Extracellular matrix components and tissue surface (ECM)

The extracellular matrix (ECM) and tissue surfaces constitute a complex, non-cellular network of macromolecules, including proteins like collagen and elastin, as well as glycosaminoglycans and proteoglycans, that provide essential structural and biochemical support to tissues [1, 4]. This target category is not a single molecular entity but rather a functional environment that regulates cell adhesion, migration, and signaling through interactions with cell-surface receptors like integrins [4]. In various disease states, the ECM undergoes significant remodeling; for instance, excessive deposition leads to fibrosis, while its degradation by matrix metalloproteinases (MMPs) facilitates cancer cell invasion and metastasis [4]. Therapeutic interventions targeting the ECM include enzymes like collagenase, which degrades specific collagen fibers to treat conditions such as Dupuytren's contracture, and hyaluronidase, which increases tissue permeability for drug absorption [2, 5]. Additionally, agents like sucralfate target the tissue surface by binding to the proteinaceous exudate of ulcers, creating a physical barrier against further damage [3]. Understanding the ECM is crucial for developing regenerative medicines and targeted drug delivery systems that exploit the unique physical properties of the tissue surface [1].

Other names

Extracellular matrixIntercellular matrixTissue surfaceECM components

Drugs targeting this category typically act by enzymatically degrading specific matrix proteins (e.g., collagenase), binding to exposed surfaces to form protective barriers (e.g., sucralfate), or modulating the physical properties and permeability of the extracellular environment (e.g., hyaluronidase) [2, 3, 5].