Extracellular Matrix Proteins in Cell Adhesion and Neurite Outgrowth

The extracellular matrix (ECM) is a complex network of fibrous proteins and glycoproteins that provides structural support and biochemical cues to cells. Key ECM proteins such as collagen, fibronectin and laminin interact with cell‐surface receptors—primarily integrins—to form specialised adhesion complexes. These contacts not only anchor cells but also transduce mechanical and chemical signals that regulate cytoskeletal dynamics, gene expression and cell fate. In the nervous system, ECM components guide neurite outgrowth by presenting adhesive substrates and growth‐promoting motifs. Laminin, for example, contains discrete domains that stimulate axonal extension and branching, while fibronectin and specific collagen isoforms modulate substrate stiffness and ligand density to influence growth cone motility. Through a coordinated balance of adhesion and de‐adhesion, ECM proteins direct neuronal pathfinding during development and contribute to repair after injury. Understanding these processes underpins strategies in neural tissue engineering, regenerative medicine and the design of biomimetic materials.

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Extracellular Matrix Proteins in Cell Adhesion and Neurite Outgrowth publication trend

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Technical terms

Extracellular matrix (ECM): A network of proteins and polysaccharides that provides structural support and signalling cues to cells.

Integrin: A transmembrane receptor that binds ECM proteins and links them to the cytoskeleton, mediating adhesion and signal transduction.

Laminin: A multidomain glycoprotein in basement membranes that promotes cell adhesion, migration and neurite outgrowth.

Fibronectin: An adhesive glycoprotein that binds integrins and collagen, modulating cell attachment and migration.

Collagen: A family of fibrous proteins forming tensile networks in the ECM, affecting substrate stiffness and cell behaviour.

Neurite outgrowth: The process by which developing or regenerating neurons extend axons or dendrites guided by extracellular cues.

References

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