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doi: 10.1038/jid.2013.160
pmid: 23657464
Basophils act as initiator cells for the development of IgE-mediated chronic allergic inflammation (IgE-CAI). However, detailed mechanisms of initial recruitment of basophils into the skin have yet to be clarified. Selectins mediate leukocyte capture and rolling on the vascular endothelium for extravasation. Counter-receptor activity of selectins is regulated by α(1, 3) fucosyltransferases (FTs) IV and VII. To clarify the contribution of selectin ligands regulated by FTs for initial basophil recruitment, IgE-CAI was induced in mice deficient in FT-IV and/or FT-VII genes. Although FT-IV(-/-) and FT-VII(-/-) mice exhibited comparable skin responses to wild-type mice, the FT-IV(-/-)/FT-VII(-/-) mice showed significantly impaired inflammation. Although the transfer of basophils to FcRγ(-/-) mice induced IgE-CAI, this induction was completely absent when basophils from FT-IV(-/-)/FT-VII(-/-) mice were transferred. L-selectin, but not P- and E-selectin, blocking Abs inhibited skin inflammation in vivo. P-selectin glycoprotein-1 (PSGL-1) antibody also ameliorated skin inflammation, and basophils were bound to L-selectin in a PSGL-1-dependent manner, which was regulated by FT-IV/VII. Functional PSGL-1 generated by basophil FT-IV/VII and its subsequent binding to L-selectin could be one of the essential steps required for initial basophil recruitment and the development of IgE-CAI in mice.
Mice, Nude, Bone Marrow Cells, Dermatology, Biochemistry, Mice, Cell Movement, Animals, Leukocyte Rolling, L-Selectin, Molecular Biology, Cells, Cultured, Skin, Mice, Knockout, Mice, Inbred BALB C, Cell Biology, Immunoglobulin E, Fucosyltransferases, Basophils, Mice, Inbred C57BL, P-Selectin, Chronic Disease, Dermatitis, Allergic Contact, Endothelium, Vascular, E-Selectin
Mice, Nude, Bone Marrow Cells, Dermatology, Biochemistry, Mice, Cell Movement, Animals, Leukocyte Rolling, L-Selectin, Molecular Biology, Cells, Cultured, Skin, Mice, Knockout, Mice, Inbred BALB C, Cell Biology, Immunoglobulin E, Fucosyltransferases, Basophils, Mice, Inbred C57BL, P-Selectin, Chronic Disease, Dermatitis, Allergic Contact, Endothelium, Vascular, E-Selectin
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