Paracrine growth factor-mediated tissue repair

Paracrine growth factor-mediated tissue repair is a biological process where cells release signaling molecules to stimulate healing in adjacent tissues. This mechanism is fundamental to natural wound healing and is a primary driver of the therapeutic efficacy observed in mesenchymal stem cell therapies (Gnecchi et al., 2008). Key molecules involved in this process include Vascular Endothelial Growth Factor (VEGF), Fibroblast Growth Factor (FGF), and Platelet-Derived Growth Factor (PDGF), which act on neighboring receptor tyrosine kinases (Werner & Grose, 2003). These factors initiate intracellular signaling cascades, such as the MAPK and PI3K/Akt pathways, to promote cell proliferation, migration, and angiogenesis (Barrientos et al., 2008). Clinically, this process is targeted through the application of recombinant growth factors like Becaplermin for chronic wound management. However, "Paracrine growth factor-mediated tissue repair" is a descriptive physiological mechanism rather than a single, discrete molecular target. Therapeutic application is often limited by the rapid degradation of growth factors and the potential for off-target effects like excessive scarring or tumor promotion.

Other names

Paracrine signaling in wound healingGrowth factor-mediated regenerationParacrine repair mechanismMSC-mediated paracrine repair

Binding of secreted growth factors to cognate receptor tyrosine kinases (RTKs) on adjacent cells, initiating signal transduction pathways such as MAPK/ERK and PI3K/Akt to promote cellular regeneration.