Cellular mechanosignaling in pulmonary arterial hypertension |
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Authors: | Ariel Wang Daniela Valdez-Jasso |
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Affiliation: | Bioengineering Department, University of California San Diego, La Jolla, CA USA |
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Abstract: | Pulmonary arterial hypertension (PAH) is a vasculopathy characterized by sustained elevated pulmonary arterial pressures in which the pulmonary vasculature undergoes significant structural and functional remodeling. To better understand disease mechanisms, in this review article we highlight recent insights into the regulation of pulmonary arterial cells by mechanical cues associated with PAH. Specifically, the mechanobiology of pulmonary arterial endothelial cells (PAECs), smooth muscle cells (PASMCs) and adventitial fibroblasts (PAAFs) has been investigated in vivo, in vitro, and in silico. Increased pulmonary arterial pressure increases vessel wall stress and strain and endothelial fluid shear stress. These mechanical cues promote vasoconstriction and fibrosis that contribute further to hypertension and alter the mechanical milieu and regulation of pulmonary arterial cells. |
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Keywords: | Mechanosignaling Pulmonary arterial endothelial cells Pulmonary arterial smooth muscle cells Pulmonary arterial adventitial fibroblasts Stiffness Stretch Computational model |
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