Cholesteryl glucosides signal through the carbohydrate recognition domain of the macrophage inducible C-type lectin (mincle)
- 14 March 2021
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Organic & Biomolecular Chemistry
- Vol. 19 (10), 2198-2202
- https://doi.org/10.1039/d0ob02342f
Abstract
Cholesteryl alpha-d-glucosides (alpha GCs) are unique metabolic products of the cancer-causing human pathogen Helicobacter pylori. Via signalling through the Macrophage inducible C-type lectin (Mincle) and the induction of a pro-inflammatory response, they are thought to play a role in the development of gastric atrophy. Herein, we prepared the first library of steryl d-glucosides and determined that they preferentially signal through the carbohydrate recognition domain of human Mincle, rather than the amino acid consensus motif. Lipidated steryl d-glucosides exhibited enhanced Mincle agonist activity, with C18 cholesteryl 6-O-acyl-alpha-d-glucoside (2c) being the most potent activator of human monocytes. Despite exhibiting strong Mincle signalling, sito- (5b) and stigmasterol glycosides (6b) led to a poor inflammatory response in primary cells, suggesting that Mincle is a potential therapeutic target for preventing H. pylori-mediated inflammation and cancer.Funding Information
- Health Research Council of New Zealand (Hercus Fellowship)
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