3-O-sulfo-β-d-galactose moiety of endogenous sulfoglycolipids is a potential ligand for immunoglobulin-like receptor LMIR5

Vongsavanh Phongsisay, Ei'ichi Iizasa, Hiromitsu Hara, Sho Yamasaki

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Axonal Guillain-Barré syndrome (GBS) is an autoimmune neuropathy characterized by limb weakness and/or paralysis due to the presence of autoantibodies against brain glycolipids. The immune receptors that recognize these autoimmune targets have not been described. In this study, 12 C-type lectin and 10 immunoglobulin-like receptors were screened for their potential ligands from the brain glycolipids, which are the binding targets for GBS autoantibodies. These glycolipids were GM1, GM2, GD1a, GD1b, GQ1b, crude gangliosides, and 3-O-sulfo-β-d-galactosylceramide C24:1 (designated as C24:1). A direct interaction between ligand and receptor was examined using an ELISA-based binding assay. C-type lectin (CLEC5a, SIGNR3) and immunoglobulin-like receptors (TREM2, TREM3, LMIR2, LMIR5, LMIR7, LMIR8) interacted with C24:1. In addition, TREM3 did bind to GQ1b. LMIR5 interacted with GD1a, GQ1b, and crude gangliosides. Binding with highest affinity was observed for the LMIR5-C24:1 interaction, which was selected for further verification. C24:1 was found to induce MCP-1 production, but not proinflammatory cytokines, in basophils. C24:1-induced MCP-1 production was significantly reduced in DAP12-/- basophils. Importantly, LMIR5 ligation by C24:1 resulted in NFAT activation through DAP12 in LMIR5-expressing reporter cells. Structural analysis showed that LMIR5 recognized the 3-O-sulfo-β-d-galactose moiety of C24:1. The findings indicated that C24:1 is a potential ligand for DAP12-coupled LMIR5.

    Original languageEnglish
    Pages (from-to)595-599
    Number of pages5
    JournalMolecular Immunology
    Volume63
    Issue number2
    DOIs
    Publication statusPublished - Feb 1 2015

    Fingerprint

    Glycolipids
    Galactose
    C-Type Lectins
    Immunoglobulins
    Basophils
    Ligands
    Autoantibodies
    Galactosylceramides
    Brain
    Paralysis
    Ligation
    Extremities
    Enzyme-Linked Immunosorbent Assay
    Cytokines
    sulfoglycolipids
    GQ1b ganglioside

    All Science Journal Classification (ASJC) codes

    • Immunology
    • Molecular Biology

    Cite this

    3-O-sulfo-β-d-galactose moiety of endogenous sulfoglycolipids is a potential ligand for immunoglobulin-like receptor LMIR5. / Phongsisay, Vongsavanh; Iizasa, Ei'ichi; Hara, Hiromitsu; Yamasaki, Sho.

    In: Molecular Immunology, Vol. 63, No. 2, 01.02.2015, p. 595-599.

    Research output: Contribution to journalArticle

    Phongsisay, Vongsavanh ; Iizasa, Ei'ichi ; Hara, Hiromitsu ; Yamasaki, Sho. / 3-O-sulfo-β-d-galactose moiety of endogenous sulfoglycolipids is a potential ligand for immunoglobulin-like receptor LMIR5. In: Molecular Immunology. 2015 ; Vol. 63, No. 2. pp. 595-599.
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    abstract = "Axonal Guillain-Barr{\'e} syndrome (GBS) is an autoimmune neuropathy characterized by limb weakness and/or paralysis due to the presence of autoantibodies against brain glycolipids. The immune receptors that recognize these autoimmune targets have not been described. In this study, 12 C-type lectin and 10 immunoglobulin-like receptors were screened for their potential ligands from the brain glycolipids, which are the binding targets for GBS autoantibodies. These glycolipids were GM1, GM2, GD1a, GD1b, GQ1b, crude gangliosides, and 3-O-sulfo-β-d-galactosylceramide C24:1 (designated as C24:1). A direct interaction between ligand and receptor was examined using an ELISA-based binding assay. C-type lectin (CLEC5a, SIGNR3) and immunoglobulin-like receptors (TREM2, TREM3, LMIR2, LMIR5, LMIR7, LMIR8) interacted with C24:1. In addition, TREM3 did bind to GQ1b. LMIR5 interacted with GD1a, GQ1b, and crude gangliosides. Binding with highest affinity was observed for the LMIR5-C24:1 interaction, which was selected for further verification. C24:1 was found to induce MCP-1 production, but not proinflammatory cytokines, in basophils. C24:1-induced MCP-1 production was significantly reduced in DAP12-/- basophils. Importantly, LMIR5 ligation by C24:1 resulted in NFAT activation through DAP12 in LMIR5-expressing reporter cells. Structural analysis showed that LMIR5 recognized the 3-O-sulfo-β-d-galactose moiety of C24:1. The findings indicated that C24:1 is a potential ligand for DAP12-coupled LMIR5.",
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