New Paper: Drugs and drug-like molecules can modulate the function of mucosal-associated invariant T cells.

Drugs and drug-like molecules can modulate the function of mucosal-associated invariant T cells.
Keller AN, Eckle SB, Xu W, Liu L, Hughes VA, Mak JY, Meehan BS, Pediongco T, Birkinshaw RW, Chen Z, Wang H, D’Souza C, Kjer-Nielsen L, Gherardin NA, Godfrey DI, Kostenko L, Corbett AJ, Purcell AW, Fairlie DP*, McCluskey J*, Rossjohn J*.
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Nature Immunology 2017, 18, 402-411.

The major-histocompatibility-complex-(MHC)-class-I-related molecule MR1 can present activating and non-activating vitamin-B-based ligands to mucosal-associated invariant T cells (MAIT cells). Whether MR1 binds other ligands is unknown. Here we identified a range of small organic molecules, drugs, drug metabolites and drug-like molecules, including salicylates and diclofenac, as MR1-binding ligands. Some of these ligands inhibited MAIT cells ex vivo and in vivo, while others, including diclofenac metabolites, were agonists. Crystal structures of a T cell antigen receptor (TCR) from a MAIT cell in complex with MR1 bound to the non-stimulatory and stimulatory compounds showed distinct ligand orientations and contacts within MR1, which highlighted the versatility of the MR1 binding pocket. The findings demonstrated that MR1 was able to capture chemically diverse structures, spanning mono- and bicyclic compounds, that either inhibited or activated MAIT cells. This indicated that drugs and drug-like molecules can modulate MAIT cell function in mammals.

 

http://fairlie.imb.uq.edu.au/index.php

Lysine acetylation in sexual stage malaria parasites is a target for antimalarial small molecules

Lysine acetylation in sexual stage malaria parasites is a target for antimalarial small molecules
Trenholme K, Marek L, Duffy S, Pradel G, Fisher G, Hansen FK, Skinner-Adams TS, Butterworth A, Julius Ngwa C, Moecking J, Goodman CD, McFadden GI, Sumanadasa SD, Fairlie DP, Avery VM, Kurz T, Andrews KT

Antimicrob Agents Chemother 2014 58 3666-3678.

A Molecular Basis Underpinning the T Cell Heterogeneity of Mucosal Associated Invariant T Cells.

A Molecular Basis Underpinning the T Cell Heterogeneity of Mucosal Associated Invariant T Cells.
Eckle SBG, Birkinshaw RW, Kostenko L, Corbett AJ, McWilliam HEG, Reantragoon R, Chen Z, Gherardin NA, Beddoe T, Liu L, Patel O, Meehan B, Fairlie DP, Villadangos JA, Godfrey DI, Kjer-Nielsen L, McCluskey J, Rossjohn J

J Exp Med 2014, 211, 1585-1600.