Fibroblast signaling pathways

Fibroblast signaling pathways encompass a diverse set of intracellular and extracellular communication networks, including the TGF-beta, Wnt/beta-catenin, FGF, and PDGF cascades, which regulate fibroblast activation, proliferation, and extracellular matrix (ECM) production (Yang et al., 2021; Huang et al., 2019). In healthy tissues, these pathways are essential for wound healing and structural maintenance; however, their chronic or dysregulated activation is a hallmark of pathological fibrosis and the tumor microenvironment (Frontiers in Cell and Developmental Biology, 2025). Therapeutic strategies often target specific components of these pathways, such as receptors or ligands, to mitigate excessive ECM deposition in diseases like pulmonary fibrosis, cirrhosis, and systemic sclerosis (NIH, 2022). Drugs like nintedanib and pirfenidone are currently used to modulate these pathways, while novel agents targeting specific cytokines like IL-11 or growth factors like CTGF are under investigation (AHA Journals, 2022; DelveInsight, 2026). Due to the pleiotropic nature of these signaling networks, achieving tissue-specific modulation without interfering with normal physiological processes remains a significant therapeutic challenge.

Other names

Fibroblast activation pathwaysFibrogenic signaling cascadesStromal signaling pathways

Inhibition of receptor tyrosine kinases (FGFR, PDGFR, VEGFR), neutralization of profibrotic ligands (TGF-beta, CTGF), and modulation of downstream intracellular mediators (SMAD, beta-catenin).