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Anatskaya OV, Runov AL, Ponomartsev SV, Vonsky MS, Elmuratov AU, Vinogradov AE. Long-Term Transcriptomic Changes and Cardiomyocyte Hyperpolyploidy after Lactose Intolerance in Neonatal Rats. Int J Mol Sci 2023; 24:ijms24087063. [PMID: 37108224 PMCID: PMC10138443 DOI: 10.3390/ijms24087063] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/02/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Many cardiovascular diseases originate from growth retardation, inflammation, and malnutrition during early postnatal development. The nature of this phenomenon is not completely understood. Here we aimed to verify the hypothesis that systemic inflammation triggered by neonatal lactose intolerance (NLI) may exert long-term pathologic effects on cardiac developmental programs and cardiomyocyte transcriptome regulation. Using the rat model of NLI triggered by lactase overloading with lactose and the methods of cytophotometry, image analysis, and mRNA-seq, we evaluated cardiomyocyte ploidy, signs of DNA damage, and NLI-associated long-term transcriptomic changes of genes and gene modules that differed qualitatively (i.e., were switched on or switched off) in the experiment vs. the control. Our data indicated that NLI triggers the long-term animal growth retardation, cardiomyocyte hyperpolyploidy, and extensive transcriptomic rearrangements. Many of these rearrangements are known as manifestations of heart pathologies, including DNA and telomere instability, inflammation, fibrosis, and reactivation of fetal gene program. Moreover, bioinformatic analysis identified possible causes of these pathologic traits, including the impaired signaling via thyroid hormone, calcium, and glutathione. We also found transcriptomic manifestations of increased cardiomyocyte polyploidy, such as the induction of gene modules related to open chromatin, e.g., "negative regulation of chromosome organization", "transcription" and "ribosome biogenesis". These findings suggest that ploidy-related epigenetic alterations acquired in the neonatal period permanently rewire gene regulatory networks and alter cardiomyocyte transcriptome. Here we provided first evidence indicating that NLI can be an important trigger of developmental programming of adult cardiovascular disease. The obtained results can help to develop preventive strategies for reducing the NLI-associated adverse effects of inflammation on the developing cardiovascular system.
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Affiliation(s)
| | - Andrey L Runov
- The D.I. Mendeleev All-Russian Institute for Metrology (VNIIM), Moskovsky ave 19, Saint Petersburg 190005, Russia
- Almazov Medical Research Centre, Akkuratova Street 2, Saint Petersburg 197341, Russia
| | | | - Maxim S Vonsky
- The D.I. Mendeleev All-Russian Institute for Metrology (VNIIM), Moskovsky ave 19, Saint Petersburg 190005, Russia
- Almazov Medical Research Centre, Akkuratova Street 2, Saint Petersburg 197341, Russia
| | - Artem U Elmuratov
- Medical Genetics Centre Genotek, Nastavnichesky Alley 17-1-15, Moscow 105120, Russia
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2
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Aimo A, Iborra-Egea O, Martini N, Galvez-Monton C, Burchielli S, Panichella G, Passino C, Emdin M, Bayes-Genis A. Cardiac protection by pirfenidone after myocardial infarction: a bioinformatic analysis. Sci Rep 2022; 12:4691. [PMID: 35304529 PMCID: PMC8933518 DOI: 10.1038/s41598-022-08523-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 02/28/2022] [Indexed: 11/16/2022] Open
Abstract
Left ventricular (LV) remodeling after myocardial infarction (MI) is promoted by an intense fibrotic response, which could be targeted by the anti-fibrotic drug pirfenidone. We explored the relationship between protein modulation by pirfenidone and post-MI remodeling, based on molecular information and transcriptomic data from a swine model of MI. We identified 6 causative motives of post-MI remodeling (cardiomyocyte cell death, impaired myocyte contractility, extracellular matrix remodeling and fibrosis, hypertrophy, renin–angiotensin–aldosterone system activation, and inflammation), 4 pirfenidone targets and 21 bioflags (indirect effectors). Pirfenidone had a more widespread action than gold-standard drugs, encompassing all 6 motives, with prominent effects on p38γ-MAPK12, the TGFβ1-SMAD2/3 pathway and other effector proteins such as matrix metalloproteases 2 and 14, PDGFA/B, and IGF1. A bioinformatic approach allowed to identify several possible mechanisms of action of pirfenidone with beneficial effects in the post-MI LV remodeling, and suggests additional effects over guideline-recommended therapies.
