Multiple extracellular protein substrates

Multiple extracellular protein substrates is a collective term used in pharmacological databases to describe the various proteins within the extracellular matrix (ECM) that are targeted by therapeutic enzymes. This group primarily includes structural proteins such as Type I and Type III collagen, which are essential for maintaining the mechanical integrity of connective tissues (DrugBank Online, 2024). In clinical practice, these substrates are targeted by enzymes like collagenase clostridium histolyticum to treat fibroproliferative disorders such as Dupuytren's contracture and Peyronie's disease by selectively breaking down excessive collagen deposits (FDA, 2021). Additionally, enzymes like hyaluronidase target the extracellular environment to facilitate the diffusion and absorption of other injected medications (StatPearls, 2023). While these substrates are vital for tissue architecture, their pathological accumulation can lead to significant physical impairment, making their controlled degradation a key therapeutic goal. However, because this designation covers a broad class of proteins rather than a single molecular entity, it is considered a non-specific target classification (PubMed, 2022). Therapeutic interventions must be precisely localized to avoid the degradation of healthy structural tissues, such as tendons or ligaments, which could lead to serious adverse events (NCBI, 2023).

Other names

Extracellular matrix proteinsECM proteinsCollagenous substratesInterstitial proteins

Enzymatic hydrolysis and degradation of structural proteins within the extracellular matrix to dissolve pathological fibrous tissue or facilitate drug dispersion.