title: Increased expression of trk proto-oncogene by gamma-interferon in human neuroblastoma cell lines.
abstract: Three human neuroblastoma cell lines were examined to determine the effect of recombinant gamma-interferon (IFN-gamma) treatment on the expression of trk proto-oncogene. Increased levels of trk proto-oncogene mRNA were observed in two neuroblastoma cell lines (KP-N-RT and KP-N-SI(FA)) after IFN-gamma treatment. The levels of trk mRNA increased with growth inhibition and morphological change in a time- and dose-dependent manner. The decreased level of N-myc mRNA after IFN-gamma treatment in KP-N-RT was inversely correlated with trk mRNA. Our results suggest that IFN-gamma can modulate the signal transduction of nerve growth factor in human neuroblastoma cells.
authors.affiliation: Department of Pediatrics, Kyoto Prefectural University of Medicine, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Shikata
authors.forename: T
authors.initials: T
authors.lastname: Sugimoto
authors.forename: H
authors.initials: H
authors.lastname: Hosoi
authors.forename: Y
authors.initials: Y
authors.lastname: Sotozono
authors.forename: T
authors.initials: T
authors.lastname: Shikata
authors.forename: T
authors.initials: T
authors.lastname: Sawada
authors.forename: L F
authors.initials: LF
authors.lastname: Parada
mesh_terms: D015152:Blotting, Northern; D004305:Dose-Response Relationship, Drug; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects*; D016259:Genes, myc / Q000187:drug effects; D006801:Humans; D007371:Interferon-gamma / Q000494:pharmacology*; D009414:Nerve Growth Factors / Q000378:metabolism; D009447:Neuroblastoma / Q000737:chemistry / Q000235:genetics*; D015513:Oncogene Proteins / Q000096:biosynthesis / Q000235:genetics*; D000090063:Proto-Oncogene Mas; D011519:Proto-Oncogenes / Q000187:drug effects*; D012333:RNA, Messenger / Q000378:metabolism; D012334:RNA, Neoplasm / Q000378:metabolism; D015398:Signal Transduction / Q000187:drug effects; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: C000715470:MAS1 protein, human; D009414:Nerve Growth Factors; D015513:Oncogene Proteins; D000090063:Proto-Oncogene Mas; D012333:RNA, Messenger; D012334:RNA, Neoplasm; C065400:oncogene protein trk; D007371:Interferon-gamma