Cellular Mechanics and Interactions

Cells are not passive occupants of their surroundings; they continuously sense and respond to the physical properties of the extracellular matrix — the fibrous scaffold that fills the space between cells — adjusting their shape, movement, and fate accordingly. The process by which cells convert mechanical signals from that matrix into biochemical responses, known as mechanotransduction, turns out to govern decisions as consequential as whether a stem cell becomes bone or fat, or whether a cancer cell acquires the ability to invade surrounding tissue. Researchers are now working to understand precisely how matrix stiffness is sensed at the molecular level through structures like the cytoskeleton, and how those signals are integrated over time to produce durable changes in cell behavior. Translating these insights into practice — particularly in designing synthetic matrices that reliably direct stem cell differentiation for tissue engineering — remains an active and largely unsolved challenge.

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Keywords

Extracellular MatrixCell MechanicsMechanotransductionStem CellsCytoskeletonTissue Engineering