptosis via oxidative stress, JNK, and p38MAPK pathways. Diabetes Metab Res Rev 2018; 34:e3022. [PMID: 29745021 DOI: 10.1002/dmrr.3022] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 04/09/2018] [Accepted: 04/20/2018] [Indexed: 12/21/2022]
Abstract
AIMS To understand the roles of the RhoA/ROCK and mitogen-activated protein kinase (MAPK) pathways in high glucose (HG)-induced apoptosis and oxidative stress in cardiomyocytes. MATERIALS AND METHODS Neonatal rat cardiomyocytes were cultured in Dulbecco's modified Eagle's medium, supplemented with 5.5 or 30 mmol/L D-glucose, in the presence or absence of fasudil (50 or 100 μM), SB203580, SP600125, or PD98059 (10 μM, respectively). The percentage of early apoptotic cardiomyocytes was evaluated using flow cytometry. The superoxide dismutase activity and malondialdehyde contents in the cellular supernatants were measured. The Bax and Bcl-2 mRNA levels were determined by quantitative real-time PCR. Phosphorylation of myosin phosphatase target subunit 1 (MYPT1), p38MAPK, JNK, and ERK as well as the protein levels of Bax, Bcl-2, and cleaved caspase-3 was analysed by Western blot. RESULTS Fasudil, SB203580, and SP600125 effectively inhibited the HG-induced early apoptosis increase and decreased Bax mRNA expression, the Bax/Bcl-2 protein expression ratio, and cleaved caspase-3 protein levels in the cardiomyocytes; this was accompanied by upregulation of the Bcl-2 mRNA. Moreover, fasudil markedly increased the superoxide dismutase activity level and suppressed the elevation in HG-induced malondialdehyde content and the phosphorylation of MYPT1, p38MAPK and JNK. CONCLUSIONS The RhoA/ROCK pathway mediates HG-induced cardiomyocyte apoptosis via oxidative stress and activation of p38MAPK and JNK in neonatal rats in vitro. Fasudil effectively ameliorates HG-induced cardiomyocyte apoptosis by suppressing oxidative stress and the p38MAPK and JNK pathways.
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Affiliation(s)
- Hong Zhou
- Department of Endocrinology, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yonghong Sun
- Nutriology, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lihui Zhang
- Department of Endocrinology, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wenyuan Kang
- Department of Endocrinology, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Na Li
- Department of Endocrinology, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yongjun Li
- Cardiology, the Second Hospital of Hebei Medical University, Shijiazhuang, China
- Hebei Institute of Cardiovascular and Cerebrovascular Diseases, Shijiazhuang, China
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8
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Chen YF, Pandey S, Day CH, Chen YF, Jiang AZ, Ho TJ, Chen RJ, Padma VV, Kuo WW, Huang CY. Synergistic effect of HIF-1α and FoxO3a trigger cardiomyocyte apoptosis under hyperglycemic ischemia condition. J Cell Physiol 2017; 233:3660-3671. [PMID: 29030976 DOI: 10.1002/jcp.26235] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 09/29/2017] [Indexed: 01/19/2023]
Abstract
Cardiomyocyte death is an important pathogenic feature of ischemia and heart failure. Through this study, we showed the synergistic role of HIF-1α and FoxO3a in cardiomyocyte apoptosis subjected to hypoxia plus elevated glucose levels. Using gene specific small interfering RNAs (siRNA), semi-quantitative reverse transcriptase polymerase chain reaction (RT-PCR), Western blot, immunofluorescence, nuclear and cytosolic localization and TUNEL assay techniques, we determined that combined function of HIF-1α and FoxO3a under high glucose plus hypoxia condition lead to enhanced expression of BNIP3 inducing cardiomyocyte death. Our results highlighted the importance of the synergistic role of HIF-1α and FoxO3a in cardiomyocyte death which may add insight into therapeutic approaches to pathophysiology associated with ischemic diabetic cardiomyopathies.
