Cell Adhesion Mechanisms in Tissue Engineering
Summary
Cell adhesion lies at the heart of tissue engineering, orchestrating how cells attach, communicate and organise into functional constructs. In engineered tissues, adhesion molecules such as integrins bind to ligands within the extracellular matrix (ECM) or to synthetic motifs presented by biomaterial scaffolds. These interactions govern cell spreading, migration, survival and differentiation by triggering intracellular signalling cascades and by organising focal adhesion complexes. The spatial patterning and mechanical properties of the substrate alter receptor clustering and cytoskeletal tension, influencing mechanotransduction pathways that regulate gene expression. Synthetic scaffolds model aspects of native ECM by incorporating adhesive peptide sequences—often the RGD motif derived from fibronectin—into polymers or hydrogels. By tuning ligand density, stiffness and topography, researchers direct stem cell fate, encourage vascular ingrowth and promote tissue integration. Advances in multi-receptor targeting combine peptides, glycosaminoglycans and growth factors to emulate the complexity of native niches. As the field moves towards clinical translation, understanding and controlling cell adhesion at molecular and material levels remain essential for reliable manufacture of engineered tissues and implants.
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Cell Adhesion Mechanisms in Tissue Engineering publication trend
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Technical terms
Extracellular matrix (ECM): A complex network of proteins and glycoproteins that provides structural support and biochemical signals to cells.
Integrins: Transmembrane receptors that bind ECM ligands and mediate cell–substrate adhesion and signal transduction.
Focal adhesion: A specialised multiprotein assembly linking integrins to the actin cytoskeleton, essential for mechanotransduction.
Biomaterial scaffold: A synthetic or natural framework designed to support cell attachment, growth and tissue development.
RGD motif: A tri-amino-acid sequence (arginine–glycine–aspartate) found in ECM proteins that is recognised by several integrin receptors.
References
- A simple method for poly-D-lysine coating to enhance adhesion and maturation of primary cortical neuron cultures in vitro. Frontiers in Cellular Neuroscience (2023).
- Mixed Peptide-Conjugated Chitosan Matrices as Multi-Receptor Targeted Cell-Adhesive Scaffolds. International Journal of Molecular Sciences (2018).
- Improvement of wound healing by the development of ECM-inspired biomaterial coatings and controlled protein release. Biological Chemistry (2021).
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