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  • Title: Presentation of soluble antigens by mast cells: upregulation by interleukin-4 and granulocyte/macrophage colony-stimulating factor and downregulation by interferon-gamma.
    Author: Frandji P, Tkaczyk C, Oskéritzian C, Lapeyre J, Peronet R, David B, Guillet JG, Mécheri S.
    Journal: Cell Immunol; 1995 Jun; 163(1):37-46. PubMed ID: 7758129.
    Abstract:
    We recently showed that bone marrow-derived mast cells bore MHC class II molecules and could present antigens to specific T cell hybridomas. This article summarizes the effects of purified recombinant cytokines on the expression of MHC class II molecules by mast cells and on their antigen-presenting capacity. Since IL-3 is essential for mast cell growth, all the cytokines were analyzed in the presence of IL-3. IL-3 downregulated the production of Ia molecules, so that mast cells cultured in IL-3 alone had no antigen presenting ability. In contrast, IL-4 and IFN-gamma upregulated the production of MHC class II molecules, while GM-CSF had no effect. The antigen-presenting capacity of IL-4-treated mast cells was substantially enhanced by incubating these cells with GM-CSF for 2 days. GM-CSF enhanced antigen presentation only in combination with IL-4. The activation of mast cells was reversible and could not be repeated. Finally, incubation of IL-4- or IL-4/GM-CSF-treated mast cells with IFN-gamma led to almost complete inhibition of the antigen-presenting function. These findings provide new insights into the regulation of specific allergic responses.
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