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Affiliation(s)
- Ya-Fang Chen
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Obstetrics and Gynecology, Taichung Veteran's General Hospital, Taichung, Taiwan
| | - Sudhir Pandey
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | | | - Yu-Feng Chen
- Section of Cardiology, Yuan Rung Hospital, Yuanlin, Taiwan
| | - Ai-Zhi Jiang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Tsung-Jung Ho
- School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - Ray-Jade Chen
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Vijaya V Padma
- Department of Biotechnology, Bharathiar University, Coimbatore, India
| | - Wei-Wen Kuo
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan.,Faculty of Applied Sciences, Ton Duc Thang University, Tan Phong Ward, Ho Chi Minh City, Vietnam.,Department of Biological Science and Technology, Asia University, Taichung, Taiwan
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9
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Jiang J, Mo H, Liu C, Wu B, Wu Z, Li X, Li T, He S, Li S, You Q, Wu K, Guo R. Inhibition of miR-186-5p contributes to high glucose-induced injury in AC16 cardiomyocytes. Exp Ther Med 2017; 15:627-632. [PMID: 29399065 PMCID: PMC5772612 DOI: 10.3892/etm.2017.5445] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/04/2017] [Indexed: 01/12/2023] Open
Abstract
A growing body of evidence has demonstrated that microRNAs (miRs) have pivotal roles in the pathophysiological development mechanisms of diabetic cardiomyopathy (DCM). Previous studies have demonstrated that miR-186-5p was significantly decreased in DCM. In addition, it has recently been reported that an imbalance of miR-186 is associated with a variety of physiological and pathological processes. Therefore, the present study was designed to investigate the role of miR-186-5p in high glucose (HG)-induced cytotoxicity and apoptosis in AC16 cardiomyocytes. Reverse transcription-polymerase chain reaction was used to demonstrate the significant decrease in the level of miR-186-5p in HG-treated AC16 cells (P<0.05). Subsequently, it was clarified that pre-transfection with miR-186-5p mimic significantly ameliorated the effects of high glucose, which induced a significant decrease in the viability of AC16 cells (P<0.05) and increases in apoptosis, as evidenced by the appearance of apoptotic nucleus and the significant upregulation of apoptosis rate in AC16 cells (P<0.05). In addition, the significantly increased expression of caspase-3 induced by HG (P<0.01) was also reversed by miR-186-5p mimic (P<0.01). Conversely, transfection with miR-186-5p inhibitor significantly reduced the viability of AC16 cells (P<0.05) and promoted apoptosis (P<0.05) as well as the expression of caspase-3 in AC16 cells (P<0.01), indicating the beneficial role of miR-186-5p in the physiological process of HG-induced damage. In conclusion, these results suggest that the distribution of miR-186-5p contributes to HG-induced cytotoxicity and apoptosis in AC16 cardiomyocytes.
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Affiliation(s)
- Jiamei Jiang
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Hailiang Mo
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Chang Liu
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Bin Wu
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Zijun Wu
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Xingyue Li
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Teng Li
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Songjian He
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Shanghai Li
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Qiong You
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Keng Wu
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Runmin Guo
- Department of Cardiology, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
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10
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Yi B, Hu X, Wen Z, Zhang T, Cai Y. Exendin-4, a glucagon-like peptide-1 receptor agonist, inhibits hyperglycemia-induced apoptosis in myocytes by suppressing receptor for advanced glycation end products expression. Exp Ther Med 2014; 8:1185-1190. [PMID: 25187821 PMCID: PMC4151638 DOI: 10.3892/etm.2014.1873] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 04/29/2014] [Indexed: 11/10/2022] Open
Abstract
Activation of the receptor for advanced glycation end products (RAGE) axis may have an important role in apoptosis. Glucagon-like peptide-1 (GLP-1) is a gut hormone that has been proposed as a therapeutic target for the treatment of diabetes, and GLP-1 receptor agonists have been reported to protect against myocardial injury associated with diabetes. The aim of the present study was to investigate the cardioprotective mechanism of exendin-4 (EX-4), a GLP-1 receptor agonist, against myocardial cell apoptosis induced by hyperglycemia. Neonatal rat ventricular myocytes were prepared by enzymatic dissociation and then cultured with high levels of glucose (HG) in the presence or absence of EX-4. Cell apoptosis was detected using an annexin V-fluorescein isothiocyanate/propidium iodide kit, and cell viability was measured using an MTT assay. RAGE expression levels and the activity of caspase-3 were assessed by western blot analysis. The results demonstrated that the incubation of myocytes with HG led to a time-dependent activation of RAGE, and the protein expression of RAGE was increased at 6 h and peaked at 24 h (P<0.05). Hyperglycemia was also found to significantly decrease cell viability and increase apoptosis (P<0.05). In addition, EX-4 significantly inhibited hyperglycemia-induced RAGE expression and the apoptosis of myocytes, and improved cell viability in a dose-dependent manner (P<0.05). When the concentration of EX-4 was 10 nM, the myocardial cell viability was significantly improved, and the levels of RAGE expression and apoptosis were significantly decreased compared with those in the HG group in the absence of EX-4 (P<0.05). Therefore, the results from the present study suggest that the cardioprotective effect induced by EX-4, a GLP-1 receptor agonist, against diabetic cardiomyopathy may be associated with the inhibition of RAGE expression.