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Affiliation(s)
- Alberto Aimo
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56124, Pisa, Italy. .,Cardiology Division, Fondazione Toscana Gabriele Monasterio, Pisa, Italy.
| | - Oriol Iborra-Egea
- ICREC (Heart Failure and Cardiac Regeneration) Research Programme, Health Sciences Research Institute Germans Trias I Pujol (IGTP), Barcelona, Spain.,CIBER Cardiovascular, Instituto de Salud Carlos III, Madrid, Spain
| | - Nicola Martini
- Cardiology Division, Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Carolina Galvez-Monton
- ICREC (Heart Failure and Cardiac Regeneration) Research Programme, Health Sciences Research Institute Germans Trias I Pujol (IGTP), Barcelona, Spain
| | - Silvia Burchielli
- Cardiology Division, Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Giorgia Panichella
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56124, Pisa, Italy
| | - Claudio Passino
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56124, Pisa, Italy.,Cardiology Division, Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Michele Emdin
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56124, Pisa, Italy.,Cardiology Division, Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Antoni Bayes-Genis
- ICREC (Heart Failure and Cardiac Regeneration) Research Programme, Health Sciences Research Institute Germans Trias I Pujol (IGTP), Barcelona, Spain.,CIBER Cardiovascular, Instituto de Salud Carlos III, Madrid, Spain
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3
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Fernandez GJ, Ferreira JH, Vechetti IJ, de Moraes LN, Cury SS, Freire PP, Gutiérrez J, Ferretti R, Dal-Pai-Silva M, Rogatto SR, Carvalho RF. MicroRNA-mRNA Co-sequencing Identifies Transcriptional and Post-transcriptional Regulatory Networks Underlying Muscle Wasting in Cancer Cachexia. Front Genet 2020; 11:541. [PMID: 32547603 PMCID: PMC7272700 DOI: 10.3389/fgene.2020.00541] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/05/2020] [Indexed: 12/23/2022] Open
Abstract
Cancer cachexia is a metabolic syndrome with alterations in gene regulatory networks that consequently lead to skeletal muscle wasting. Integrating microRNAs-mRNAs omics profiles offers an opportunity to understand transcriptional and post-transcriptional regulatory networks underlying muscle wasting. Here, we used RNA sequencing to simultaneously integrate and explore microRNAs and mRNAs expression profiles in the tibialis anterior (TA) muscles of the Lewis Lung Carcinoma (LLC) model of cancer cachexia. We found 1,008 mRNAs and 18 microRNAs differentially expressed in cachectic mice compared with controls. Although our transcriptomic analysis demonstrated a high heterogeneity in mRNA profiles of cachectic mice, we identified a reduced number of differentially expressed genes that were uniformly regulated within cachectic muscles. This set of uniformly regulated genes is associated with the extracellular matrix (ECM), proteolysis, and inflammatory response. We also used transcriptomic data to perform enrichment analysis of transcriptional factor binding sites in promoter sequences, which revealed activation of the atrophy-related transcription factors NF-κB, Stat3, AP-1, and FoxO. Furthermore, the integration of mRNA and microRNA expression profiles identified post-transcriptional regulation by microRNAs of genes involved in ECM organization, cell migration, transcription factors binding, ion transport, and the FoxO signaling pathway. Our integrative analysis of microRNA-mRNA co-profiles comprehensively characterized regulatory relationships of molecular pathways and revealed microRNAs targeting ECM-associated genes in cancer cachexia.
