Abstract
The spatial and temporal scales of cardiac organogenesis and pathogenesis make engineering of artificial heart tissue a daunting challenge. The temporal scales range from nanosecond conformational changes responsible for ion channel opening to fibrillation which occurs over seconds and can lead to death. Spatial scales range from nanometre pore sizes in membrane channels and gap junctions to the metre length scale of the whole cardiovascular system in a living patient. Synchrony over these scales requires a hierarchy of control mechanisms that are governed by a single common principle: integration of structure and function. To ensure that the function of ion channels and contraction of muscle cells lead to changes in heart chamber volume, an elegant choreography of metabolic, electrical and mechanical events are executed by protein networks composed of extracellular matrix, transmembrane integrin receptors and cytoskeleton which are functionally connected across all size scales. These structural control networks are mechanoresponsive, and they process mechanical and chemical signals in a massively parallel fashion, while also serving as a bidirectional circuit for information flow. This review explores how these hierarchical structural networks regulate the form and function of living cells and tissues, as well as how microfabrication techniques can be used to probe this structural control mechanism that maintains metabolic supply, electrical activation and mechanical pumping of heart muscle. Through this process, we delineate various design principles that may be useful for engineering artificial heart tissue in the future.
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Dates
Type | When |
---|---|
Created | 18 years, 2 months ago (June 25, 2007, 12:45 p.m.) |
Deposited | 2 years, 3 months ago (May 12, 2023, 12:18 p.m.) |
Indexed | 2 days, 20 hours ago (Aug. 31, 2025, 6:30 a.m.) |
Issued | 18 years, 2 months ago (June 22, 2007) |
Published | 18 years, 2 months ago (June 22, 2007) |
Published Online | 18 years, 2 months ago (June 22, 2007) |
Published Print | 18 years ago (Aug. 29, 2007) |
@article{Parker_2007, title={Extracellular matrix, mechanotransduction and structural hierarchies in heart tissue engineering}, volume={362}, ISSN={1471-2970}, url={http://dx.doi.org/10.1098/rstb.2007.2114}, DOI={10.1098/rstb.2007.2114}, number={1484}, journal={Philosophical Transactions of the Royal Society B: Biological Sciences}, publisher={The Royal Society}, author={Parker, Kevin K and Ingber, Donald E}, year={2007}, month=jun, pages={1267–1279} }