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Affiliation(s)
- Bo Yi
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Xiaorong Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Zhongyuan Wen
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Ting Zhang
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Yuli Cai
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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11
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Oh CC, Nguy MQ, Schwenke DC, Migrino RQ, Thornburg K, Reaven P. p38α mitogen-activated kinase mediates cardiomyocyte apoptosis induced by palmitate. Biochem Biophys Res Commun 2014; 450:628-33. [PMID: 24931668 DOI: 10.1016/j.bbrc.2014.06.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 06/05/2014] [Indexed: 11/18/2022]
Abstract
RATIONALE The mechanisms underlying lipotoxic/diabetic cardiomyopathy remain poorly understood. Saturated fatty acid (SFA) levels, elevated in obesity and type 2 diabetes, induce apoptosis in many cell types including cardiomyocytes. Signaling pathways, including the p38α mitogen-activated kinase (MAPK)-dependent pathway, have been implicated in apoptosis due to a diverse range of insults. OBJECTIVE We tested the hypothesis that SFA-induced cardiomyocyte apoptosis is dependent on p38α activation. METHODS AND RESULTS Human adult ventricular cardiomyocytes (AC16 cells) were exposed to high physiological levels of palmitate (PA), a SFA. The apoptotic response was measured using annexin-V by flow cytometry, and the p38α-dependent pathway was evaluated using a p38 inhibitor PD169316, and by p38α small interfering RNA (siRNA) knockdown. PA exposure for 16 h dose-dependently increased apoptosis in AC16 cardiomyocytes (control: 2.6±0.6%, 150 μM PA: 3.5±0.9%, 300 μM PA: 11.5±1.6%, n=4, p<0.01). PA did not change total p38α protein levels, but increased p38α phosphorylation dose-dependently (n=5, p<0.01). PD169316 tended to reduce PA-induced apoptosis (n=4, p=0.05). Specific p38α siRNA markedly reduced the expression of p38α but not p38β (n=3, p<0.0001), and dose-dependently attenuated PA-induced apoptosis (control siRNA: 7.7±1.0%, 300 μM PA: 34.4±5.0%, 300 μM PA+30 pmol siRNA: 23.7±4.4%, 300 μM PA+60 pmol siRNA: 19.7±2.6%, 300 μM PA+120 pmol siRNA: 17.3±2.8%, n=4, p<0.0001). CONCLUSIONS These results demonstrate that PA induces p38α activation, and reducing p38α expression attenuates PA-induced cardiomyocyte apoptosis. Our results support a potential mechanism by which high plasma SFA levels through p38α activation may lead to the development of lipotoxic/diabetic cardiomyopathy.
