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Published on: July 26, 2019
MAIT Cells in Health and Disease
Isabelle Magalhaes1, Martin Solders2,3, Helen Kaipe2,3
1Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden. isabelle.magalhaes@ki.se.
Abstract:
Mucosal-associated invariant T (MAIT) cells are a newly described subset of T cells that are found in the blood and are enriched in many tissues, particularly in the liver. MAIT cells express a semi-invariant T cell receptor restricted by the MHC class I-related (MR1) molecule. MAIT cells are activated in a MR1-dependent manner in response to microbial-derived riboflavin metabolites which leads to rapid effector functions, but they can also be activated in a MR1-independent manner by cytokines and viruses. The use of mice models and MR1 tetramers, among other recent methodological advances, have provided more insight into the development, mode of activation, characterization in different diseases and tissues of MAIT cells. In this chapter, we provide an overview of MAIT cells and yet remaining questions about their potential therapeutic role.
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