Mechanisms of myocardial regeneration.

Trends in Cardiovascular Medicine
Annarosa LeriPiero Anversa

Abstract

Traditionally, the adult heart has been viewed as a terminally differentiated postmitotic organ in which the number of cardiomyocytes is established at birth and these cells persist throughout the life span of the organ and organism. However, the discovery that cardiac stem cells live in the heart and differentiate into the various cardiac cell lineages has dramatically changed our understanding of myocardial biology. Deciphering the biological processes that lead to myocyte renewal is a challenging task. Cardiac regeneration may be accomplished by (1) commitment of multipotent stem cells that generate all specialized lineages within the parenchyma, (2) activation of unipotent progenitors with restricted differentiation potential, (3) replication of pre-existing differentiated cells, (4) transdifferentiation of exogenous progenitors that undergo plastic conversion into cells different from the organ of origin, and (5) dedifferentiation of cardiomyocytes that re-enter the cell cycle and divide. These multiple mechanisms of cell growth may act in concert to regenerate complex structures and restore the function of the target organ.

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Citations

Mar 13, 2014·European Journal of Cancer : Official Journal for European Organization for Research and Treatment of Cancer (EORTC) [and] European Association for Cancer Research (EACR)·Nedime SerakinciRikke Christensen
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Aug 28, 2021·International Journal of Molecular Sciences·Luc RochetteCatherine Vergely

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