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INVITED REVIEW

HIGHLIGHTED TOPICS
Biomechanics and Mechanotransduction in Cells and Tissues

Mechanical, biochemical, and extracellular matrix effects on vascular smooth muscle cell phenotype

¹Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York; and ²Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia

The vascular smooth muscle cell (VSMC) is surrounded by a complex extracellular matrix that provides and modulates a variety of biochemical and mechanical cues that guide cell function. Conventional two-dimensional monolayer culture systems recreate only a portion of the cellular environment, and therefore there is increasing interest in developing more physiologically relevant three-dimensional culture systems. This review brings together recent studies on how mechanical, biochemical, and extracellular matrix stimulation can be applied to study VSMC function and how the combination of these factors leads to changes in phenotype. Particular emphasis is placed on in vitro experimental studies in which multiple stimuli are combined, especially in three-dimensional culture systems and in vascular tissue engineering applications. These studies have provided new insight into how VSMC phenotype is controlled, and they have underscored the interdependence of biochemical and mechanical signaling. Future improvements in creating more complex in vitro culture environments will lead to a better understanding of VSMC biology, new treatments for vascular disease, as well as improved blood vessel substitutes.

cyclic mechanical strain; cell signaling; phenotype modulation; cell culture

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