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. 1997 Nov 28;278(5343):1626-9.
doi: 10.1126/science.278.5343.1626.

CD1d-restricted and TCR-mediated activation of valpha14 NKT cells by glycosylceramides

T Kawano  1 , J Cui, Y Koezuka, I Toura, Y Kaneko, K Motoki, H Ueno, R Nakagawa, H Sato, E Kondo, H Koseki, M Taniguchi
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CD1d-restricted and TCR-mediated activation of valpha14 NKT cells by glycosylceramides

T Kawano et al. Science. .

Abstract

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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