CD1d-Restricted and TCR-Mediated Activation of Vα14 NKT Cells by Glycosylceramides
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251
摘要：
Natural killer T (NKT) lymphocytes express an invariant T cell antigen receptor (TCR) encoded by the Valpha14 and Jalpha281 gene segments. A glycosylceramide-containing alpha-anomeric sugar with a longer fatty acyl chain (C26) and sphingosine base (C18) was identified as a ligand for this TCR. Glycosylceramide-mediated proliferative responses of Valpha14 NKT cells were abrogated by treatment with chloroquine-concanamycin A or by monoclonal antibodies against CD1d/Vbeta8, CD40/CD40L, or B7/CTLA-4/CD28, but not by interference with the function of a transporter-associated protein. Thus, this lymphocyte shares distinct recognition systems with either T or NK cells.
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关键词：
Animals Mice, Inbred C57BL Mice T-Lymphocyte Subsets Cells, Cultured Cerebrosides Galactosylceramides Glucosylceramides Receptors, Antigen, T-Cell, alpha-beta Ligands
DOI：
10.1126/science.278.5343.1626
被引量：
年份：
1997
Taylor & Francis
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