title: Role of growth factors in oncogenesis: growth factor-proto-oncogene pathways of mitogenesis.
abstract: Cellular genes which encode proteins involved in the response of cells to stimulation by growth factors may be potential oncogenes. The factors involved in the signal transmission from growth factor-receptor interaction to DNA synthesis constitute a cascade system which we call the 'growth factor-proto-oncogene pathway(s) of mitogenesis'. For each growth factor, all the responsive cells, regardless of cell types and tissue source, have specific growth factor receptors which are similar, if not identical, in molecular weight and biological activity. Thus, we believe that the growth factor-proto-oncogene pathway(s) functions in the same manner in all responsive cells. Platelet-derived growth factor (PDGF), epidermal growth factor (EGF), and brain-derived growth factor (BDGF) are major growth factors for connective tissue cells and do not share a common pathway in mitogenesis in responsive cells. The gene product of c-myc may be involved in the cellular response of cells stimulated by PDGF or FGF, but not directly in the signal transmission which leads to DNA synthesis.
mesh_terms: D000818:Animals; D002417:Cattle; D004247:DNA / Q000096:biosynthesis*; D004815:Epidermal Growth Factor / Q000494:pharmacology; D066246:ErbB Receptors; D006133:Growth Substances / Q000494:pharmacology*; D006801:Humans; D009369:Neoplasms / Q000209:etiology*; D010982:Platelet-Derived Growth Factor / Q000494:pharmacology; D000090063:Proto-Oncogene Mas; D011518:Proto-Oncogene Proteins / Q000502:physiology; D011519:Proto-Oncogenes; D011956:Receptors, Cell Surface / Q000032:analysis
chemical_list: D006133:Growth Substances; C000715470:MAS1 protein, human; D010982:Platelet-Derived Growth Factor; D000090063:Proto-Oncogene Mas; D011518:Proto-Oncogene Proteins; D011956:Receptors, Cell Surface; D004815:Epidermal Growth Factor; D004247:DNA; D066246:ErbB Receptors