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  • Title: Production of interleukin 6 and its relation to the macrophage differentiation of mouse myeloid leukemia cells (M1) treated with differentiation-inducing factor and 1 alpha,25-dihydroxyvitamin D3.
    Author: Miyaura C, Jin CH, Yamaguchi Y, Tomida M, Hozumi M, Matsuda T, Hirano T, Kishimoto T, Suda T.
    Journal: Biochem Biophys Res Commun; 1989 Feb 15; 158(3):660-6. PubMed ID: 2784054.
    Abstract:
    We have studied the production of interleukin 6 (IL-6) and its relation to the macrophage differentiation in murine myeloid leukemia cells (M1). As has been reported, differentiation-inducing factor (D-factor), 1 alpha, 25-dihydroxyvitamin D3 [1 alpha, 25(OH)2D3], and recombinant IL-6 similarly induced differentiation of M1 cells into macrophages. The three compounds also induced mRNA expression of IL-6 in M1 cells. M1 cells treated with D-factor or 1 alpha, 25(OH)2D3 produced biologically active IL-6, but the amounts of IL-6 secreted into culture media did not appear to be enough to induce differentiation of M1 cells. Furthermore, simultaneous addition of anti-IL-6 antibody did not suppress the differentiation of M1 cells induced by D-factor or 1 alpha, 25(OH)2D3. These results show that IL-6 production is an essential property associated with the macrophage differentiation of M1 cells, but it may not be responsible for the D-factor- and 1 alpha, 25(OH)2D3-induced differentiation.
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