Wound-bed extracellular matrix components and host cells

The wound-bed extracellular matrix (ECM) components and host cells represent a complex, multi-component environment rather than a single molecular target (NCBI, 2014). The ECM provides a structural scaffold consisting of proteins like collagen, elastin, and fibronectin, which facilitate cell adhesion and signaling (Nature, 2022). Host cells within this environment, including fibroblasts, keratinocytes, and immune cells, interact with the ECM to orchestrate the phases of wound healing: inflammation, proliferation, and remodeling (StatPearls, 2023). In pathological states such as chronic diabetic ulcers, this environment is often characterized by excessive protease activity and impaired cellular response. Therapeutic strategies targeting this site often focus on modulating the biochemical balance to promote healing, using agents like growth factors, enzymatic debriders, or advanced dressings that mimic ECM functions. Because it encompasses a broad range of biological entities, it is considered a therapeutic site or microenvironment rather than a single discrete molecular target.

Other names

Wound microenvironmentGranulation tissueWound bedWound ECM

Therapeutic agents targeting the wound bed function by either debriding necrotic ECM (e.g., collagenase), providing exogenous growth factors to stimulate host cell proliferation (e.g., becaplermin), or acting as a physical scaffold to promote cell migration and endogenous ECM deposition (StatPearls, 2023).