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      Repression of Osmr and Fgfr1 by miR-1/133a prevents cardiomyocyte dedifferentiation and cell cycle entry in the adult heart

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          Abstract

          Abstract

          The muscle-specific miR-1 and miR-133a RNAs lock cardiomyocytes in a differentiated state by suppressing OSMR/FGFR signaling.

          Abstract

          Dedifferentiation of cardiomyocytes is part of the survival program in the remodeling myocardium and may be essential for enabling cardiomyocyte proliferation. In addition to transcriptional processes, non-coding RNAs play important functions for the control of cell cycle regulation in cardiomyocytes and cardiac regeneration. Here, we demonstrate that suppression of FGFR1 and OSMR by miR-1/133a is instrumental to prevent cardiomyocyte dedifferentiation and cell cycle entry in the adult heart. Concomitant inactivation of both miR-1/133a clusters in adult cardiomyocytes activates expression of cell cycle regulators, induces a switch from fatty acid to glycolytic metabolism, and changes expression of extracellular matrix genes. Inhibition of FGFR and OSMR pathways prevents most effects of miR-1/133a inactivation. Short-term miR-1/133a depletion protects cardiomyocytes against ischemia, while extended loss of miR-1/133a causes heart failure. Our results demonstrate a crucial role of miR-1/133a–mediated suppression of Osmr and Ffgfr1 in maintaining the postmitotic differentiated state of cardiomyocytes.

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          Gene set enrichment analysis: A knowledge-based approach for interpreting genome-wide expression profiles

          Although genomewide RNA expression analysis has become a routine tool in biomedical research, extracting biological insight from such information remains a major challenge. Here, we describe a powerful analytical method called Gene Set Enrichment Analysis (GSEA) for interpreting gene expression data. The method derives its power by focusing on gene sets, that is, groups of genes that share common biological function, chromosomal location, or regulation. We demonstrate how GSEA yields insights into several cancer-related data sets, including leukemia and lung cancer. Notably, where single-gene analysis finds little similarity between two independent studies of patient survival in lung cancer, GSEA reveals many biological pathways in common. The GSEA method is embodied in a freely available software package, together with an initial database of 1,325 biologically defined gene sets.
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            PGC-1alpha-responsive genes involved in oxidative phosphorylation are coordinately downregulated in human diabetes.

            DNA microarrays can be used to identify gene expression changes characteristic of human disease. This is challenging, however, when relevant differences are subtle at the level of individual genes. We introduce an analytical strategy, Gene Set Enrichment Analysis, designed to detect modest but coordinate changes in the expression of groups of functionally related genes. Using this approach, we identify a set of genes involved in oxidative phosphorylation whose expression is coordinately decreased in human diabetic muscle. Expression of these genes is high at sites of insulin-mediated glucose disposal, activated by PGC-1alpha and correlated with total-body aerobic capacity. Our results associate this gene set with clinically important variation in human metabolism and illustrate the value of pathway relationships in the analysis of genomic profiling experiments.
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              The Fibroblast Growth Factor signaling pathway

              The signaling component of the mammalian Fibroblast Growth Factor (FGF) family is comprised of eighteen secreted proteins that interact with four signaling tyrosine kinase FGF receptors (FGFRs). Interaction of FGF ligands with their signaling receptors is regulated by protein or proteoglycan cofactors and by extracellular binding proteins. Activated FGFRs phosphorylate specific tyrosine residues that mediate interaction with cytosolic adaptor proteins and the RAS-MAPK, PI3K-AKT, PLCγ, and STAT intracellular signaling pathways. Four structurally related intracellular non-signaling FGFs interact with and regulate the family of voltage gated sodium channels. Members of the FGF family function in the earliest stages of embryonic development and during organogenesis to maintain progenitor cells and mediate their growth, differentiation, survival, and patterning. FGFs also have roles in adult tissues where they mediate metabolic functions, tissue repair, and regeneration, often by reactivating developmental signaling pathways. Consistent with the presence of FGFs in almost all tissues and organs, aberrant activity of the pathway is associated with developmental defects that disrupt organogenesis, impair the response to injury, and result in metabolic disorders, and cancer. © 2015 Wiley Periodicals, Inc.
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                Author and article information