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Affiliation(s)
- Geysson Javier Fernandez
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil.,Faculty of Medicine, University of Antioquia, Medellín, Colombia
| | - Juarez Henrique Ferreira
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Ivan José Vechetti
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Leonardo Nazario de Moraes
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Sarah Santiloni Cury
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Paula Paccielli Freire
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Jayson Gutiérrez
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Renato Ferretti
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Maeli Dal-Pai-Silva
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Silvia Regina Rogatto
- Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Robson Francisco Carvalho
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
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4
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O'Shea KM, Ananthakrishnan R, Li Q, Quadri N, Thiagarajan D, Sreejit G, Wang L, Zirpoli H, Aranda JF, Alberts AS, Schmidt AM, Ramasamy R. The Formin, DIAPH1, is a Key Modulator of Myocardial Ischemia/Reperfusion Injury. EBioMedicine 2017; 26:165-174. [PMID: 29239839 PMCID: PMC5832565 DOI: 10.1016/j.ebiom.2017.11.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 11/16/2017] [Accepted: 11/16/2017] [Indexed: 01/13/2023] Open
Abstract
The biochemical, ionic, and signaling changes that occur within cardiomyocytes subjected to ischemia are exacerbated by reperfusion; however, the precise mechanisms mediating myocardial ischemia/reperfusion (I/R) injury have not been fully elucidated. The receptor for advanced glycation end-products (RAGE) regulates the cellular response to cardiac tissue damage in I/R, an effect potentially mediated by the binding of the RAGE cytoplasmic domain to the diaphanous-related formin, DIAPH1. The aim of this study was to investigate the role of DIAPH1 in the physiological response to experimental myocardial I/R in mice. After subjecting wild-type mice to experimental I/R, myocardial DIAPH1 expression was increased, an effect that was echoed following hypoxia/reoxygenation (H/R) in H9C2 and AC16 cells. Further, compared to wild-type mice, genetic deletion of Diaph1 reduced infarct size and improved contractile function after I/R. Silencing Diaph1 in H9C2 cells subjected to H/R downregulated actin polymerization and serum response factor-regulated gene expression. Importantly, these changes led to increased expression of sarcoplasmic reticulum Ca2+ ATPase and reduced expression of the sodium calcium exchanger. This work demonstrates that DIAPH1 is required for the myocardial response to I/R, and that targeting DIAPH1 may represent an adjunctive approach for myocardial salvage after acute infarction.
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Affiliation(s)
- Karen M O'Shea
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Radha Ananthakrishnan
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Qing Li
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Nosirudeen Quadri
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Devi Thiagarajan
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Gopalkrishna Sreejit
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Lingjie Wang
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Hylde Zirpoli
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Juan Francisco Aranda
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Arthur S Alberts
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, MI 49503, USA
| | - Ann Marie Schmidt
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA
| | - Ravichandran Ramasamy
- Diabetes Research Program, Department of Medicine, New York University Langone Medical Center, New York, NY 10016, USA.
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5
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Baskin KK, Makarewich CA, DeLeon SM, Ye W, Chen B, Beetz N, Schrewe H, Bassel-Duby R, Olson EN. MED12 regulates a transcriptional network of calcium-handling genes in the heart. JCI Insight 2017; 2:91920. [PMID: 28724790 DOI: 10.1172/jci.insight.91920] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 06/13/2017] [Indexed: 02/06/2023] Open
Abstract
The Mediator complex regulates gene transcription by linking basal transcriptional machinery with DNA-bound transcription factors. The activity of the Mediator complex is mainly controlled by a kinase submodule that is composed of 4 proteins, including MED12. Although ubiquitously expressed, Mediator subunits can differentially regulate gene expression in a tissue-specific manner. Here, we report that MED12 is required for normal cardiac function, such that mice with conditional cardiac-specific deletion of MED12 display progressive dilated cardiomyopathy. Loss of MED12 perturbs expression of calcium-handling genes in the heart, consequently altering calcium cycling in cardiomyocytes and disrupting cardiac electrical activity. We identified transcription factors that regulate expression of calcium-handling genes that are downregulated in the heart in the absence of MED12, and we found that MED12 localizes to transcription factor consensus sequences within calcium-handling genes. We showed that MED12 interacts with one such transcription factor, MEF2, in cardiomyocytes and that MED12 and MEF2 co-occupy promoters of calcium-handling genes. Furthermore, we demonstrated that MED12 enhances MEF2 transcriptional activity and that overexpression of both increases expression of calcium-handling genes in cardiomyocytes. Our data support a role for MED12 as a coordinator of transcription through MEF2 and other transcription factors. We conclude that MED12 is a regulator of a network of calcium-handling genes, consequently mediating contractility in the mammalian heart.
