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  • Title: An in vitro model for the production of committed haemopoietic progenitor cells stimulated by exposure to single and combined recombinant growth factors.
    Author: Gordon MY, Clarke D, Healy LE.
    Journal: Bone Marrow Transplant; 1989 Jul; 4(4):353-8. PubMed ID: 2673454.
    Abstract:
    A plastic-adherent mononuclear cell population in human bone marrow produces non-plastic-adherent nucleated cells in liquid cultures. These cells can be harvested from the culture medium and a proportion of them can be identified as granulocyte-macrophage colony-forming cells (GM-CFC) by plating them in semi-solid cultures with granulocyte-macrophage colony-stimulating factor (GM-CSF). The generation of GM-CFC from their plastic-adherent precursors can be amplified considerably by adding 5637 conditioned medium (CM) to the liquid phase of the adherent cell cultures. This effect of 5637 CM cannot be reproduced by recombinant (r) GM-CSF or interleukins (ILs) 1, 3 or 6 if they are added singly to the culture medium. In contrast, the combination of GM-CSF + IL-1 equalled or surpassed the activity of 5637 CM. The combinations of rGM-CSF + rIL-3 and rGM-CSF + IL-6 also mimicked the activity of 5637 CM but less effectively than GM-CSF + IL-1.
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