Extracellular matrix components in skin wounds (ECM)

The extracellular matrix (ECM) in skin wounds is a complex, dynamic network of proteins and polysaccharides that provides the essential structural and functional scaffold for tissue repair. It is composed of various molecules, including structural proteins like collagen and elastin, adhesive glycoproteins such as fibronectin and laminin, and proteoglycans like hyaluronan and decorin (1.1.1, 1.3.1). Beyond providing physical support, the ECM acts as a reservoir for growth factors and cytokines, regulating critical cellular processes such as adhesion, migration, and proliferation through interactions with cell-surface receptors like integrins (1.3.2, 1.3.4). In chronic wounds, the balance between ECM synthesis and degradation is often disrupted, typically involving excessive proteolysis by matrix metalloproteinases (MMPs) which hinders healing (1.1.4, 1.2.1). Conversely, abnormal ECM accumulation can lead to pathological fibrosis, resulting in hypertrophic scars or keloids (1.4.4). Therapeutic interventions targeting the ECM include enzymatic debriding agents like collagenase, bioactive dressings that provide a temporary scaffold, and agents like copper peptides that stimulate new matrix synthesis (1.3.1, 1.4.1, 1.4.2).

Other names

Skin extracellular matrixDermal matrixWound matrixProvisional matrixCutaneous ECM

Provides a physical scaffold for cell migration and tissue ingrowth; sequesters and releases growth factors to modulate cellular signaling; enzymatic degradation of necrotic or damaged matrix components; induction of intracellular signaling via integrin-receptor binding.