Mechanometabolism: recent findings on the intersection of cell adhesion, cell migration, and metabolism

Abstract

Chemical and mechanical cues within the extracellular matrix (ECM) can initiate intracellular signaling that changes an array of fundamental cell functions. In recent work, studies of cell-ECM adhesion have deepened to include the influence of the physical ECM on cell metabolism. Since many biological processes involve metabolic programs, changes to cellular metabolism in response to cues in the ECM can have marked effects on cell health. In this review, we describe molecular mechanisms associated with cell-ECM adhesion that are key players in metabolism-induced changes to cell behaviors, including migration. We first review how changes to metabolite availability in the extracellular environment or manipulation of metabolic machinery in cells impact focal adhesions. We then connect this work to recent findings regarding the reverse relationship, namely, how the manipulation of focal adhesion proteins or integrins feeds back to alter cell metabolism. Finally, we consider the latest findings from studies that describe how the mechanical properties of the ECM, primarily stiffness and confinement, alter cellular metabolism. We identify key areas of future investigation that may elucidate the molecular drivers that permit cells to respond to mechanical and chemical ECM cues by reprogramming their metabolism to better inform future diagnostics and therapeutics for disease states.