Histone deacetylase 1 controls cardiomyocyte proliferation during embryonic heart development and cardiac regeneration in zebrafish

Autor: Alexander Pott, Rhett A. Kovall, Deung-Dae Park, Alberto Bertozzi, Bernhard Kühn, Gilbert Weidinger, Alena Boos, Bernd M. Gahr, Steffen Just, Mohankrishna Dalvoy, Anja Bühler, Franz Oswald, Wolfgang Rottbauer
Rok vydání: 2021
Předmět:
Embryology
Cancer Research
TBX20
Cardiovascular Procedures
Heart growth
Histone Deacetylase 1
QH426-470
Biochemistry
Histones
Animal Cells
Heart Regeneration
Medicine and Health Sciences
Morphogenesis
Myocytes
Cardiac
Zebrafish
Genetics (clinical)
Cardiomyocytes
biology
Embryonic heart
Eukaryota
Heart
Animal Models
Cell biology
Histone
Experimental Organism Systems
Osteichthyes
Vertebrates
embryonic structures
Cellular Types
Anatomy
biological phenomena
cell phenomena
and immunity
Research Article
animal structures
Positional cloning
Cardiac Ventricles
Muscle Tissue
Surgical and Invasive Medical Procedures
Research and Analysis Methods
Model Organisms
DNA-binding proteins
Genetics
Animals
Regeneration
Molecular Biology
Ecology
Evolution
Behavior and Systematics
Cell Proliferation
Coronary Revascularization
Muscle Cells
Revascularization
Regeneration (biology)
Embryos
Organisms
Biology and Life Sciences
Proteins
Cell Biology
Zebrafish Proteins
biology.organism_classification
HDAC1
enzymes and coenzymes (carbohydrates)
Biological Tissue
Fish
Animal Studies
Cardiovascular Anatomy
biology.protein
Zoology
Organism Development
Developmental Biology
Zdroj: PLoS Genetics, Vol 17, Iss 11 (2021)
PLoS Genetics, Vol 17, Iss 11, p e1009890 (2021)
PLoS Genetics
ISSN: 1553-7404
Popis: In contrast to mammals, the zebrafish maintains its cardiomyocyte proliferation capacity throughout adulthood. However, neither the molecular mechanisms that orchestrate the proliferation of cardiomyocytes during developmental heart growth nor in the context of regeneration in the adult are sufficiently defined yet. We identified in a forward genetic N-ethyl-N-nitrosourea (ENU) mutagenesis screen the recessive, embryonic-lethal zebrafish mutant baldrian (bal), which shows severely impaired developmental heart growth due to diminished cardiomyocyte proliferation. By positional cloning, we identified a missense mutation in the zebrafish histone deacetylase 1 (hdac1) gene leading to severe protein instability and the loss of Hdac1 function in vivo. Hdac1 inhibition significantly reduces cardiomyocyte proliferation, indicating a role of Hdac1 during developmental heart growth in zebrafish. To evaluate whether developmental and regenerative Hdac1-associated mechanisms of cardiomyocyte proliferation are conserved, we analyzed regenerative cardiomyocyte proliferation after Hdac1 inhibition at the wound border zone in cryoinjured adult zebrafish hearts and we found that Hdac1 is also essential to orchestrate regenerative cardiomyocyte proliferation in the adult vertebrate heart. In summary, our findings suggest an important and conserved role of Histone deacetylase 1 (Hdac1) in developmental and adult regenerative cardiomyocyte proliferation in the vertebrate heart.
Author summary Heart disease is one of the most common causes of death in all developed countries. While zebrafish cardiomyocytes are able to proliferate throughout adulthood, mammalian cardiomyocytes lose this ability during early development, and therefore are not capable to replace and renew cardiomyocytes after injury. The underlying mechanisms of cardiomyocyte proliferation are still not completely resolved. Understanding how zebrafish cardiomyocytes preserve their proliferating state, would be a valuable information to foster cardiac regeneration, e.g. after myocardial infarction in patients. Knowledge of the signaling pathways that need to be activated, or deactivated in order to induce cardiomyocyte proliferation after acute or chronic injury will pave the way for the development of genetic and/or pharmacological treatment options. In an ENU-mutagenesis screen, we identified the zebrafish mutant baldrian, which shows reduced embryonic cardiomyocyte proliferation. As genetic cause of the observed phenotype, we identified a missense mutation in the hdac1 gene. By treatment of heart-injured adult fish with the HDAC1 inhibitor Mocetinostat, we were able to show a reduced rate of cardiomyocyte proliferation also in the adult zebrafish heart in vivo, suggesting a role of Hdac1 in embryonic heart growth and adult regenerative cardiomyocyte proliferation in zebrafish.
Databáze: OpenAIRE
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