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Published on: September 14, 2021
Signalling via stress-activated mitogen-activated protein kinases in the cardiovascular system
1Department of Biochemistry, University of Western Australia, Nedlands, Australia. marieb@cyllene.uwa.edu.au
Insights
Mitogen-activated protein kinase (MAPK) cascades are crucial for cardiac hypertrophy and heart failure. Understanding MAPK regulation in cardiac myocytes is key to developing effective cardiovascular disease treatments.
Area of Science:
- Cardiovascular Physiology
- Molecular Biology
- Cell Signaling
Background:
- Cardiac hypertrophy and heart failure are initiated by diverse stimuli.
- Intracellular signaling events regulating these conditions are complex.
- Mitogen-activated protein kinase (MAPK) cascades are increasingly recognized for their role in cardiovascular diseases.
Purpose of the Study:
- To review recent progress in understanding MAPK regulation and function in the cardiovascular system.
- To emphasize the role of MAPKs in cardiac ventricular myocytes.
- To clarify signaling events that regulate cardiac growth, remodeling, and failure.
Main Methods:
- Literature review of recent research on MAPKs in the cardiovascular system.
- Focus on signaling pathways linking extracellular stimuli to cardiac gene expression and protein function.
- Emphasis on studies involving cardiac ventricular myocytes.
Main Results:
- MAPK cascades are central to the response to physiological, pharmacological, and pathological stimuli.
- These pathways link diverse extracellular signals to the regulation of cardiac gene expression and protein function.
- MAPKs play a significant role in the development of cardiac hypertrophy and failure.
Conclusions:
- Clarifying MAPK signaling is essential for effective treatment of hypertrophic and failing myocardium.
- MAPK pathways are critical regulators of cardiac growth, remodeling, and failure.
- Further research into MAPK function in cardiac myocytes will advance cardiovascular disease therapies.
Abstract:
A number of physiological, pharmacological and pathological stimuli initiate cardiac hypertrophy. The intracellular signalling events activated by these stimuli are equally complex. Our ability to treat the hypertrophic and failing myocardium effectively will require clarification of which signalling events regulate growth, remodelling and failure. Much recent attention has focused on the regulation of the mitogen-activated protein kinase cascades (MAPKs), with the importance of these cascades in the development of cardiovascular diseases being extensively explored. These signalling pathways may provide one link from the diverse stress and pharmacological extracellular stimuli to the regulation of gene expression, contractile protein regulation and protein function. This review focuses on the recent progress made in the understanding of the regulation and function of MAPKs in the cardiovascular system, with particular emphasis being placed on the events in the cardiac ventricular myocyte.
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