Denatured extracellular matrix proteins (Denatured ECM proteins)

Denatured extracellular matrix (ECM) proteins are the primary structural components of wound eschar, consisting of collagen, elastin, and fibronectin that have undergone conformational changes due to injury, ischemia, or necrosis (StatPearls, NBK507882). In chronic or severe wounds, these devitalized proteins form a physical barrier that prevents the formation of granulation tissue and inhibits re-epithelialization (StatPearls, NBK507882). This necrotic matrix also provides a substrate for microbial colonization, potentially leading to clinical infection and delayed healing (PMC4121390). Therapeutic strategies, specifically enzymatic debridement, utilize proteolytic enzymes to target and hydrolyze the peptide bonds within these denatured proteins (Santyl HCP). By selectively degrading the damaged ECM, these treatments liquefy the eschar, allowing for its removal and the exposure of a viable wound bed (NexoBrid FDA Label). This process is essential for promoting the natural healing cascade and improving patient outcomes in conditions such as pressure ulcers and deep burns (StatPearls, NBK507882). Unlike surgical debridement, enzymatic targeting allows for a more selective removal of non-viable tissue while minimizing trauma to the underlying healthy dermis (PubMed, 21248460). The degradation of these proteins also releases bioactive fragments that may further stimulate the inflammatory and proliferative phases of repair (PMC4121390).

Other names

Necrotic tissue proteinsDevitalized extracellular matrixEschar proteinsDenatured collagenWound debris

Enzymatic hydrolysis of peptide bonds in denatured structural proteins to facilitate the debridement of necrotic eschar (Santyl HCP, NexoBrid FDA Label).