Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
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Παρασκευή 7 Σεπτεμβρίου 2018

Revealing the protective and pathogenic potential of MAIT cells

Publication date: November 2018

Source: Molecular Immunology, Volume 103

Author(s): Criselle D'Souza, Zhenjun Chen, Alexandra J. Corbett

Abstract

Mucosal-associated Invariant T (MAIT) cells represent a large proportion of T cells in human blood, and are also present throughout the body, being concentrated at mucosal sites. Their high level of conservation throughout mammalian evolution and recognition of conserved microbial antigens, derived from precursors of riboflavin (vitamin B2) biosynthesis, suggest an important role in protective immunity to pathogens. However, the picture that is emerging of MAIT cell immune function is increasingly complex, with numerous correlations of MAIT cell numbers with human diseases, and with recent studies demonstrating their pathogenic potential. The conditions that drive MAIT cell responses towards a protective versus pathogenic role are only beginning to be deciphered and, yet, must be understood for any attempt to harness MAIT cells therapeutically. In this review we summarise our current knowledge of immune protection and pathology driven by MAIT cells, models used to study their role in immunity and steps towards elucidating the immune signals driving these responses.

Graphical abstract

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