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Affiliation(s)
- Charles C Oh
- Phoenix VA HealthCare System, Phoenix, AZ, United States.
| | - Michael Q Nguy
- Phoenix VA HealthCare System, Phoenix, AZ, United States
| | | | | | - Kent Thornburg
- Oregon Health and Science University, 3181 Sam Jackson Park Rd, Portland, OR 97239, United States
| | - Peter Reaven
- Phoenix VA HealthCare System, Phoenix, AZ, United States
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12
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Huynh K, Bernardo BC, McMullen JR, Ritchie RH. Diabetic cardiomyopathy: mechanisms and new treatment strategies targeting antioxidant signaling pathways. Pharmacol Ther 2014; 142:375-415. [PMID: 24462787 DOI: 10.1016/j.pharmthera.2014.01.003] [Citation(s) in RCA: 400] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 01/08/2014] [Indexed: 12/14/2022]
Abstract
Cardiovascular disease is the primary cause of morbidity and mortality among the diabetic population. Both experimental and clinical evidence suggest that diabetic subjects are predisposed to a distinct cardiomyopathy, independent of concomitant macro- and microvascular disorders. 'Diabetic cardiomyopathy' is characterized by early impairments in diastolic function, accompanied by the development of cardiomyocyte hypertrophy, myocardial fibrosis and cardiomyocyte apoptosis. The pathophysiology underlying diabetes-induced cardiac damage is complex and multifactorial, with elevated oxidative stress as a key contributor. We now review the current evidence of molecular disturbances present in the diabetic heart, and their role in the development of diabetes-induced impairments in myocardial function and structure. Our focus incorporates both the contribution of increased reactive oxygen species production and reduced antioxidant defenses to diabetic cardiomyopathy, together with modulation of protein signaling pathways and the emerging role of protein O-GlcNAcylation and miRNA dysregulation in the progression of diabetic heart disease. Lastly, we discuss both conventional and novel therapeutic approaches for the treatment of left ventricular dysfunction in diabetic patients, from inhibition of the renin-angiotensin-aldosterone-system, through recent evidence favoring supplementation of endogenous antioxidants for the treatment of diabetic cardiomyopathy. Novel therapeutic strategies, such as gene therapy targeting the phosphoinositide 3-kinase PI3K(p110α) signaling pathway, and miRNA dysregulation, are also reviewed. Targeting redox stress and protective protein signaling pathways may represent a future strategy for combating the ever-increasing incidence of heart failure in the diabetic population.
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Affiliation(s)
- Karina Huynh
- Baker IDI Heart & Diabetes Institute, Melbourne, Australia; Department of Medicine, Monash University, Clayton, Victoria, Australia
| | | | - Julie R McMullen
- Baker IDI Heart & Diabetes Institute, Melbourne, Australia; Department of Medicine, Monash University, Clayton, Victoria, Australia; Department of Physiology, Monash University, Clayton, Victoria, Australia.
| | - Rebecca H Ritchie
- Baker IDI Heart & Diabetes Institute, Melbourne, Australia; Department of Medicine, Monash University, Clayton, Victoria, Australia.
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13
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High Glucose Induces Reactive Oxygen Species-Dependent Matrix Metalloproteinase-9 Expression and Cell Migration in Brain Astrocytes. Mol Neurobiol 2013; 48:601-14. [DOI: 10.1007/s12035-013-8442-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 03/08/2013] [Indexed: 10/27/2022]
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14
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Park SJ, Bae D, Moon SH, Chung HM. Modification of a purification and expansion method for human embryonic stem cell-derived cardiomyocytes. Cardiology 2013; 124:139-50. [PMID: 23428747 DOI: 10.1159/000346390] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 11/30/2012] [Indexed: 11/19/2022]
Abstract
OBJECTIVE This study aimed to develop a simple and efficient purification method for human embryonic stem cell (hESC)-derived cardiomyocytes (CMs) using a low-glucose culture system. In addition, we investigated whether intercellular adhesion between single hESC-CMs plays a critical role in enhancing proliferation of purified hESC-CMs. METHOD hESCs were cultured in suspension to form human embryoid bodies (hEBs) from which ∼15% contracting clusters were derived after 15-20 days in culture. To purify CMs from contracting hEBs, we first manually isolated contracting clumps that were re-cultured on gelatin-coated plates with media containing a low concentration of glucose. The purified hESC-CMs were cultured at different densities to examine whether cell-cell contact enhances proliferation of hESC-CMs. RESULTS Purified CMs demonstrated spontaneous contraction and strongly expressed the CM-specific markers cardiac troponin T and slow myosin heavy chain. We investigated the purification efficiency by examining the expression levels of cardiac-related genes and the expression of MitoTracker Red dye. In addition, purified hESC-CMs in low-glucose culture demonstrated a 1.5-fold increase in their proliferative capacity compared to those cultured as single hESC-CMs. CONCLUSION A low level of glucose is efficient in purifying hESC-CMs and intercellular adhesion between individual hESC-CMs plays a critical role in enhancing hESC-CM proliferation.
