Human liver-derived MAIT cells differ from blood MAIT cells in their metabolism and response to TCR-independent activation.
Rajesh Lamichhane, Fran Munro, Thomas WR Harrop, Sara M de la Harpe, Peter K Dearden, Andrea J Vernall, John L McCall, James E Ussher
Eur J Immunol | Published : 2021
Mucosal associated invariant T (MAIT) cells are anti-microbial innate-like T cells that are abundant in blood and liver. MAIT cells express a semi-invariant T-cell receptor (TCR) that recognizes a pyrimidine ligand, derived from microbial riboflavin synthesis, bound to MR1. Both blood and liver derived (ld)-MAIT cells can be robustly stimulated via TCR or by cytokines produced during bacterial or viral infection. In this study, we compared the functional and transcriptomic response of human blood and ld-MAIT cells to TCR signals (Escherichia coli or the pyrimidine ligand) and cytokines (IL-12 + IL-18). While the response of blood and ld-MAIT cells to TCR signals were comparable, following cy..View full abstract
Awarded by Health Research Council of New Zealand