1. Probing Isosteric Replacement for Immunoadjuvant Design: Bis-Aryl Triazole Trehalolipids are Mincle Agonists.
- Author
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Foster MJ, Dangerfield EM, Timmer MSM, Stocker BL, and Wilkinson BL
- Abstract
Herein, we report the modular synthesis and immunological activity of seven bis-aryl triazole trehalolipids ( 1a - 1g ) as Brartemicin analogs. The compounds comprised one or two octyloxy (C8) alkyl chains and were synthesized using the venerable CuAAc reaction between the respective aryl acetylenes and a trehalose diazide. A Mincle reporter cell assay revealed that all lipidated analogs activated Mincle. Two compounds, 1c and 1d , produced strong Mincle-dependent immune responses in vitro . The activity was dependent on the degree of alkylation and regiochemistry, with 1c and 1d showing significantly increased IL-1β production in vitro compared to monoalkylated compounds and dialkylated compounds lacking ortho substitution. Molecular docking of 1c positioned the triazole in proximity to Arg-183, which may offer additional interactions that could explain the binding affinity for this class of ligand. These findings demonstrate the capability of triazole-linked Brartemicin analogs as Mincle-mediated Th1/Th17 vaccine adjuvants., Competing Interests: The authors declare no competing financial interest., (© 2024 American Chemical Society.)
- Published
- 2024
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