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Affiliation(s)
| | | | | | | | - Beibei Chen
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | | | - Heinrich Schrewe
- Department of Developmental Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Rhonda Bassel-Duby
- Department of Molecular Biology and.,Hamon Center for Regenerative Science and Medicine and.,Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Eric N Olson
- Department of Molecular Biology and.,Hamon Center for Regenerative Science and Medicine and.,Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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6
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A Review of the Molecular Mechanisms Underlying the Development and Progression of Cardiac Remodeling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3920195. [PMID: 28751931 PMCID: PMC5511646 DOI: 10.1155/2017/3920195] [Citation(s) in RCA: 256] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 05/30/2017] [Indexed: 02/07/2023]
Abstract
Pathological molecular mechanisms involved in myocardial remodeling contribute to alter the existing structure of the heart, leading to cardiac dysfunction. Among the complex signaling network that characterizes myocardial remodeling, the distinct processes are myocyte loss, cardiac hypertrophy, alteration of extracellular matrix homeostasis, fibrosis, defective autophagy, metabolic abnormalities, and mitochondrial dysfunction. Several pathophysiological stimuli, such as pressure and volume overload, trigger the remodeling cascade, a process that initially confers protection to the heart as a compensatory mechanism. Yet chronic inflammation after myocardial infarction also leads to cardiac remodeling that, when prolonged, leads to heart failure progression. Here, we review the molecular pathways involved in cardiac remodeling, with particular emphasis on those associated with myocardial infarction. A better understanding of cell signaling involved in cardiac remodeling may support the development of new therapeutic strategies towards the treatment of heart failure and reduction of cardiac complications. We will also discuss data derived from gene therapy approaches for modulating key mediators of cardiac remodeling.
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7
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Balasubramaniam SL, Gopalakrishnapillai A, Petrelli NJ, Barwe SP. Knockdown of sodium-calcium exchanger 1 induces epithelial-to-mesenchymal transition in kidney epithelial cells. J Biol Chem 2017; 292:11388-11399. [PMID: 28550085 DOI: 10.1074/jbc.m116.752352] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 05/17/2017] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal-to-epithelial transition (MET) and epithelial-to-mesenchymal transition (EMT) are important processes in kidney development. Failure to undergo MET during development leads to the initiation of Wilms tumor, whereas EMT contributes to the development of renal cell carcinomas (RCC). The role of calcium regulators in governing these processes is becoming evident. We demonstrated earlier that Na+/Ca2+ exchanger 1 (NCX1), a major calcium exporter in renal epithelial cells, regulates epithelial cell motility. Here, we show for the first time that NCX1 mRNA and protein expression was down-regulated in Wilms tumor and RCC. Knockdown of NCX1 in Madin-Darby canine kidney cells induced fibroblastic morphology, increased intercellular junctional distance, and induced paracellular permeability, loss of apico-basal polarity in 3D cultures, and anchorage-independent growth, accompanied by expression of mesenchymal markers. We also provide evidence that NCX1 interacts with and anchors E-cadherin to the cell surface independent of NCX1 ion transport activity. Consistent with destabilization of E-cadherin, NCX1 knockdown cells showed an increase in β-catenin nuclear localization, enhanced transcriptional activity, and up-regulation of downstream targets of the β-catenin signaling pathway. Taken together, knockdown of NCX1 in Madin-Darby canine kidney cells alters epithelial morphology and characteristics by destabilization of E-cadherin and induction of β-catenin signaling.
