title: Induction of macrophagic and granulocytic differentiation of murine bone marrow progenitor cells by 1,25-dihydroxyvitamin D3.
abstract: 1,25-Dihydroxyvitamin D3 (1,25(OH)2D3) was recently shown to promote maturation of 5-fluorouracil (5FU)-treated bone marrow cells by up-regulating macrophage-colony stimulating factor (M-CSF) receptors in the presence of interleukin 1 alpha (IL-1 alpha). In order to reveal how 1,25(OH)2D3 interacts with colony-stimulating factors and regulates the differentiation of bone marrow progenitor cell populations, in the present study, natural bone marrow cells were isolated from untreated mice and used in alpha-minimum essential medium supplemented with 20% heat-inactivated horse serum without added appropriate cytokines. Under the conditions, cells spontaneously differentiated gradually with days of culture, as assessed by expression of macrophage differentiation antigens such as Mac-1 (CD11b) and F4/80. Both M-CSF and granulocyte macrophage-colony stimulating factor (GM-CSF) induced only Mac-1 antigen expression. Simultaneous treatment with M-CSF and 1,25(OH)2D3 enhanced the M-CSF's effect on expression of both antigens, although 1,25(OH)2D3 per se has no effect on the expression for up to 11 days. In addition, successive treatment with 1,25(OH)2D3 and M-CSF or GM-CSF dramatically enhanced expression of both antigens or Mac-1 antigen, respectively. Similarly, both simultaneous and successive treatment with 1,25(OH)2D3 and M-CSF significantly enhanced phagocytic activity and H2O2 production, whereas successive treatment with 1,25(OH)2D3 and GM-CSF significantly enhanced only phagocytic activity.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Pharmacology, Niigata University School of Dentistry, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Orikasa
authors.forename: T
authors.initials: T
authors.lastname: Kawase
authors.forename: A
authors.initials: A
authors.lastname: Suzuki
mesh_terms: D000818:Animals; D000943:Antigens, Differentiation / Q000032:analysis; D001853:Bone Marrow / Q000187:drug effects*; D001854:Bone Marrow Cells; D002117:Calcitriol / Q000494:pharmacology*; D002454:Cell Differentiation / Q000187:drug effects; D002478:Cells, Cultured; D015870:Gene Expression / Q000187:drug effects; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D006098:Granulocytes / Q000166:cytology* / Q000187:drug effects; D016173:Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D016177:Macrophage-1 Antigen / Q000032:analysis; D008264:Macrophages / Q000166:cytology* / Q000187:drug effects / Q000276:immunology; D051379:Mice; D013234:Stem Cells / Q000166:cytology / Q000187:drug effects*; D015854:Up-Regulation
chemical_list: D000943:Antigens, Differentiation; D016177:Macrophage-1 Antigen; C036763:monocyte-macrophage differentiation antigen; D016173:Macrophage Colony-Stimulating Factor; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D002117:Calcitriol