title: Interaction of granulocyte-macrophage colony-stimulating factor and interleukin 3 in human long-term bone marrow culture.
abstract: Granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin 3 (IL-3), or a combination of both growth factors were added weekly to normal human long-term bone marrow cultures (LTBMC). GM-CSF had a greater effect on the total nonadherent cell population than the committed progenitor cells (granulocyte-macrophage colony-forming units, CFUgm), whereas IL-3 had the opposite effect and stimulated the expansion of greater numbers of CFUgm than GM-CSF. The combination of both factors had an additive effect on CFUgm. The longevity of the growth factor-treated cultures was not reduced. These data indicate that IL-3 stimulates an earlier progenitor cell population than GM-CSF and that a combination of the two factors should be more effective in vivo and could be applied to the expansion of bone marrow progenitor cells in culture before bone marrow transplantation.
authors.affiliation: Department of Cellular and Molecular Sciences, St. George's Hospital Medical School, London, England.
authors.forename: F M
authors.initials: FM
authors.lastname: Gibson
authors.forename: M
authors.initials: M
authors.lastname: Bagnara
authors.forename: E
authors.initials: E
authors.lastname: Ioannidou
authors.forename: E C
authors.initials: EC
authors.lastname: Gordon-Smith
mesh_terms: D001853:Bone Marrow / Q000187:drug effects; D001854:Bone Marrow Cells; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D004347:Drug Interactions; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology*; D006410:Hematopoiesis / Q000187:drug effects; D006412:Hematopoietic Stem Cells / Q000187:drug effects / Q000502:physiology; D006801:Humans; D007377:Interleukin-3 / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D007377:Interleukin-3; D016178:Granulocyte-Macrophage Colony-Stimulating Factor