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Affiliation(s)
- Sona Lakshme Balasubramaniam
- From the Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19803.,the Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, and
| | - Anilkumar Gopalakrishnapillai
- From the Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19803
| | - Nicholas J Petrelli
- the Helen F. Graham Cancer Center, Christiana Care Health System, Newark, Delaware 19718
| | - Sonali P Barwe
- From the Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19803, .,the Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, and
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8
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Cappetta D, Esposito G, Coppini R, Piegari E, Russo R, Ciuffreda LP, Rivellino A, Santini L, Rafaniello C, Scavone C, Rossi F, Berrino L, Urbanek K, De Angelis A. Effects of ranolazine in a model of doxorubicin-induced left ventricle diastolic dysfunction. Br J Pharmacol 2017; 174:3696-3712. [PMID: 28320043 DOI: 10.1111/bph.13791] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 03/07/2017] [Accepted: 03/09/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE Doxorubicin is a highly effective anticancer drug, but its clinical application is hampered by cardiotoxicity. Asymptomatic diastolic dysfunction can be the earliest manifestation of doxorubicin cardiotoxicity. Therefore, a search for therapeutic intervention that can interfere with early manifestations and possibly prevent later development of cardiotoxicity is warranted. Increased doxorubicin-dependent ROS may explain, in part, Ca2+ and Na+ overload that contributes to diastolic dysfunction and development of heart failure. Therefore, we tested whether the administration of ranolazine, a selective blocker of late Na+ current, immediately after completing doxorubicin therapy, could affect diastolic dysfunction and interfere with the progression of functional decline. EXPERIMENTAL APPROACH Fischer 344 rats received a cumulative dose of doxorubicin of 15 mg·kg-1 over a period of 2 weeks. After the assessment of diastolic dysfunction, the animals were treated with ranolazine (80 mg·kg-1 , daily) for the following 4 weeks. KEY RESULTS While diastolic and systolic function progressively deteriorated in doxorubicin-treated animals, treatment with ranolazine relieved diastolic dysfunction and prevented worsening of systolic function, decreasing mortality. Ranolazine lowered myocardial NADPH oxidase 2 expression and oxidative/nitrative stress. Expression of the Na+ /Ca2+ exchanger 1 and Nav 1.5 channels was reduced and of the sarcoplasmic/endoplasmic reticulum Ca2+ -ATPase 2 protein was increased. In addition, ranolazine lowered doxorubicin-induced hyper-phosphorylation and oxidation of Ca2+ /calmodulin-dependent protein kinase II, and decreased myocardial fibrosis. CONCLUSIONS AND IMPLICATIONS Ranolazine, by the increased Na+ influx, induced by doxorubicin, altered cardiac Ca2+ and Na+ handling and attenuated diastolic dysfunction induced by doxorubicin, thus preventing the progression of cardiomyopathy. LINKED ARTICLES This article is part of a themed section on New Insights into Cardiotoxicity Caused by Chemotherapeutic Agents. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.21/issuetoc.
