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Bottermann K, Spychala A, Eliacik A, Amin E, Moussavi-Torshizi SE, Klöcker N, Gödecke A, Heinen A. Extracellular flux analysis in intact cardiac tissue slices-A novel tool to investigate cardiac substrate metabolism in mouse myocardium. Acta Physiol (Oxf) 2023; 239:e14004. [PMID: 37227741 DOI: 10.1111/apha.14004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/17/2023] [Accepted: 05/21/2023] [Indexed: 05/26/2023]
Abstract
AIM Cardiac pathologies are accompanied by alterations in substrate metabolism, and extracellular flux analysis is a standard tool to investigate metabolic disturbances, especially in immortalized cell lines. However, preparations of primary cells, such as adult cardiomyocytes require enzymatic dissociation and cultivation affecting metabolism. Therefore, we developed a flux analyzer-based method for the assessment of substrate metabolism in intact vibratome-sliced mouse heart tissue. METHODS Oxygen consumption rates were determined using a Seahorse XFe24-analyzer and "islet capture plates." We demonstrate that tissue slices are suitable for extracellular flux analysis and metabolize both free fatty acids (FFA) and glucose/glutamine. Functional integrity of tissue slices was proven by optical mapping-based assessment of action potentials. In a proof-of-principle approach, the sensitivity of the method was tested by analyzing substrate metabolism in the remote myocardium after myocardial infarction (I/R). RESULTS Here, I/R increased uncoupled OCR compared with sham animals indicating a stimulated metabolic capacity. This increase was caused by a higher glucose/glutamine metabolism, whereas FFA oxidation was unchanged. CONCLUSION In conclusion, we describe a novel method to analyze cardiac substrate metabolism in intact cardiac tissue slices by extracellular flux analysis. The proof-of-principle experiment demonstrated that this approach has a sensitivity allowing the investigation of pathophysiologically relevant disturbances in cardiac substrate metabolism.
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Affiliation(s)
- Katharina Bottermann
- Institute for Pharmacology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Andre Spychala
- Institute for Cardiovascular Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Asena Eliacik
- Institute for Cardiovascular Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Ehsan Amin
- Institute of Neural und Sensory Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - S Erfan Moussavi-Torshizi
- Institute of Neural und Sensory Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Nikolaj Klöcker
- Institute of Neural und Sensory Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Axel Gödecke
- Institute for Cardiovascular Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Andre Heinen
- Institute for Cardiovascular Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
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2
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Izadifar M, Berecz T, Li B, Tang JKKY, Foldes G, Apati A, Nagy A. Speckle-Tracking Strain Analysis for Mapping Spatiotemporal Contractility of Induced Pluripotent Stem Cell (iPSC)-Derived Cardiomyocytes. Curr Protoc 2023; 3:e889. [PMID: 37747346 DOI: 10.1002/cpz1.889] [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] [Indexed: 09/26/2023]
Abstract
Human induced pluripotent stem cell (hiPSC)-derived cardiomyocytes (hiPSC-CMs) hold tremendous potential for cardiovascular disease modeling, drug screening, personalized medicine, and pathophysiology studies. The availability of a robust protocol and functional assay for studying phenotypic behavior of hiPSC-CMs is essential for establishing an in vitro disease model. Many heart diseases manifest due to changes in the mechanical strain of cardiac tissue. Therefore, non-invasive evaluation of the contractility properties of hiPSC-CMs remains crucial to gain an insight into the pathogenesis of cardiac diseases. Speckle tracking-based strain analysis is an efficient non-invasive method that uses video microscopy and image analysis of beating hiPSC-CMs for quantitative evaluation of mechanical contractility properties. This article presents step-by-step protocols for extracting quantitative contractility properties of an hiPSC-CM system obtained from five members of a family, of