Wound Proteases

Wound environment proteases are a diverse group of enzymes, primarily consisting of matrix metalloproteinases (MMPs) and serine proteases like neutrophil elastase, that are essential for normal wound healing processes such as debridement and tissue remodeling [1][2]. In healthy tissue, these proteases are strictly regulated by endogenous inhibitors like tissue inhibitors of metalloproteinases (TIMPs); however, in chronic wounds, this balance is disrupted, leading to pathologically high levels of protease activity [2][3]. This excess causes the degradation of the extracellular matrix, growth factors, and their receptors, effectively stalling the wound in a persistent inflammatory state and preventing closure [3][4]. Therapeutic interventions, such as protease-modulating dressings (e.g., those containing collagen or sucrose octasulfate), aim to sequester or inhibit these enzymes to restore a favorable biochemical environment for healing [5][6]. Monitoring protease levels, particularly MMP-9 and elastase, serves as a valuable biomarker for assessing wound chronicity and the efficacy of treatment [1][7].

Other names

Wound environment proteasesChronic wound proteasesWound-associated proteasesMatrix metalloproteinases and serine proteases in wounds

Protease modulation through sequestration of enzymes within the dressing matrix, competitive inhibition of the catalytic site, or chelation of essential metal ions (e.g., zinc) required for enzyme activity, thereby restoring the balance between tissue degradation and synthesis.