title: Dose-dependent regulation of macrophage differentiation by mos mRNA in a human monocytic cell line.
abstract: The proto-oncogene c-mos was expressed during differentiation of the human monocytic cell line U937 into macrophages. To investigate a possible role of the mos oncogene, we introduced the v-mos gene under an inducible promoter, MT-I, into U937 cells. The v-mos transformed cells expressed mos mRNA at an amount proportional to the concentration of Zn2+ ions. The induction of the v-mos gene caused growth inhibition and macrophage differentiation in these cells. The differentiation of v-mos transformed monocytes into macrophages required continuous expression of the v-mos gene. The extent of expression of phenotypic characteristics of macrophages, such as phagocytosis, cell surface antigens and typical morphology, depends on the amount of mos mRNA present. We were therefore able to demonstrate that the expression of only one oncogene, mos, determines monocyte differentiation into macrophages.
authors.affiliation: Division of Cell Biology, School of Medicine, Fujita-Gakuen Health University, Aichi, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Kurata
authors.forename: H
authors.initials: H
authors.lastname: Akiyama
authors.forename: T
authors.initials: T
authors.lastname: Taniyama
authors.forename: T
authors.initials: T
authors.lastname: Marunouchi
mesh_terms: D000954:Antigens, Surface; D002454:Cell Differentiation; D002455:Cell Division; D002461:Cell Line, Transformed; D005786:Gene Expression Regulation; D006801:Humans; D008264:Macrophages / Q000166:cytology* / Q000276:immunology / Q000502:physiology; D009000:Monocytes / Q000166:cytology / Q000276:immunology / Q000502:physiology; D010587:Phagocytosis; D000090063:Proto-Oncogene Mas; D011519:Proto-Oncogenes; D012333:RNA, Messenger / Q000235:genetics* / Q000378:metabolism; D011961:Receptors, Fc / Q000378:metabolism
chemical_list: D000954:Antigens, Surface; C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D012333:RNA, Messenger; D011961:Receptors, Fc