title: Epidermal-growth-factor-dependent transformation by a human EGF receptor proto-oncogene.
abstract: The epidermal growth factor (EGF) receptor gene EGFR has been placed in a retrovirus vector to examine the growth properties of cells that experimentally overproduce a full-length EGF receptor. NIH 3T3 cells transfected with the viral DNA or infected with the corresponding rescued retrovirus developed a fully transformed phenotype in vitro that required both functional EGFR expression and the presence of EGF in the growth medium. Cells expressing 4 x 10(5) EGF receptors formed tumors in nude mice, while control cells did not. Therefore, the EGFR retrovirus, which had a titer on NIH 3T3 cells that was greater than 10(7) focus-forming units per milliliter, can efficiently transfer and express this gene, and increased numbers of EGF receptors can contribute to the transformed phenotype.
mesh_terms: D000818:Animals; D002471:Cell Transformation, Neoplastic / Q000139:chemically induced / Q000235:genetics*; D002478:Cells, Cultured; D004274:DNA, Recombinant; D004815:Epidermal Growth Factor / Q000494:pharmacology*; D066246:ErbB Receptors / Q000187:drug effects / Q000235:genetics*; D005347:Fibroblasts / Q000473:pathology; D005822:Genetic Vectors; D006251:Harvey murine sarcoma virus / Q000235:genetics; D006801:Humans; D008297:Male; D051379:Mice; D008819:Mice, Nude; D009374:Neoplasms, Experimental / Q000209:etiology; D000090063:Proto-Oncogene Mas; D011519:Proto-Oncogenes; D011994:Recombinant Proteins / Q000235:genetics
chemical_list: D004274:DNA, Recombinant; C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D011994:Recombinant Proteins; D004815:Epidermal Growth Factor; D066246:ErbB Receptors