                Contributors
                Role: Formal analysisRole: InvestigationRole: MethodologyRole: ValidationRole: VisualizationRole: Writing - original draftRole: Writing - review & editing
                Role: ConceptualizationRole: Formal analysisRole: InvestigationRole: MethodologyRole: VisualizationRole: Writing - original draft
                Role: ConceptualizationRole: Formal analysisRole: InvestigationRole: MethodologyRole: ValidationRole: Writing - original draftRole: Writing - review & editing
                Role: Formal analysisRole: InvestigationRole: MethodologyRole: ResourcesRole: SupervisionRole: Validation
                Role: Resources
                Role: ConceptualizationRole: InvestigationRole: MethodologyRole: ResourcesRole: VisualizationRole: Writing - review & editing
                Role: ConceptualizationRole: Data curationRole: Formal analysisRole: Funding acquisitionRole: MethodologyRole: Project administrationRole: ResourcesRole: SupervisionRole: ValidationRole: VisualizationRole: Writing - original draftRole: Writing - review & editing
                Role: ConceptualizationRole: Funding acquisitionRole: MethodologyRole: Project administrationRole: ResourcesRole: SupervisionRole: ValidationRole: VisualizationRole: Writing - original draftRole: Writing - review & editing
                Journal
                Sci Adv
                sciadv
                advances
                Science Advances
                American Association for the Advancement of Science
                2375-2548
                October 2021
                13 October 2021
                : 7
                : 42
                : eabi6648
                Affiliations
                [1 ]Department of Cardiac Development and Remodelling, Max Planck Institute for Heart and Lung Research, Ludwigstrasse 43, D-61231 Bad Nauheim, Germany.
                [2 ]Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, D-60590 Frankfurt am Main, Germany.
                [3 ]Department of Cardiac Surgery, Kerckhoff Heart Center, Benekestrasse 2-8, D-61231 Bad Nauheim, Germany.
                [4 ]German Center for Cardiovascular Research (DZHK), Berlin, Germany.
                [5 ]German Center for Lung Research (DZL), Giessen, Germany.
                Author notes
                [* ]Corresponding author. Email: thomas.boettger@ 123456mpi-bn.mpg.de (T.Bo.); thomas.braun@ 123456mpi-bn.mpg.de (T.Br.)
                Author information
                https://orcid.org/0000-0001-8079-4776
                https://orcid.org/0000-0002-1811-4562
                https://orcid.org/0000-0002-6239-3503
                https://orcid.org/0000-0003-4280-8449
                https://orcid.org/0000-0002-6165-4804
                Article
                abi6648
                10.1126/sciadv.abi6648
                8514096
                34644107
                1d332a2f-249d-48c3-9b4c-860379ccc283
                Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

                This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

                History
                : 23 March 2021
                : 19 August 2021
                Funding
                Funded by: doi http://dx.doi.org/10.13039/100005930, ASCRS Research Foundation;
                Award ID: 267 TP A05
                Funded by: doi http://dx.doi.org/10.13039/100005930, ASCRS Research Foundation;
                Award ID: RTG2355
                Funded by: doi http://dx.doi.org/10.13039/100005930, ASCRS Research Foundation;
                Award ID: 1213 TP B02
                Funded by: doi http://dx.doi.org/10.13039/100005930, ASCRS Research Foundation;
                Award ID: 81 TP A02
                Funded by: doi http://dx.doi.org/10.13039/100005930, ASCRS Research Foundation;
                Funded by: doi http://dx.doi.org/10.13039/100010447, Deutsches Zentrum far Herz-Kreislaufforschung;
                Award ID: 81Z0200302
                Funded by: doi http://dx.doi.org/10.13039/100010447, Deutsches Zentrum far Herz-Kreislaufforschung;
                Funded by: doi http://dx.doi.org/10.13039/501100013430, China Power Investment Corporation;
                Award ID: EXC2026
                Funded by: doi http://dx.doi.org/10.13039/501100013430, China Power Investment Corporation;
                Award ID: 390649896
                Funded by: doi http://dx.doi.org/10.13039/501100001659, Deutsche Forschungsgemeinschaft;
                Funded by: doi http://dx.doi.org/10.13039/501100017484, Temasek Polytechnic;
                Funded by: doi http://dx.doi.org/10.13039/501100013430, China Power Investment Corporation;
                Funded by: doi http://dx.doi.org/10.13039/501100001659, Deutsche Forschungsgemeinschaft;
                Award ID: RTG 2355
                Funded by: doi http://dx.doi.org/10.13039/501100001659, Deutsche Forschungsgemeinschaft;
                Award ID: SFB 1213
                Funded by: doi http://dx.doi.org/10.13039/501100001659, Deutsche Forschungsgemeinschaft;
                Award ID: TRR 81
                Funded by: doi http://dx.doi.org/10.13039/501100001659, Deutsche Forschungsgemeinschaft;
                Award ID: CPI
                Funded by: doi http://dx.doi.org/10.13039/501100002347, Bundesministerium fur Bildung und Forschung;
                Award ID: DZHK
                Funded by: doi http://dx.doi.org/10.13039/501100001659, Deutsche Forschungsgemeinschaft;
                Award ID: TRR 267
                Categories
                Research Article
                Biomedicine and Life Sciences
                SciAdv r-articles
                Organismal Biology
                Life Sciences
                Cell Biology
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