Growth factor signaling and collagen synthesis

Growth factor signaling and collagen synthesis is a coordinated biological process essential for maintaining tissue architecture and facilitating repair. It involves the activation of cell surface receptors by ligands such as Transforming Growth Factor-beta (TGF-beta), Platelet-Derived Growth Factor (PDGF), and Fibroblast Growth Factor (FGF), which trigger intracellular signaling cascades like the SMAD or MAPK pathways [1]. These signals culminate in the nucleus, where they drive the expression of collagen genes, leading to the production and secretion of collagen fibers into the extracellular matrix [2]. While critical for normal development and wound closure, dysregulation of this axis is a hallmark of fibrotic disorders, where excessive collagen accumulation leads to organ dysfunction [1]. In the tumor microenvironment, this process can be co-opted to support cancer progression and immune evasion [3]. Therapeutic strategies often focus on inhibiting specific growth factor receptors or their downstream effectors to prevent pathological fibrosis [4]. Drugs like nintedanib and pirfenidone are currently used to modulate these pathways in conditions such as idiopathic pulmonary fibrosis [4]. Monitoring this process in a clinical setting often involves measuring pro-collagen peptides or specific growth factor levels in the serum [2]. Citations: [1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3431431/ [2] https://www.ncbi.nlm.nih.gov/books/NBK507709/ [3] https://pubmed.ncbi.nlm.nih.gov/28127054/ [4] https://pubchem.ncbi.nlm.nih.gov/compound/Nintedanib

Other names

TGF-beta signaling pathwayExtracellular matrix remodelingFibrogenesisGrowth factor-mediated collagen production

Inhibition of growth factor receptors (e.g., TGFBR, PDGFR, FGFR) or downstream signaling mediators (e.g., SMAD proteins) to suppress the transcriptional activation of collagen genes and reduce extracellular matrix deposition.