CD1d-Restricted and TCR-Mediated Activation of V α 14 NKT Cells by Glycosylceramides

Author:

Kawano Tetsu12,Cui Junqing12,Koezuka Yasuhiko12,Toura Isao12,Kaneko Yoshikatsu12,Motoki Kazuhiro12,Ueno Hitomi12,Nakagawa Ryusuke12,Sato Hiroshi12,Kondo Eisuke12,Koseki Haruhiko12,Taniguchi Masaru12

Affiliation:

1. T. Kawano, J. Cui, I. Toura, Y. Kaneko, H. Sato, E. Kondo, H. Koseki, M. Taniguchi, CREST (Core Research for Evolutional Science and Technology) Project, Japan Science and Technology Corporation (JST), and Division of Molecular Immunology, Center for Biomedical Science, School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260, Japan.

2. Y. Koezuka, K. Motoki, H. Ueno, R. Nakagawa, Pharmaceutical Research Laboratory, Kirin Brewery, 3 Miyahara, Takasaki, Gunma 370-12, Japan.

Abstract

Natural killer T (NKT) lymphocytes express an invariant T cell antigen receptor (TCR) encoded by the V α 14 and J α 281 gene segments. A glycosylceramide-containing α-anomeric sugar with a longer fatty acyl chain (C 26 ) and sphingosine base (C 18 ) was identified as a ligand for this TCR. Glycosylceramide-mediated proliferative responses of V α 14 NKT cells were abrogated by treatment with chloroquine–concanamycin A or by monoclonal antibodies against CD1d/V β 8, 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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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