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Affiliation(s)
- Soon-Jung Park
- Stem Cell Research Laboratory, CHA Stem Cell Institute, CHA University, Seol 135-081, Korea
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15
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Abstract
During evolution, beta cells adapted to a sole aim: the production and stimulus-dependent secretion of insulin. This acquired specificity was accompanied by a loss of protection mechanisms predisposing beta cell to a high vulnerability. Among beta cell-damaging molecules, a new one has been identified recently: macrophage migration inhibitory factor (MIF). MIF was at first designated as a T-cell product that inhibits random movement of macrophages. Over the years, the number of functions attributed to this protein increased significantly, positioning MIF at the top of inflammatory cascade in the combat against infection and in immunoinflammatory and autoimmune diseases. This exceptionally versatile molecule regulates insulin secretion in physiological conditions, while in pathological states it alters beta cell function and induces their apoptosis or necrosis and affects beta cell neoplasia.
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16
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Sanchez-Niño MD, Sanz AB, Ruiz-Andres O, Poveda J, Izquierdo MC, Selgas R, Egido J, Ortiz A. MIF, CD74 and other partners in kidney disease: tales of a promiscuous couple. Cytokine Growth Factor Rev 2012; 24:23-40. [PMID: 22959722 DOI: 10.1016/j.cytogfr.2012.08.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 08/20/2012] [Indexed: 12/27/2022]
Abstract
Macrophage migration inhibitory factor (MIF) is increased in kidney and urine during kidney disease. MIF binds to and activates CD74 and chemokine receptors CXCR2 and CXCR4. CD74 is a protein trafficking regulator and a cell membrane receptor for MIF, D-dopachrome tautomerase (D-DT/MIF-2) and bacterial proteins. MIF signaling through CD74 requires CD44. CD74, CD44 and CXCR4 are upregulated in renal cells in diseased kidneys and MIF activation of CD74 in kidney cells promotes an inflammatory response. MIF or CXCR2 targeting protects from experimental kidney injury, CD44 deficiency modulates kidney injury and CXCR4 activation promotes glomerular injury. However, the contribution of MIF or MIF-2 to these actions of MIF receptors has not been explored. The safety and efficacy of strategies targeting MIF, CD74, CD44 and CXCR4 are under study in humans.
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Singh AB, Guleria RS, Nizamutdinova IT, Baker KM, Pan J. High glucose-induced repression of RAR/RXR in cardiomyocytes is mediated through oxidative stress/JNK signaling. J Cell Physiol 2012; 227:2632-44. [PMID: 21882190 DOI: 10.1002/jcp.23005] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The biological actions of retinoids are mediated by nuclear retinoic acid receptors (RARs) and retinoid X receptors (RXRs). We have recently reported that decreased expression of RARα and RXRα has an important role in high glucose (HG)-induced cardiomyocyte apoptosis. However, the regulatory mechanisms of HG effects on RARα and RXRα remain unclear. Using neonatal cardiomyocytes, we found that ligand-induced promoter activity of RAR and RXR was significantly suppressed by HG. HG promoted protein destabilization and serine-phosphorylation of RARα and RXRα. Proteasome inhibitor MG132 blocked the inhibitory effect of HG on RARα and RXRα. Inhibition of intracellular reactive oxidative species (ROS) abolished the HG effect. In contrast, H(2)O(2) stimulation suppressed the expression and ligand-induced promoter activity of RARα and RXRα. HG promoted phosphorylation of ERK1/2, JNK and p38 MAP kinases, which was abrogated by an ROS inhibitor. Inhibition of JNK, but not ERK and p38 activity, reversed HG effects on RARα and RXRα. Activation of JNK by over expressing MKK7 and MEKK1, resulted in significant downregulation of RARα and RXRα. Ligand-induced promoter activity of RARα and RXRα was also suppressed by overexpression of MEKK1. HG-induced cardiomyocyte apoptosis was potentiated by activation of JNK, and prevented by all-trans retinoic acid and inhibition of JNK. Silencing the expression of RARα and RXRα activated the JNK pathway. In conclusion, HG-induced oxidative stress and activation of the JNK pathway negatively regulated expression/activation of RAR and RXR. The impaired RAR/RXR signaling and oxidative stress/JNK pathway forms a vicious circle, which significantly contributes to hyperglycemia induced cardiomyocyte apoptosis.
