Growth Factors

Growth Factors constitute a varied array of signalling molecules crucial for governing cell growth, proliferation, differentiation, and survival. They serve as pivotal regulators orchestrating essential cellular processes pivotal for tissue development, maintenance, and repair. These small proteins, typically secreted by various cell types, act as potent mediators of cellular responses to environmental cues, orchestrating tissue development, homeostasis, and repair processes. By binding to specific cell surface receptors, growth factors activate intracellular signalling pathways that promote cell cycle progression and DNA synthesis, leading to increased cell proliferation and tissue growth. Additionally, growth factors regulate cell differentiation, guiding the specialization of precursor cells into specific cell types with distinct functions and characteristics. Through the activation of lineage-specific signalling pathways, growth factors induce changes in gene expression patterns that drive cellular differentiation and maturation, contributing to the formation of complex tissues and organs during embryonic development and tissue regeneration. Moreover, growth factors play essential roles in tissue repair and wound healing processes by stimulating the migration, recruitment, and activation of various cell types involved in the healing response. For example, growth factors such as platelet-derived growth factor (PDGF) and transforming growth factor-beta (TGF-β) promote the proliferation and migration of fibroblasts, endothelial cells, and immune cells to the site of injury, facilitating tissue remodelling and scar formation