1. Interplay between carbohydrate and lipid in recognition of glycolipid antigens by natural killer T cells.
- Author
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Pei B, Vela JL, Zajonc D, and Kronenberg M
- Subjects
- Animals, Antigen Presentation, Antigens chemistry, Antigens, Bacterial chemistry, Antigens, Bacterial metabolism, Antigens, CD1 metabolism, Binding Sites, Borrelia immunology, Galactosylceramides chemistry, Galactosylceramides immunology, Galactosylceramides metabolism, Glycolipids chemistry, Glycolipids metabolism, Humans, Mice, Models, Immunological, Models, Molecular, Natural Killer T-Cells metabolism, Receptors, Antigen, T-Cell metabolism, Sphingomonas immunology, Antigens metabolism, Glycolipids immunology, Natural Killer T-Cells immunology
- Abstract
Natural killer T (NKT) cells are a T cell subpopulation that were named originally based on coexpression of receptors found on natural killer (NK) cells, cells of the innate immune system, and by T lymphocytes. The maturation and activation of NKT cells requires presentation of glycolipid antigens by CD1d, a cell surface protein distantly related to the major histocompatibility complex (MHC)-encoded antigen presenting molecules. This specificity distinguishes NKT cells from most CD4(+) and CD8(+) T cells that recognize peptides presented by MHC class I and class II molecules. The rapid secretion of a large amount of both Th1 and Th2 cytokines by activated NKT cells endows them with the ability to play a vital role in the host immune defense against various microbial infections. In this review, we summarize progress on identifying the sources of microbe-derived glycolipid antigens recognized by NKT cells and the biochemical basis for their recognition., (© 2012 New York Academy of Sciences.)
- Published
- 2012
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