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Affiliation(s)
- Amar B Singh
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center, Central Texas Veterans Health Care System, Temple, Texas 76504, USA
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18
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Sun D, Huang J, Zhang Z, Gao H, Li J, Shen M, Cao F, Wang H. Luteolin limits infarct size and improves cardiac function after myocardium ischemia/reperfusion injury in diabetic rats. PLoS One 2012; 7:e33491. [PMID: 22432030 PMCID: PMC3303839 DOI: 10.1371/journal.pone.0033491] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Accepted: 02/15/2012] [Indexed: 01/06/2023] Open
Abstract
Background The present study was to investigate the effects and mechanism of Luteolin on myocardial infarct size, cardiac function and cardiomyocyte apoptosis in diabetic rats with myocardial ischemia/reperfusion (I/R) injury. Methodology/Principal Findings Diabetic rats underwent 30 minutes of ischemia followed by 3 h of reperfusion. Animals were pretreated with or without Luteolin before coronary artery ligation. The severity of myocardial I/R induced LDH release, arrhythmia, infarct size, cardiac function impairment, cardiomyocyte apoptosis were compared. Western blot analysis was performed to elucidate the target proteins of Luteolin. The inflammatory cytokine production were also examined in ischemic myocardium underwent I/R injury. Our results revealed that Luteolin administration significantly reduced LDH release, decreased the incidence of arrhythmia, attenuated myocardial infarct size, enhanced left ventricular ejection fraction and decreased myocardial apoptotic death compared with I/R group. Western blot analysis showed that Luteolin treatment up-regulated anti-apoptotic proteins FGFR2 and LIF expression, increased BAD phosphorylation while decreased the ratio of Bax to Bcl-2. Luteolin treatment also inhibited MPO expression and inflammatory cytokine production including IL-6, IL-1a and TNF-a. Moreover, co-administration of wortmannin and Luteolin abolished the beneficial effects of Luteolin. Conclusions/Significance This study indicates that Luteolin preserves cardiac function, reduces infarct size and cardiomyocyte apoptotic rate after I/R injury in diabetic rats. Luteolin exerts its action by up-regulating of anti-apoptotic proteins FGFR2 and LIF expression, activating PI3K/Akt pathway while increasing BAD phosphorylation and decreasing ratio of Bax to Bcl-2.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Arrhythmias, Cardiac/complications
- Arrhythmias, Cardiac/pathology
- Arrhythmias, Cardiac/physiopathology
- Arrhythmias, Cardiac/prevention & control
- Cell Movement/drug effects
- Cytokines/metabolism
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/diagnostic imaging
- Diabetes Mellitus, Experimental/physiopathology
- Heart Function Tests/drug effects
- L-Lactate Dehydrogenase/metabolism
- Leukocytes/drug effects
- Leukocytes/pathology
- Luteolin/pharmacology
- Luteolin/therapeutic use
- Male
- Myocardial Infarction/diagnostic imaging
- Myocardial Infarction/drug therapy
- Myocardial Infarction/pathology
- Myocardial Infarction/physiopathology
- Myocardial Reperfusion Injury/complications
- Myocardial Reperfusion Injury/diagnostic imaging
- Myocardial Reperfusion Injury/drug therapy
- Myocardial Reperfusion Injury/physiopathology
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/pathology
- Rats
- Rats, Sprague-Dawley
- Ultrasonography
- Ventricular Function, Left/drug effects
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Affiliation(s)
- Dongdong Sun
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- * E-mail: (DS); (HW)
| | | | | | | | | | | | | | - Haichang Wang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- * E-mail: (DS); (HW)
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19
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SHANG YUANYUAN, FANG NINGNING, WANG FENG, WANG HUI, WANG ZHIHAO, TANG MENGXIONG, PENG JIE, ZHANG YUN, ZHANG WEI, ZHONG MING. MicroRNA-21, induced by high glucose, modulates macrophage apoptosis via programmed cell death 4. Mol Med Rep 2012; 12:463-9. [DOI: 10.3892/mmr.2015.3398] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 01/27/2015] [Indexed: 11/06/2022] Open
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20
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Affiliation(s)
- Keng Wooi Ng
- From the Department of Cardiovascular Pharmacology, National Heart and Lung Institute, Imperial College London (K.W.N., N.P.) and Paediatric Intensive Care Unit, Royal Brompton Hospital, London, United Kingdom (M.L.A., A.D., D.M., N.P.)
