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Longitudinal analysis of serum cytokine levels and gut microbial abundance links IL-17/IL-22 with Clostridia and insulin sensitivity in humans

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posted on 04.05.2020 by Ada Admin, Xin Zhou, Jethro S. Johnson, Daniel Spakowicz, Wenyu Zhou, Yanjiao Zhou, Erica Sodergren, Michael Snyder, George M. Weinstock
Recent studies using mouse models suggest that interaction between the gut microbiome and IL-17/IL-22 producing cells plays a role in the development of metabolic diseases. We investigated this relationship in humans using data from the prediabetes study of the Integrated Human Microbiome Project (iHMP). Specifically, we addressed the hypothesis that early in the onset of metabolic diseases there is a decline in serum levels of IL-17/IL-22, with concomitant changes in the gut microbiome. Clustering iHMP study participants on the basis of longitudinal IL-17/IL-22 profiles identified discrete groups. Individuals distinguished by low levels of IL-17/IL-22 were linked to established markers of metabolic disease, including insulin sensitivity. These individuals also displayed gut microbiome dysbiosis, characterized by decreased diversity, and IL-17/IL-22-related declines in the phylum Firmicutes, class Clostridia, and order Clostridiales. This ancillary analysis of the iHMP data therefore supports a link between the gut microbiome, IL-17/IL-22 and the onset of metabolic diseases. This raises the possibility for novel, microbiome-related therapeutic targets that may effectively alleviate metabolic diseases in humans as they do in animal models.

Funding

This work was supported by the NIH Common Fund Human Microbiome Project (HMP) (1U54DE02378901). We thank Monika Avina and The Human Immune Monitoring Center (HIMC) for performing cytokine assays.

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