Human gut microbes impact host serum metabolome and insulin sensitivity

Helle Krogh Pedersen, Valborg Gudmundsdottir, Henrik Bjørn Nielsen, Tuulia Hyotylainen, Trine Nielsen, Benjamin A. H. Jensen, Kristoffer Forslund, Falk Hildebrand, Edi Prifti, Gwen Falony, Emmanuelle Le Chatelier, Florence Levenez, Joel Dore, Ismo Mattila, Damian Rafal Plichta, Paivi Poho, Lars Hellgren, Manimozhiyan Arumugam, Shinichi Sunagawa, Sara Vieira-SilvaTorben Jørgensen, Jacob Bak Holm, Kajetan Trost, Karsten Kristiansen, Susanne Brix Pedersen, Jeroen Raes, Jun Wang, Torben Hansen, Peer Bork, Søren Brunak, Matej Oresic, S. Dusko Ehrlich, Oluf Pedersen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Insulin resistance is a forerunner state of ischaemic cardiovascular disease and type 2 diabetes. Here we show how the human gut microbiome impacts the serum metabolome and associates with insulin resistance in 277 non-diabetic Danish individuals. The serum metabolome of insulin-resistant individuals is characterized by increased levels of branched-chain amino acids (BCAAs), which correlate with a gut microbiome that has an enriched biosynthetic potential for BCAAs and is deprived of genes encoding bacterial inward transporters for these amino acids. Prevotella copri and Bacteroides vulgatus are identified as the main species driving the association between biosynthesis of BCAAs and insulin resistance, and in mice we demonstrate that P. copri can induce insulin resistance, aggravate glucose intolerance and augment circulating levels of BCAAs. Our findings suggest that microbial targets may have the potential to diminish insulin resistance and reduce the incidence of common metabolic and cardiovascular disorders.
    Original languageEnglish
    JournalNature
    Volume535
    Issue number7612
    Pages (from-to)376-381
    Number of pages20
    ISSN0028-0836
    DOIs
    Publication statusPublished - 2016

    Keywords

    • Microbial genetics
    • Endocrine system and metabolic diseases

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