| | - Meredith L. Allen
- From the Department of Cardiovascular Pharmacology, National Heart and Lung Institute, Imperial College London (K.W.N., N.P.) and Paediatric Intensive Care Unit, Royal Brompton Hospital, London, United Kingdom (M.L.A., A.D., D.M., N.P.)
| | - Ajay Desai
- From the Department of Cardiovascular Pharmacology, National Heart and Lung Institute, Imperial College London (K.W.N., N.P.) and Paediatric Intensive Care Unit, Royal Brompton Hospital, London, United Kingdom (M.L.A., A.D., D.M., N.P.)
| | - Duncan Macrae
- From the Department of Cardiovascular Pharmacology, National Heart and Lung Institute, Imperial College London (K.W.N., N.P.) and Paediatric Intensive Care Unit, Royal Brompton Hospital, London, United Kingdom (M.L.A., A.D., D.M., N.P.)
| | - Nazima Pathan
- From the Department of Cardiovascular Pharmacology, National Heart and Lung Institute, Imperial College London (K.W.N., N.P.) and Paediatric Intensive Care Unit, Royal Brompton Hospital, London, United Kingdom (M.L.A., A.D., D.M., N.P.)
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Xiao DZ, Dai B, Chen J, Luo Q, Liu XY, Lin QX, Li XH, Huang W, Yu XY. Loss of macrophage migration inhibitory factor impairs the growth properties of human HeLa cervical cancer cells. Cell Prolif 2011; 44:582-90. [PMID: 21991924 DOI: 10.1111/j.1365-2184.2011.00787.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES This study aims to determine the role of macrophage migration inhibitory factor (MIF), a proinflammatory cytokine associated with cell proliferation and tumour growth in vivo. MATERIALS AND METHODS Our team used RNA interference technology to knock down MIF expression in human HeLa cervical cancer cells and to establish a stable cell line lacking MIF function. RESULTS Our results showed that long-term loss of MIF had little effect on cell morphology, but significantly inhibited their population growth and proliferation. The HeLa MIF-knockdown cells retained normal apoptotic signalling pathways in response to TNF-alpha treatment; however, they exhibited unique DNA profiles following doxorubicin treatment, suggesting that MIF may regulate a cell cycle checkpoint upon DNA damage. Our data also showed that knockdown of MIF expression in HeLa cells led to increased cell adhesion and therefore impaired their migratory capacity. More importantly, cells lacking MIF failed to either proliferate in soft agar or form tumours in vivo, when administered to nude mice. CONCLUSION MIF plays a pivotal role in proliferation and tumourigenesis of human HeLa cervical carcinoma cells, and may represent a promising therapeutic target for cancer intervention.
