Journal article
Intercellular and extracellular mechanotransduction in cardiac myocytes
Pflügers Archiv, v 462(1), pp 75-87
Jul 2011
PMID: 21437600
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Adult cardiomyocytes are terminally differentiated with minimal replicative capacity. Therefore, long-term preservation or enhancement of cardiac function depends on structural adaptation. Myocytes interact with the extracellular matrix, fibroblasts, and vascular cells and with each other (end to end; side to side). We review the current understanding of the mechanical determinants and environmental sensing systems that modulate and regulate myocyte molecular machinery and its structural organization. We feature the design and application of engineered cellular microenvironments to demonstrate the ability of cardiac cells to remodel their cytoskeletal organization and shape, including sarcomere/myofibrillar architectural topography. Cell shape-dependent functions result from complex mechanical interactions between the cytoskeleton architecture and external conditions, be they cell–cell or cell–extracellular matrix (ECM) adhesion contact-mediated. This mechanobiological perspective forms the basis for viewing the cardiomyocyte as a mechanostructural anisotropic continuum, exhibiting constant mechanosensory-driven self-regulated adjustment of the cytoskeleton through tight interplay between its force generation activity and concurrent cytoarchitectural remodeling. The unifying framework guiding this perspective is the observation that these emerging events and properties are initiated by and respond to cytoskeletal reorganization, regulated by cell–cell and cell–ECM adhesion and its corresponding (mutually interactive) signaling machinery. It is important for future studies to elucidate how cross talk between these mechanical signals is coordinated to control myocyte structure and function. Ultimately, understanding how the highly interactive mechanical signaling can give rise to phenotypic changes is critical for targeting the underlying pathways that contribute to cardiac remodeling associated with various forms of dilated and hypertrophic myopathies, myocardial infarction, heart failure, and reverse remodeling.
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Details
- Title
- Intercellular and extracellular mechanotransduction in cardiac myocytes
- Creators
- J Kresh - Departments of Cardiothoracic Surgery and Medicine Drexel University College of Medicine Philadelphia PA USAAnant Chopra - Department of Biomedical Engineering Drexel University Philadelphia PA USA
- Contributors
- Pieter P Tombe (Editor)Henk Granzier (Editor)
- Publication Details
- Pflügers Archiv, v 462(1), pp 75-87
- Publisher
- Springer-Verlag; Berlin/Heidelberg
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:000291604800009
- Scopus ID
- 2-s2.0-79958828808
- Other Identifier
- 991014877900004721
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- Web of Science research areas
- Physiology