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  • Title: The synthetic analogue of mycoplasmal lipoprotein FSL-1 induces dendritic cell maturation through Toll-like receptor 2.
    Author: Kiura K, Kataoka H, Nakata T, Into T, Yasuda M, Akira S, Inoue N, Shibata K.
    Journal: FEMS Immunol Med Microbiol; 2006 Feb; 46(1):78-84. PubMed ID: 16420600.
    Abstract:
    Granulocyte-macrophage colony-stimulating factor-differentiated bone marrow-derived dendritic cells were stimulated with the synthetic lipopeptide S-(2,3-bispalmitoyloxypropyl)-CGDPKHSPKSF (FSL-1) or the Escherichia coli lipopolysaccharide. FSL-1 induced the production of TNF-alpha and IL-12 by C57BL/6-derived bone marrow-derived dendritic cells but not by bone marrow-derived dendritic cells from Toll-like receptor 2-deficient (TLR2(-/-)) mice. Lipopolysaccharide induced the production of TNF-alpha and IL-12 by bone marrow-derived dendritic cells derived from either type of mice. FSL-1 did not induce production of IL-10 by bone marrow-derived dendritic cells from either type of mice, whereas lipopolysaccharide induced small amounts of IL-10 by bone marrow-derived dendritic cells from both types of mice. The upregulation by FSL-1 of the expression of CD80, CD86 and the MHC class II molecule IA(b) was dose- and time-dependent on the surfaces of C57BL/6-derived bone marrow-derived dendritic cells but not on the surface of TLR2(-/-)-derived bone marrow-derived dendritic cells. Lipopolysaccharide upregulated the expression of these molecules on the surfaces of bone marrow-derived dendritic cells from both types of mice. The expression of CD11c on the surfaces of C57BL/6-derived bone marrow-derived dendritic cells was upregulated by stimulation with both FSL-1 and lipopolysaccharide up to 12 h; thereafter, the expression was downregulated. The results suggest that FSL-1 can accelerate maturation of bone marrow-derived dendritic cells and this FSL-1 activity is mediated by TLR2.
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