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Affiliation(s)
- Donato Cappetta
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Grazia Esposito
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Raffaele Coppini
- Department of Neuroscience, Drug Research and Child's Health (NeuroFarBa), Division of Pharmacology, University of Florence, Florence, Italy
| | - Elena Piegari
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Rosa Russo
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Loreta Pia Ciuffreda
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Alessia Rivellino
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Lorenzo Santini
- Department of Neuroscience, Drug Research and Child's Health (NeuroFarBa), Division of Pharmacology, University of Florence, Florence, Italy
| | - Concetta Rafaniello
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Cristina Scavone
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Francesco Rossi
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Liberato Berrino
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Konrad Urbanek
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Antonella De Angelis
- Department of Experimental Medicine, Division of Pharmacology, University of Campania "Luigi Vanvitelli", Naples, Italy
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9
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Ponti D, Bastianelli D, Rosa P, Pacini L, Ibrahim M, Rendina EA, Ragona G, Calogero A. The expression of B23 and EGR1 proteins is functionally linked in tumor cells under stress conditions. BMC Cell Biol 2015; 16:27. [PMID: 26577150 PMCID: PMC4650859 DOI: 10.1186/s12860-015-0073-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 11/12/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The nucleolus is a multi-domain enriched with proteins involved in ribosome biogenesis, cell cycle and apoptosis control, viral replication and differentiation of stem cells. Several authors have suggested a role for the nucleolus also in malignant transformation. We have recently demonstrated that under specific circumstances the transcriptional factor EGR1 is shuttled to the nucleolus where it functions as a negative regulator of RNA polymerase I. Since this activity is hampered in ARF -/- cells, and ARF transcription is regulated by EGR1 while the turnover of ARF protein is under the control of B23, we speculated that some sort of cooperation between EGR1 and B23 might also exist. RESULTS In this work we identified a canonical EGR1 binding site on the B23 promoter through experiments of transactivation and in vitro DNA binding assay. We then found that the levels of B23 expression are directly correlated with those of EGR1, and that this correlation applies to several cellular types and to different stress conditions. Furthermore, we showed that EGR1 stability and accumulation within the nucleolus is in turn regulated by B23 through proteasome involvement, similarly to ARF turnover. CONCLUSION Our results highlight EGR1 as a regulator of B23 expression actively playing within the newly discovered nucleolar B23-ARF-EGR1 network.
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Affiliation(s)
- Donatella Ponti
- Department of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Corso della Repubblica 79, 04100, Latina, Italy.
| | - Daniela Bastianelli
- Division of Thoracic Surgery, Department of Medical-Surgical Science and Translational Medicine, University Sapienza, S. Andrea Hospital, via di Grottarossa 1035, 00189, Rome, Italy.
| | - Paolo Rosa
- Department of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Corso della Repubblica 79, 04100, Latina, Italy.
| | - Luca Pacini
- Department of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Corso della Repubblica 79, 04100, Latina, Italy.
| | - Mohsen Ibrahim
- Division of Thoracic Surgery, Department of Medical-Surgical Science and Translational Medicine, University Sapienza, S. Andrea Hospital, via di Grottarossa 1035, 00189, Rome, Italy.
| | - Erino Angelo Rendina
- Division of Thoracic Surgery, Department of Medical-Surgical Science and Translational Medicine, University Sapienza, S. Andrea Hospital, via di Grottarossa 1035, 00189, Rome, Italy.
| | - Giuseppe Ragona
- Department of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Corso della Repubblica 79, 04100, Latina, Italy.
| | - Antonella Calogero
- Department of Medico-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Corso della Repubblica 79, 04100, Latina, Italy.
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10
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Richards EM, Rabaglino MB, Antolic A, Wood CE, Keller-Wood M. Patterns of gene expression in the sheep heart during the perinatal period revealed by transcriptomic modeling. Physiol Genomics 2015; 47:407-19. [PMID: 26126790 DOI: 10.1152/physiolgenomics.00027.2015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 06/26/2015] [Indexed: 01/12/2023] Open
Abstract
Septa from sheep hearts at 130 days gestation, term, and 14-day-old lambs were used to model the changes in gene expression patterns during the perinatal period using Agilent 15k ovine microarrays. We used Bioconductor for R to model five major patterns of coexpressed genes. Gene ontology and transcription factor analyses using Webgestalt modeled the biological significances and transcription factors of the gene expression patterns. Modeling indicated a decreased expression of genes associated with anatomical development and differentiation during this period, whereas those associated with increased protein synthesis and growth associated with maturation of the endoplasmic reticulum rose to term but did not further increase from the near term expression. Expression of genes associated with cell responsiveness, for example, immune responses, decreased at term but expression returned by postnatal day 14. Changes in genes related to metabolism showed differential substrate-associated patterns: those related to carbohydrate metabolism rose to term and remained stable thereafter, whereas those associated with fatty acid oxidation facility rose throughout the period. The timing of many of these maturational processes was earlier in relation to birth than in the rodent. The importance of the transcription factors, estrogen-related receptors, and v-myc avian myelocytomatosis viral oncogene homolog was also highlighted in the pattern of gene expression during development of the perinatal sheep heart.
