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Interleukin-36 cytokines alter the intestinal microbiome and can protect against obesity and metabolic dysfunction.

Eirini Giannoudaki | Yasmina E Hernandez-Santana | Kelly Mulfaul | Sarah L Doyle | Emily Hams | Padraic G Fallon | Arimin Mat | Donal O'Shea | Manfred Kopf | Andrew E Hogan | Patrick T Walsh
Nature communications | 2019

Members of the interleukin-1 (IL-1) family are important mediators of obesity and metabolic disease and have been described to often play opposing roles. Here we report that the interleukin-36 (IL-36) subfamily can play a protective role against the development of disease. Elevated IL-36 cytokine expression is found in the serum of obese patients and negatively correlates with blood glucose levels among those presenting with type 2 diabetes. Mice lacking IL-36Ra, an IL-36 family signalling antagonist, develop less diet-induced weight gain, hyperglycemia and insulin resistance. These protective effects correlate with increased abundance of the metabolically protective bacteria Akkermansia muciniphila in the intestinal microbiome. IL-36 cytokines promote its outgrowth as well as increased colonic mucus secretion. These findings identify a protective role for IL-36 cytokines in obesity and metabolic disease, adding to the current understanding of the role the broader IL-1 family plays in regulating disease pathogenesis.

Pubmed ID: 31488830

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