Extracellular Matrix Mechanobiology and Cell Dynamics

The extracellular matrix (ECM) is a dynamic network of proteins and polysaccharides that provides structural support, biochemical signalling and mechanical cues to cells. Mechanobiology examines how physical forces and changes in the mechanical properties of the ECM influence cellular behaviour, including adhesion, migration, proliferation and differentiation. Cells both sense and remodel their matrix through specialised transmembrane receptors and cytoskeletal machinery, establishing a reciprocal feedback loop in which forces generated by cell contraction reorganise ECM architecture, and ECM tension or stiffness modulates intracellular signalling pathways. This iterative cross-talk underlies tissue morphogenesis, repair and homeostasis, and its dysregulation contributes to fibrosis, cancer progression and degenerative diseases. Advances in imaging, material engineering and force-sensing biosensors have revealed that matrix proteins such as fibronectin and collagen adopt force-induced conformations that expose cryptic binding sites, directing integrin engagement and downstream pathways. Understanding these interactions at molecular, cellular and tissue scales is essential for developing therapeutics and biomaterials that harness mechanobiological principles for regenerative medicine and disease intervention.

Research from Nature Portfolio

Recent studies have employed force-sensitive probes and quantitative imaging to demonstrate that collagen I fibres preferentially assemble onto relaxed fibronectin fibrils, whereas stretched fibronectin regions resist collagen deposition. This reciprocal mechano-regulation ensures hierarchical ECM organisation and stabilises matrix architecture against excessive cellular traction. In parallel, investigations with human mesenchymal stem cells have shown that cells actively assemble and tension fibronectin fibrils within hours of adhesion. Increased stretching of these fibrils on stiffer substrates amplifies osteogenic differentiation via integrin-dependent pathways, linking substrate mechanics to lineage specification. These findings highlight the role of fibronectin mechanobiology as a checkpoint in stem cell fate and reveal how cells exploit ECM deformation to translate mechanical inputs into biochemical responses.

Extracellular Matrix Mechanobiology and Cell Dynamics publication trend

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

Technical terms

Extracellular matrix (ECM): A complex network of proteins and polysaccharides surrounding cells that provides structural support and biochemical cues.

Mechanobiology: The study of how mechanical forces and properties of the cellular environment influence biological processes.

Integrin: A family of transmembrane receptors that mediate cell adhesion to the ECM and transduce mechanical signals.

Fibronectin: A high-molecular-weight glycoprotein in the ECM that assembles into fibrils and binds to integrins.

Mechanotransduction: The process by which cells convert mechanical stimuli into biochemical signals.

Myofibroblast: A contractile cell phenotype involved in wound healing and tissue remodelling, characterised by stress fibre formation.

Fibrillogenesis: The assembly of soluble ECM proteins into organised fibrillar structures.

References

1. Engineered Biomimetic Fibrillar Fibronectin Matrices Regulate Cell Adhesion Initiation, Migration, and Proliferation via α5β1 Integrin and Syndecan‐4 Crosstalk. Advanced Science (2023).
2. How the mechanobiology orchestrates the iterative and reciprocal ECM-cell cross-talk that drives microtissue growth. Science Advances (2023).
3. Mechanical forces regulate the interactions of fibronectin and collagen I in extracellular matrix. Nature Communications (2015).
4. Force-Induced Unfolding of Fibronectin in the Extracellular Matrix of Living Cells. PLOS Biology (2007).
5. Mesenchymal Stem Cells Exploit Extracellular Matrix as Mechanotransducer. Scientific Reports (2013).