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Extracellular Matrix in Regulation of Contractile System in Cardiomyocytes

Institute of Cytology, Russian Academy of Sciences, St-Petersburg 194064, Russia
Int. J. Mol. Sci. 2019, 20(20), 5054;
Received: 5 September 2019 / Revised: 7 October 2019 / Accepted: 9 October 2019 / Published: 11 October 2019
(This article belongs to the Special Issue Extracellular Matrix in Development and Disease 2.0)
The contractile apparatus of cardiomyocytes is considered to be a stable system. However, it undergoes strong rearrangements during heart development as cells progress from their non-muscle precursors. Long-term culturing of mature cardiomyocytes is also accompanied by the reorganization of their contractile apparatus with the conversion of typical myofibrils into structures of non-muscle type. Processes of heart development as well as cell adaptation to culture conditions in cardiomyocytes both involve extracellular matrix changes, which appear to be crucial for the maturation of contractile apparatus. The aim of this review is to analyze the role of extracellular matrix in the regulation of contractile system dynamics in cardiomyocytes. Here, the remodeling of actin contractile structures and the expression of actin isoforms in cardiomyocytes during differentiation and adaptation to the culture system are described along with the extracellular matrix alterations. The data supporting the regulation of actin dynamics by extracellular matrix are highlighted and the possible mechanisms of such regulation are discussed. View Full-Text
Keywords: cardiomyocyte; actin contractile system; extracellular matrix cardiomyocyte; actin contractile system; extracellular matrix
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Bildyug, N. Extracellular Matrix in Regulation of Contractile System in Cardiomyocytes. Int. J. Mol. Sci. 2019, 20, 5054.

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