whom three were affected by DiGeorge syndrome, using speckle tracking-based strain analysis. The hiPSCs from the family members were differentiated and purified into hiPSC-CMs using metabolic selection. Time-lapse images of hiPSC-CMs were acquired using high-spatial-resolution and high-time-resolution phase-contrast video microscopy. Speckled images were characterized by evaluating the cross-correlation coefficient, speckle size, speckle contrast, and speckle quality of the images. The optimum parameters of the speckle tracking algorithm were determined by performing sensitivity analysis concerning computation time, effective mapping area, average contraction velocity, and strain. Furthermore, the hiPSC-CM response to adrenaline was evaluated to validate the sensitivity of the strain analysis algorithm. Then, we applied speckle tracking-based strain analysis to characterize the dynamic behavior of patient-specific hiPSC-CMs from the family members affected/unaffected by DiGeorge syndrome. Here, we report an efficient and manipulation-free method to analyze the contraction displacement vector and velocity field, contraction-relaxation strain rate, and contractile cycles. Implementation of this method allows for quantitative analysis of the contractile phenotype characteristics of hiPSC-CMs to distinguish possible cardiac manifestation of DiGeorge syndrome. © 2023 Wiley Periodicals LLC. Basic Protocol 1: Differentiation of iPSCs into iPSC-derived cardiomyocytes (iPSC-CMs) and metabolic selection of differentiated iPSC-CMs Support Protocol 1: Culture, maintenance, and expansion of human iPSCs Support Protocol 2: Immunohistochemistry of iPSC-CMs Basic Protocol 2: Time-lapse speckle imaging of iPSC-CMs and speckle quality characterization Support Protocol 3: Enhancement of local contrast of videos by applying contrast limited adaptive histogram equalization (CLAHE) to all frames Support Protocol 4: Evaluation of average speckle size Support Protocol 5: Evaluation of average speckle contrast Support Protocol 6: Determination of relative peak height, Pc(x), of consecutive images acquired from video microscopy of iPSC-CMs Basic Protocol 3: Speckle tracking-based analysis of beating iPSC-CMs Support Protocol 7: Validation of sensitivity of the speckle tracking analysis for mapping the contractility of iPSC-CMs Basic Protocol 4: Data extraction, visualization, and mapping of contractile cycles of iPSC-CMs.
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Affiliation(s)
- Mohammad Izadifar
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada
| | - Tunde Berecz
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary
| | - Biao Li
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada
| | | | - Gabor Foldes
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Agota Apati
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary
| | - Andras Nagy
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada
- Australian Regenerative Medicine Institute, Monash University, Melbourne, Victoria, Australia
- Department of Obstetrics and Gynecology, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
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Abstract
Over the last half century, the autofluorescence of the metabolic cofactors NADH (reduced nicotinamide adenine dinucleotide) and FAD (flavin adenine dinucleotide) has been quantified in a variety of cell types and disease states. With the spread of nonlinear optical microscopy techniques in biomedical research, NADH and FAD imaging has offered an attractive solution to noninvasively monitor cell and tissue status and elucidate dynamic changes in cell or tissue metabolism. Various tools and methods to measure the temporal, spectral, and spatial properties of NADH and FAD autofluorescence have been developed. Specifically, an optical redox ratio of cofactor fluorescence intensities and NADH fluorescence lifetime parameters have been used in numerous applications, but significant work remains to mature this technology for understanding dynamic changes in metabolism. This article describes the current understanding of our optical sensitivity to different metabolic pathways and highlights current challenges in the field. Recent progress in addressing these challenges and acquiring more quantitative information in faster and more metabolically relevant formats is also discussed.
