The biology and functional importance of MAIT cells
- PMID: 31406380
- DOI: 10.1038/s41590-019-0444-8
The biology and functional importance of MAIT cells
Abstract
In recent years, a population of unconventional T cells called 'mucosal-associated invariant T cells' (MAIT cells) has captured the attention of immunologists and clinicians due to their abundance in humans, their involvement in a broad range of infectious and non-infectious diseases and their unusual specificity for microbial riboflavin-derivative antigens presented by the major histocompatibility complex (MHC) class I-like protein MR1. MAIT cells use a limited T cell antigen receptor (TCR) repertoire with public antigen specificities that are conserved across species. They can be activated by TCR-dependent and TCR-independent mechanisms and exhibit rapid, innate-like effector responses. Here we review evidence showing that MAIT cells are a key component of the immune system and discuss their basic biology, development, role in disease and immunotherapeutic potential.
References
-
- Salio, M., Silk, J. D., Jones, E. Y. & Cerundolo, V. Biology of CD1- and MR1-restricted T cells. Annu. Rev. Immunol. 32, 323–366 (2014). - PubMed
-
- Godfrey, D. I., Uldrich, A. P., McCluskey, J., Rossjohn, J. & Moody, D. B. The burgeoning family of unconventional T cells. Nat. Immunol. 16, 1114–1123 (2015). - PubMed
-
- Porcelli, S., Yockey, C. E., Brenner, M. B. & Balk, S. P. Analysis of T cell antigen receptor (TCR) expression by human peripheral blood CD4–8– α/β T cells demonstrates preferential use of several V beta genes and an invariant TCR alpha chain. J. Exp. Med. 178, 1–16 (1993). Ref. 3 is the first publication to describe the invariant TRAV1-2 + TRAJ33 + TCR α-chain that defines MAIT cells. - PubMed
-
- Tilloy, F. et al. An invariant T cell receptor alpha chain defines a novel TAP-independent major histocompatibility complex class Ib-restricted alpha/beta T cell subpopulation in mammals. J. Exp. Med. 189, 1907–1921 (1999). Ref. 4 is the first publication to describe the existence of TRAV1 + TRAJ33 + T cells in mice and to investigate TRAV1-2 + TRAJ33 + T cells in humans. - PubMed - PMC
-
- Treiner, E. et al. Selection of evolutionarily conserved mucosal-associated invariant T cells by MR1. Nature 422, 164–169 (2003). Ref. 5 defined MR1 as the restriction element for MAIT cells and also demonstrated their enrichment in mucosal tissues and coined the term ‘mucosal-associated invariant T cells’. - PubMed
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