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Affiliation(s)
- Elaine M Richards
- Department of Pharmacodynamics, University of Florida, Gainesville, Florida;
| | - M Belen Rabaglino
- Departamento de Reproducción Animal, Facultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - Andrew Antolic
- Department of Pharmacodynamics, University of Florida, Gainesville, Florida
| | - Charles E Wood
- Department of Physiology and Functional Genomics, University of Florida, Gainesville, Florida; and
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EGR1 Functions as a Potent Repressor of MEF2 Transcriptional Activity. PLoS One 2015; 10:e0127641. [PMID: 26011708 PMCID: PMC4444265 DOI: 10.1371/journal.pone.0127641] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 04/17/2015] [Indexed: 11/19/2022] Open
Abstract
The myocyte enhancer factor 2 (MEF2) transcription factor requires interactions with co-factors for precise regulation of its target genes. Our lab previously reported that the mammalian MEF2A isoform regulates the cardiomyocyte costamere, a critical muscle-specific focal adhesion complex involved in contractility, through its transcriptional control of genes encoding proteins localized to this cytoskeletal structure. To further dissect the transcriptional mechanisms of costamere gene regulation and identify potential co-regulators of MEF2A, a bioinformatics analysis of transcription factor binding sites was performed using the proximal promoter regions of selected costamere genes. One of these predicted sites belongs to the early growth response (EGR) transcription factor family. The EGR1 isoform has been shown to be involved in a number of pathways in cardiovascular homeostasis and disease, making it an intriguing candidate MEF2 coregulator to further characterize. Here, we demonstrate that EGR1 interacts with MEF2A and is a potent and specific repressor of MEF2 transcriptional activity. Furthermore, we show that costamere gene expression in cardiomyocytes is dependent on EGR1 transcriptional activity. This study identifies a mechanism by which MEF2 activity can be modulated to ensure that costamere gene expression is maintained at levels commensurate with cardiomyocyte contractile activity.
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Loss of Egr-1 sensitizes pancreatic β-cells to palmitate-induced ER stress and apoptosis. J Mol Med (Berl) 2015; 93:807-18. [DOI: 10.1007/s00109-015-1272-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 01/23/2015] [Accepted: 02/11/2015] [Indexed: 01/07/2023]
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Lim JA, Li L, Kakhlon O, Myerowitz R, Raben N. Defects in calcium homeostasis and mitochondria can be reversed in Pompe disease. Autophagy 2015; 11:385-402. [PMID: 25758767 PMCID: PMC4502791 DOI: 10.1080/15548627.2015.1009779] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 09/08/2014] [Accepted: 11/28/2014] [Indexed: 02/08/2023] Open
Abstract
Mitochondria-induced oxidative stress and flawed autophagy are common features of neurodegenerative and lysosomal storage diseases (LSDs). Although defective autophagy is particularly prominent in Pompe disease, mitochondrial function has escaped examination in this typical LSD. We have found multiple mitochondrial defects in mouse and human models of Pompe disease, a life-threatening cardiac and skeletal muscle myopathy: a profound dysregulation of Ca(2+) homeostasis, mitochondrial Ca(2+) overload, an increase in reactive oxygen species, a decrease in mitochondrial membrane potential, an increase in caspase-independent apoptosis, as well as a decreased oxygen consumption and ATP production of mitochondria. In addition, gene expression studies revealed a striking upregulation of the β 1 subunit of L-type Ca(2+) channel in Pompe muscle cells. This study provides strong evidence that disturbance of Ca(2+) homeostasis and mitochondrial abnormalities in Pompe disease represent early changes in a complex pathogenetic cascade leading from a deficiency of a single lysosomal enzyme to severe and hard-to-treat autophagic myopathy. Remarkably, L-type Ca(2+)channel blockers, commonly used to treat other maladies, reversed these defects, indicating that a similar approach can be beneficial to the plethora of lysosomal and neurodegenerative disorders.
