Multiple cell types in the wound microenvironment via released growth factors and cytokines

The wound microenvironment is a complex, multi-cellular system involving the coordinated interaction of keratinocytes, fibroblasts, endothelial cells, and immune cells such as macrophages and neutrophils (StatPearls, 2023). These cells communicate through a dense network of released growth factors, including Platelet-Derived Growth Factor (PDGF), Transforming Growth Factor-beta (TGF-β), and Vascular Endothelial Growth Factor (VEGF), which regulate the sequential phases of hemostasis, inflammation, proliferation, and remodeling (NIH, 2022). In pathological conditions like diabetic ulcers, this environment becomes dysregulated, often characterized by persistent inflammation and deficient growth factor signaling (PubMed, PMID: 30247080). Therapeutic interventions like Becaplermin (recombinant human PDGF) aim to supplement these missing signals to jumpstart the healing process (PubChem). However, because this entry describes a collective physiological environment and a broad mechanism of action rather than a single molecular entity, it is not considered a discrete therapeutic target. Instead, it represents a systemic biological process targeted by various specialized drugs and biologics.

Other names

Wound microenvironmentWound healing milieuGranulation tissue signaling networkWound healing cascade

Modulation of the wound healing phases through exogenous supplementation of growth factors, inhibition of profibrotic cytokines, or enzymatic debridement to restore a pro-healing signaling environment (PubMed, PMID: 23991630).