title: Macrophage colony formation supported by purified CSF-1 and/or interleukin 3 in serum-free culture: evidence for hierarchical difference in macrophage colony-forming cells.
abstract: Using a serum-free culture system, we examined murine macrophage colony formation from bone marrow cells cultured in the presence of purified CSF-1, interleukin 3 (IL 3) or a combination of the two factors. CSF-1 supported macrophage and neutrophil-macrophage colony formation, whereas IL-3 supported the formation of various types of single lineage and multilineage colonies. CSF-1 supported more macrophage colonies from bone marrow cells of normal mice than IL 3, whereas in cultures of bone marrow cells of 5-fluorouracil-treated mice, IL 3 supported more macrophage colonies. A combination of CSF-1 and IL 3 resulted in granulocyte-macrophage (GM) colony formation that was equal to or greater than the sum of GM colony formation supported by the factors individually. The combination of CSF-1 and IL 3 resulted in significant increases in the size of both macrophage and neutrophil-macrophage colonies. Similar increases in colony size were observed when CSF-1 was added to cultures five days after incubation of marrow cells with IL 3. These data support the concept that some of the macrophage colony-forming cells that respond to IL 3 are more primitive than those that are sensitive to CSF-1.
authors.forename: K
authors.initials: K
authors.lastname: Koike
authors.forename: E R
authors.initials: ER
authors.lastname: Stanley
authors.forename: J N
authors.initials: JN
authors.lastname: Ihle
authors.forename: M
authors.initials: M
authors.lastname: Ogawa
mesh_terms: D000818:Animals; D001790:Blood Physiological Phenomena; D001854:Bone Marrow Cells; D002478:Cells, Cultured; D003114:Colony-Forming Units Assay; D003115:Colony-Stimulating Factors / Q000494:pharmacology*; D003470:Culture Media; D004338:Drug Combinations; D005260:Female; D005472:Fluorouracil / Q000494:pharmacology; D006410:Hematopoiesis / Q000187:drug effects; D006412:Hematopoietic Stem Cells / Q000145:classification / Q000166:cytology* / Q000187:drug effects; D007377:Interleukin-3; D008222:Lymphokines / Q000494:pharmacology*; D008264:Macrophages / Q000145:classification / Q000166:cytology* / Q000187:drug effects; D051379:Mice; D008815:Mice, Inbred Strains; D013997:Time Factors
chemical_list: D003115:Colony-Stimulating Factors; D003470:Culture Media; D004338:Drug Combinations; D007377:Interleukin-3; D008222:Lymphokines; D005472:Fluorouracil