The nature of the antigens recognized by γδ T cells and their potential recognition of major histocompatibility complex (MHC)-like molecules has remained unclear. Members of the CD1 family of lipid-presenting molecules are suggested ligands for Vδ1 T ...
The nature of the antigens recognized by γδ T cells and their potential recognition of major histocompatibility complex (MHC)-like molecules has remained unclear. Members of the CD1 family of lipid-presenting molecules are suggested ligands for Vδ1 TCR-expressing γδ T cells, the major γδ lymphocyte population in epithelial tissues. We crystallized a Vδ1 TCR in complex with CD1d and the self-lipid sulfatide, revealing the unusual recognition of CD1d by germline Vδ1 residues spanning all complementarity-determining region (CDR) loops, as well as sulfatide recognition separately encoded by nongermline CDR3δ residues. Binding and functional analysis showed that CD1d presenting self-lipids, including sulfatide, was widely recognized by gut Vδ1+ γδ T cells. These findings provide structural demonstration of MHC-like recognition of a self-lipid by γδ T cells and reveal the prevalence of lipid recognition by innate-like T cell populations.
Organizational Affiliation:
Committee on Immunology, University of Chicago, Chicago, IL 60637, USA; Department of Medicine, University of Chicago, Chicago, IL 60637, USA.,Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China; Department of Pathology, University of Chicago, Chicago, IL 60637, USA; Howard Hughes Medical Institute.,Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA.,Committee on Immunology, University of Chicago, Chicago, IL 60637, USA; Department of Pathology, University of Chicago, Chicago, IL 60637, USA; Howard Hughes Medical Institute.,Department of Pathology, University of Chicago, Chicago, IL 60637, USA; Howard Hughes Medical Institute.,Committee on Immunology, University of Chicago, Chicago, IL 60637, USA; Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL 60637, USA.,Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL 60637, USA.,Committee on Immunology, University of Chicago, Chicago, IL 60637, USA; Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL 60637, USA. Electronic address: ejadams@uchicago.edu.
(15Z)-N-((1S,2R,3E)-2-HYDROXY-1-{[(3-O-SULFO-BETA-D-GALACTOPYRANOSYL)OXY]METHYL}HEPTADEC-3-ENYL)TETRACOS-15-ENAMIDE (2S,3R,4E)-N-NERVONIC-1-[BETA-D-(3-SULFATE)-GALACTOPYRANOSYL]-2-AMINO-OCTADECENE-3-OL; CIS-TETRACOSENOYL SULFATIDE C48 H91 N O11 S ZZQWQNAZXFNSEP-JCOQVFCVSA-N
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