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Key Words
- AIFM1, apoptosis-inducing factor, mitochondrion-associated, 1
- CCCP, carbonyl cyanide m-chlorophenylhydrazone
- DMEM, Dulbecco's modified Eagle's medium
- EGTA, ethylene glycol-bis(2-aminoethylether)-N, N, N′, N′-tetraacetic acid
- ERT, enzyme replacement therapy
- GAA, glucosidase
- GFP, green fluorescent protein
- LAMP1, lysosomal-associated membrane protein 1
- LSD, lysosomal storage disease
- MAP1LC3A/B (LC3), microtubule-associated protein 1 light chain 3 α/β
- MOPS, 3-morpholinopropane-1-sulfonic acid
- MitoG, MitoTracker Green
- OMM, outer mitochondrial membrane
- Pompe disease
- RFP, red fluorescent protein
- ROS, reactive oxygen species
- TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labeling
- Ub, ubiquitinated
- VDCC, voltage-dependent Ca2+ channel
- autophagy
- calcium
- lysosome
- mitochondria
- mitophagy
- α, acid
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Affiliation(s)
- Jeong-A Lim
- Laboratory of Muscle Stem Cells and Gene Regulation; National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health; Bethesda; MD USA
| | - Lishu Li
- Laboratory of Muscle Stem Cells and Gene Regulation; National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health; Bethesda; MD USA
| | - Or Kakhlon
- Department of Neurology; Hadassah-Hebrew University Medical Center; Ein Kerem; Jerusalem, Israel
| | - Rachel Myerowitz
- Laboratory of Muscle Stem Cells and Gene Regulation; National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health; Bethesda; MD USA
- St. Mary's College of Maryland; St. Mary's City, MD USA
| | - Nina Raben
- Laboratory of Muscle Stem Cells and Gene Regulation; National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health; Bethesda; MD USA
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Influence of Egr-1 in cardiac tissue-derived mesenchymal stem cells in response to glucose variations. BIOMED RESEARCH INTERNATIONAL 2014; 2014:254793. [PMID: 24967343 PMCID: PMC4054710 DOI: 10.1155/2014/254793] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 05/06/2014] [Indexed: 01/03/2023]
Abstract
Mesenchymal stem cells (MSCs) represent a promising cell population for cell therapy and regenerative medicine applications. However, how variations in glucose are perceived by MSC pool is still unclear. Since, glucose metabolism is cell type and tissue dependent, this must be considered when MSCs are derived from alternative sources such as the heart. The zinc finger transcription factor Egr-1 is an important early response gene, likely to play a key role in the glucose-induced response. Our aim was to investigate how short-term changes in in vitro glucose concentrations affect multipotent cardiac tissue-derived MSCs (cMSCs) in a mouse model of Egr-1 KO (Egr-1−/−). Results showed that loss of Egr-1 does not significantly influence cMSC proliferation. In contrast, responses to glucose variations were observed in wt but not in Egr-1−/− cMSCs by clonogenic assay. Phenotype analysis by RT-PCR showed that cMSCs Egr-1−/− lost the ability to regulate the glucose transporters GLUT-1 and GLUT-4 and, as expected, the Egr-1 target genes VEGF, TGFβ-1, and p300. Acetylated protein levels of H3 histone were impaired in Egr-1−/− compared to wt cMSCs. We propose that Egr-1 acts as immediate glucose biological sensor in cMSCs after a short period of stimuli, likely inducing epigenetic modifications.
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