Abstract
The vascular wall is an integrated functional component of the circulatory system that is continually remodelling or is developing atherosclerosis in response to hemodynamic or biomechanical stress. In this process mechanical force is an important modulator of Vascular Smooth Muscle Cell (VSMC) morphology and function, including apoptosis, hypertrophy and proliferation that contribute to the development of atherosclerosis, hypertension, and restenosis. How VSMCs sense and transduce the extracellular mechanical signals into the cell nucleus resulting in quantitative and qualitative changes in gene expression is an interesting and important research field. It has been demonstrated that mechanical stress rapidly induces phosphorylation of the platelet-derived growth factor (PDGF) receptor, activation of integrin receptor, stretch-activated cation channels, and G proteins, which might serve as mechanosensors. Once the mechanical force is sensed, protein kinase C and Mitogen Activated Protein Kinases (MAPKs) were activated, leading to increased transcription factor activation. Thus, mechanical stresses can directly stretch the cell membrane and alter receptor or G protein conformation, thereby initiating signaling pathways, usually used by growth factors. Based on the progress in this field, this article attempts to formulate a biomechanical stress hypothesis, i.e. that physical force initiates signal pathways leading to vascular cell death and inflammatory response followed by VSMC proliferation. These findings have provided promising information for designing new drugs or genes for therapeutic interventions for vascular diseases.
Keywords: mechanical stress, smooth muscle cells, signal transduction, apoptosis, proliferation
Current Vascular Pharmacology
Title: Biomechanical Stress-induced Signaling in Smooth Muscle Cells: An Update
Volume: 1 Issue: 1
Author(s): Anthony Shaw and Qingbo Xu
Affiliation:
Keywords: mechanical stress, smooth muscle cells, signal transduction, apoptosis, proliferation
Abstract: The vascular wall is an integrated functional component of the circulatory system that is continually remodelling or is developing atherosclerosis in response to hemodynamic or biomechanical stress. In this process mechanical force is an important modulator of Vascular Smooth Muscle Cell (VSMC) morphology and function, including apoptosis, hypertrophy and proliferation that contribute to the development of atherosclerosis, hypertension, and restenosis. How VSMCs sense and transduce the extracellular mechanical signals into the cell nucleus resulting in quantitative and qualitative changes in gene expression is an interesting and important research field. It has been demonstrated that mechanical stress rapidly induces phosphorylation of the platelet-derived growth factor (PDGF) receptor, activation of integrin receptor, stretch-activated cation channels, and G proteins, which might serve as mechanosensors. Once the mechanical force is sensed, protein kinase C and Mitogen Activated Protein Kinases (MAPKs) were activated, leading to increased transcription factor activation. Thus, mechanical stresses can directly stretch the cell membrane and alter receptor or G protein conformation, thereby initiating signaling pathways, usually used by growth factors. Based on the progress in this field, this article attempts to formulate a biomechanical stress hypothesis, i.e. that physical force initiates signal pathways leading to vascular cell death and inflammatory response followed by VSMC proliferation. These findings have provided promising information for designing new drugs or genes for therapeutic interventions for vascular diseases.
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Cite this article as:
Shaw Anthony and Xu Qingbo, Biomechanical Stress-induced Signaling in Smooth Muscle Cells: An Update, Current Vascular Pharmacology 2003; 1 (1) . https://dx.doi.org/10.2174/1570161033386745
DOI https://dx.doi.org/10.2174/1570161033386745 |
Print ISSN 1570-1611 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6212 |
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