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Affiliation(s)
- Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA;
- Genetics, Molecular and Cellular Biology Program, Graduate School of Biomedical Sciences, Tufts University, Boston, Massachusetts, USA
| | - Kyle P Quinn
- Department of Biomedical Engineering and the Arkansas Integrative Metabolic Research Center, University of Arkansas, Fayetteville, Arkansas, USA
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4
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Fuchs S, van Helden RW, Wiendels M, de Graaf MN, Orlova VV, Mummery CL, van Meer BJ, Mayr T. On-chip analysis of glycolysis and mitochondrial respiration in human induced pluripotent stem cells. Mater Today Bio 2022; 17:100475. [DOI: 10.1016/j.mtbio.2022.100475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/20/2022] [Accepted: 10/22/2022] [Indexed: 11/08/2022]
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Du Z, Zhu T, Lin M, Bao Y, Qiao J, Lv G, Xie Y, Li Q, Quan J, Xu C, Xie Y, Wang L, Yang W, Wang S, Wu L, Yin T, Xie Y. A novel mutation in human
EMD
gene and mitochondrial dysfunction in emerin knockdown cardiomyocytes. J Cell Mol Med 2022; 26:5054-5066. [PMID: 36106556 PMCID: PMC9549503 DOI: 10.1111/jcmm.17532] [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: 03/24/2022] [Revised: 08/05/2022] [Accepted: 08/17/2022] [Indexed: 11/27/2022] Open
Abstract
Emerin is an inner nuclear envelope protein encoded by the EMD gene, mutations in which cause Emery–Dreifuss muscular dystrophy type 1 (EDMD1). Cardiac involvement has become a major threat to patients with EDMD1; however, the cardiovascular phenotype spectrums of emerinopathy and the mechanisms by which emerin regulates cardiac pathophysiology remain unclear. Here, we identified a novel nonsense mutation (c.C57G, p.Y19X) in the EMD gene in a Han Chinese family through high‐throughput sequencing. Two family members were found to have EDMD1 with muscle weakness and cardiac arrhythmia. Mechanistically, we first discovered that knockdown of emerin in HL‐1 or H9C2 cardiomyocytes lead to impaired mitochondrial oxidative phosphorylation capacity with downregulation of electron transport chain complex I and IV and upregulation of complex III and V. Moreover, loss of emerin in HL‐1 cells resulted in collapsed mitochondrial membrane potential, altered mitochondrial networks and downregulated multiple factors in RNA and protein level, such as PGC1α, DRP1, MFF, MFN2, which are involved in regulation of mitochondrial biogenesis, fission and fusion. Our findings suggest that targeting mitochondrial bioenergetics might be an effective strategy against cardiac disorders caused by EMD mutations.
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Affiliation(s)
- Zunhui Du
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Tinfang Zhu
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Menglu Lin
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Yangyang Bao
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Jing Qiao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Gang Lv
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Yinyin Xie
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Qihen Li
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Jinwei Quan
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Cathy Xu
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Yuan Xie
- Johns Hopkins University Baltimore Maryland USA
| | - Lingjie Wang
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Wenjie Yang
- Department of Radiology, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Shengyue Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Liqun Wu
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Tong Yin
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Yucai Xie
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
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Fulghum K, Collins HE, Jones SP, Hill BG. Influence of biological sex and exercise on murine cardiac metabolism. JOURNAL OF SPORT AND HEALTH SCIENCE 2022; 11:479-494. [PMID: 35688382 PMCID: PMC9338340 DOI: 10.1016/j.jshs.2022.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/07/2022] [Accepted: 04/27/2022] [Indexed: 05/03/2023]
Abstract
Although the structural and functional effects of exercise on the heart are well established, the metabolic changes that occur in the heart during and after exercise remain unclear. In this study, we used metabolomics to assess time-dependent changes in the murine cardiac metabolome following 1 session of treadmill exercise. After the exercise bout, we also recorded blood lactate, glucose, and ketone body levels and measured cardiac mitochondrial respiration. In both male and female mice, moderate- and high-intensity exercise acutely increased blood lactate levels. In both sexes, low- and moderate-intensity exercise augmented circulating 3-hydroxybutryrate levels immediately after the exercise bout; however, only in female mice did high-intensity exercise increase 3-hydroxybutyrate levels, with significant increases occurring 1 h after the exercise session. Untargeted metabolomics analyses of sedentary female and male hearts suggest considerable sex-dependent differences in basal cardiac metabolite levels, with female hearts characterized by higher levels of pantothenate, pyridoxamine, homoarginine, tryptophan, and several glycerophospholipid and sphingomyelin species and lower levels of numerous metabolites, including acetyl coenzyme A, glucuronate, gulonate, hydroxyproline, prolyl-hydroxyproline, carnosine, anserine, and carnitinylated and glycinated species, as compared with male hearts. Immediately after a bout of treadmill exercise, both male and female hearts had higher levels of corticosterone; however, female mice showed more extensive exercise-induced changes in the cardiac metabolome, characterized by significant, time-dependent changes in amino acids (e.g., serine, alanine, tyrosine, tryptophan, branched-chain amino acids) and the ketone body 3-hydroxybutyrate. Results from experiments using isolated cardiac mitochondria suggest that high-intensity treadmill exercise does not acutely affect respiration or mitochondrial coupling; however, female cardiac mitochondria demonstrate generally higher adenosine diphosphate sensitivity compared with male cardiac mitochondria. Collectively, these findings in mice reveal key sex-dependent differences in cardiac metabolism and suggest that the metabolic network in the female heart is more responsive to physiological stress caused by exercise.