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Affiliation(s)
- D Z Xiao
- Medical Research Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
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Abstract
Macrophage migration inhibitory factor (MIF) is a pleiotropic proinflammatory cytokine that has been implicated as playing a causative role in many disease states, including sepsis, pneumonia, diabetes, rheumatoid arthritis, inflammatory bowel disease, psoriasis and cancer. To inhibit the enzymatic and biologic activities of MIF, we and others have developed small-molecule MIF inhibitors. Most MIF inhibitors bind within the hydrophobic pocket that contains highly conserved amino acids known to be essential for MIF's proinflammatory activity. The best characterized of these small-molecule MIF inhibitors, (S,R)-3-(4-hydroxyphenyl)-4,5-dihydro-5-isoxazole acetic acid methyl ester (ISO-1) has been validated in scores of laboratories worldwide. Like neutralizing anti-MIF antibodies, ISO-1 significantly improves survival and reduces disease progression and/or severity in multiple murine models where MIF is implicated. This MIF inhibitor, its derivatives and other MIF-targeted compounds show great promise for future testing in disease states where increased MIF activity has been discovered.
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Yu XY, Chen HM, Liang JL, Lin QX, Tan HH, Fu YH, Liu XY, Shan ZX, Li XH, Yang HZ, Yang M, Li Y, Lin SG. Hyperglycemic myocardial damage is mediated by proinflammatory cytokine: macrophage migration inhibitory factor. PLoS One 2011; 6:e16239. [PMID: 21283592 PMCID: PMC3026813 DOI: 10.1371/journal.pone.0016239] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Accepted: 12/13/2010] [Indexed: 01/07/2023] Open
Abstract
Background Diabetes has been regarded as an inflammatory condition which is associated with left ventricular diastolic dysfunction (LVDD). The purpose of this study was to examine the expression levels of macrophage migration inhibitory factor (MIF) and G protein-coupled receptor kinase 2 (GRK2) in patients with early diabetic cardiomyopathy, and to investigate the mechanisms involved in MIF expression and GRK2 activation. Methods 83 patients in the age range of 30-64 years with type 2 diabetes and 30 matched healthy men were recruited. Left ventricular diastolic function was evaluated by cardiac Doppler echocardiography. Plasma MIF levels were determined by ELISA. To confirm the clinical observation, we also studied MIF expression in prediabetic rats with impaired glucose tolerance (IGT) and relationship between MIF and GRK2 expression in H9C2 cardiomyoblasts exposed to high glucose. Results Compared with healthy subjects, patients with diabetes have significantly increased levels of plasma MIF which was further increased in diabetic patients with Left ventricular diastolic dysfunction (LVDD). The increased plasma MIF levels in diabetic patients correlated with plasma glucose, glycosylated hemoglobin and urine albumin levels. We observed a significant number of TUNEL-positive cells in the myocardium of IGT-rats but not in the control rats. Moreover, we found higher MIF expression in the heart of IGT with cardiac dysfunction compared to that of the controls. In H9C2 cardiomyoblast cells, MIF and GRK2 expression was significantly increased in a glucose concentration-dependant manner. Furthermore, GRK2 expression was abolished by siRNA knockdown of MIF and by the inhibition of CXCR4 in H9C2 cells. Conclusions Our findings indicate that hyperglycemia is a causal factor for increased levels of pro-inflammatory cytokine MIF which plays a role in the development of cardiomyopathy occurring in patients with type 2 diabetes. The elevated levels of MIF are associated with cardiac dysfunction in diabetic patients, and the MIF effects are mediated by GRK2.
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Affiliation(s)
- Xi-Yong Yu
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
- * E-mail: (X-YY); (YL); (S-GL)
| | - Hong-Mei Chen
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
- Division of Endocrinology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Jia-Liang Liang
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Qiu-Xiong Lin
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Hong-Hong Tan
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Yong-Heng Fu
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Xiao-Ying Liu
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Zhi-Xin Shan
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Xiao-Hong Li
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Hua-Zhang Yang
- Division of Endocrinology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Min Yang
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Yangxin Li
- Texas Heart Institute and University of Texas Health Science Center, Houston, Texas, United States of America
- * E-mail: (X-YY); (YL); (S-GL)
| | - Shu-Guang Lin
- Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
- * E-mail: (X-YY); (YL); (S-GL)
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