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Trends Immunol. 2011 Aug;32(8):364-72. doi: 10.1016/j.it.2011.06.001. Epub 2011 Jul 13.

Unifying concepts of MHC-dependent natural killer cell education.

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  • 1Immunology Graduate Program, Division of Biology and Biomedical Sciences, Washington University School of Medicine, Campus Box 8045, 660 South Euclid Avenue, St. Louis, MO 63110, USA.

Abstract

Natural killer (NK) cells, like B and T lymphocytes, are potent effector cells that are crucial for immunity to tumors and infections. These effector responses must be controlled to avoid inadvertent attack against normal self. Yet, the mechanisms that guide NK cell tolerance differ from those guiding T and B cell tolerance. Here, we discuss how NK cells are licensed by self-MHC class I molecules through their inhibitory receptors which results in NK cell functional competence to be triggered through their activation receptors. We discuss recent data with respect to issues related to licensing, thereby providing a framework for unifying concepts on NK cell education.

Copyright © 2011 Elsevier Ltd. All rights reserved.

PMID:
21752715
[PubMed - indexed for MEDLINE]
PMCID:
PMC3151350
Free PMC Article

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