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Affiliation(s)
- Kyle Fulghum
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA; Department of Physiology, University of Louisville, Louisville, KY 40202, USA
| | - Helen E Collins
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA
| | - Steven P Jones
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA
| | - Bradford G Hill
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA.
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7
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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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8
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Abouleisa RRE, McNally L, Salama ABM, Hammad SK, Ou Q, Wells C, Lorkiewicz PK, Bolli R, Mohamed TMA, Hill BG. Cell cycle induction in human cardiomyocytes is dependent on biosynthetic pathway activation. Redox Biol 2021; 46:102094. [PMID: 34418597 PMCID: PMC8379496 DOI: 10.1016/j.redox.2021.102094] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/27/2021] [Accepted: 08/04/2021] [Indexed: 01/03/2023] Open
Abstract
AIMS The coordinated gene and metabolic programs that facilitate cardiomyocyte entry and progression in the cell cycle are poorly understood. The purpose of this study was to identify the metabolic changes that influence myocyte proliferation. METHODS AND RESULTS In adult mouse cardiomyocytes and human induced pluripotent stem cell cardiomyocytes (hiPS-CMs), cell cycle initiation by ectopic expression of Cyclin B1, Cyclin D1, CDK1, and CDK4 (termed 4F) downregulated oxidative phosphorylation genes and upregulated genes that regulate ancillary biosynthetic pathways of glucose metabolism. Results from metabolic analyses and stable isotope tracing experiments indicate that 4F-mediated cell cycle induction in hiPS-CMs decreases glucose oxidation and oxidative phosphorylation and augments NAD+, glycogen, hexosamine, phospholipid, and serine biosynthetic pathway activity. Interventions that diminish NAD+ synthesis, serine synthesis, or protein O-GlcNAcylation decreased 4F-mediated cell cycle entry. In a gain of function approach, we overexpressed phosphoenolpyruvate carboxykinase 2 (PCK2), which can drive carbon from the Krebs cycle to the glycolytic intermediate pool, and found that PCK2 augments 4F-mediated cell cycle entry. CONCLUSIONS These findings suggest that a metabolic shift from catabolic to anabolic activity is a critical step for cardiomyocyte cell cycle entry and is required to facilitate proliferation.
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Affiliation(s)
- Riham R E Abouleisa
- Institute of Molecular Cardiology, Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Lindsey McNally
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Abou Bakr M Salama
- Institute of Molecular Cardiology, Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Cardiovascular Medicine, Faculty of Medicine, Zagazig University, Zagazig, Egypt; Department of Cardiac Surgery, Verona University, Verona, Italy
| | - Sally K Hammad
- Institute of Molecular Cardiology, Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Egypt
| | - Qinghui Ou
- Institute of Molecular Cardiology, Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Collin Wells
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Pawel K Lorkiewicz
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Chemistry, University of Louisville, KY, USA
| | - Roberto Bolli
- Institute of Molecular Cardiology, Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Tamer M A Mohamed
- Institute of Molecular Cardiology, Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville, KY, USA; Institute of Cardiovascular Sciences, University of Manchester, UK; Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Egypt.
| | - Bradford G Hill
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA.
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