Mechanobiology

Mechanobiology investigates how mechanical forces and material properties of the cellular environment govern biological processes from the molecular to the tissue scale. Cells sense tension, compression and shear through specialised receptors—integrins at cell–matrix adhesions and cadherins at cell–cell contacts—which link via the cytoskeleton to intracellular signalling pathways. These mechanotransduction events influence gene expression, cytoskeletal remodelling and biochemical feedback loops that direct development, tissue homeostasis, regeneration and disease progression. Mechanical cues regulate stem cell fate, guide collective cell migration, shape organ architecture during morphogenesis and control fibroblast-to-myofibroblast transitions in wound healing and fibrosis. At the tissue level, spatiotemporal variations in stiffness, fluid flow and tissue tension orchestrate growth, remodelling and organisation of extracellular matrix. Advances in force-sensing probes, imaging and computational modelling have begun to bridge scales, revealing how conformational changes in matrix proteins, condensate formation and cytoskeletal dynamics convert physical stimuli into biological function. A comprehensive understanding of these processes promises new therapeutic strategies in regenerative medicine, cancer and cardiovascular disease.

Research from Nature Portfolio

Communications Biology (2023) synthesised how dynamic, biochemical and biomechanical signals converge to steer cytoskeletal remodelling and emergent lineage commitment in stem cells. High-resolution force spectroscopy mapped thresholds for focal adhesion maturation and stress-fibre assembly, while spatiotemporal imaging revealed how YAP/TAZ nuclear translocation and actin architecture establish robust mechanoadaptive responses across length scales. This work provides a predictive framework for engineering microenvironments in tissue neogenesis.

Nature Communications (2023) identified VGLL3 as a mechanosensitive cofactor that translocates to the nucleus of cardiac myofibroblasts upon increasing substrate stiffness. There it undergoes liquid–liquid phase separation, associates with nuclear condensates to suppress miR-29b and thereby drives collagen mRNA accumulation. Loss of VGLL3 markedly attenuated post-infarction fibrosis, unveiling a mechanoregulated epigenetic pathway in tissue remodelling.

Communications Biology (2023) combined multiscale computational modelling and experiments to quantify how platelet filopodia generate pulling forces on fibrin networks during clot contraction. Sequential extension–retraction cycles of filopodia and integrin adhesion were shown to densify and reshape the matrix. The kinetics and force–stiffness relationships elucidated here inform both haemostatic regulation and thrombotic disease mechanisms.

Research from all publishers

Advanced Science (2023) introduced biomimetic fibrillar fibronectin matrices that accelerate fibroblast adhesion, spreading and migration via crosstalk between α5β1 integrin and syndecan-4. These matrices recapitulate in vivo fibronectin architecture and stiffness, guiding short- and long-term decisions in cell motility and proliferation, with implications for tissue engineering scaffolds.

Science Advances (2023) employed de novo-grown microtissues to reveal a mechanoregulated transition from growth to maturation driven by changes in fibronectin fibril tension. A switch from α5β1 to α2β1 integrin engagement, tenascin-C induction and matrix remodeling enzymes coordinated a myofibroblast-to-fibroblast conversion, offering targets to control fibrotic pathologies.

Cell Communication and Signalling (2023) demonstrated that cyclic tensile stress of moderate amplitude promotes osteogenic differentiation of mesenchymal stem cells via an integrin αVβ3–actin axis. Integrin activation induced stress-fibre assembly and YAP nuclear translocation, upregulating osteogenic genes, while disruption of the cytoskeleton or YAP attenuated this effect, emphasising the central role of cytoskeletal integrity in mechanochemical lineage control.

Mechanobiology publication trend

The graph below shows the total number of articles in mechanobiology across all publications each year (not limited to Nature Index journals).

Technical terms

Mechanotransduction: Conversion of mechanical stimuli into intracellular biochemical signals that regulate cell behaviour and fate.

Extracellular matrix (ECM): Network of proteins and polysaccharides surrounding cells that provides structural support and mechanical cues.

Integrin: Transmembrane receptor linking ECM ligands to the actin cytoskeleton, serving as a hub for force transmission and signalling.

Focal adhesion: Multiprotein complex that anchors actin filaments to the cell membrane and mediates mechanosensing at cell–matrix interfaces.

Liquid–liquid phase separation: Process by which proteins condense into membrane-less droplets, compartmentalising biochemical reactions in response to mechanical or chemical cues.

Filopodia: Thin, dynamic actin-rich protrusions that probe the extracellular environment and generate pulling forces during adhesion and migration.

YAP/TAZ: Transcriptional co-activators that shuttle to the nucleus under mechanical stimulation to regulate gene expression linked to growth and differentiation.

References

1. Biomechanical, biophysical and biochemical modulators of cytoskeletal remodelling and emergent stem cell lineage commitment. Communications Biology (2023).
2. VGLL3 is a mechanosensitive protein that promotes cardiac fibrosis through liquid–liquid phase separation. Nature Communications (2023).
3. Combined computational modeling and experimental study of the biomechanical mechanisms of platelet-driven contraction of fibrin clots. Communications Biology (2023).
4. Engineered Biomimetic Fibrillar Fibronectin Matrices Regulate Cell Adhesion Initiation, Migration, and Proliferation via α5β1 Integrin and Syndecan‐4 Crosstalk. Advanced Science (2023).
5. How the mechanobiology orchestrates the iterative and reciprocal ECM-cell cross-talk that drives microtissue growth. Science Advances (2023).
6. Regulation of the integrin αVβ3- actin filaments axis in early osteogenic differentiation of human mesenchymal stem cells under cyclic tensile stress. Cell Communication and Signaling (2023).