Intestinal Crosstalk between Bile Acids and Microbiota and Its Impact on Host Metabolism

Annika Wahlström, Sama I Sayin, Hanns-Ulrich Marschall, Gert Fredrik Bäckhed

    710 Citations (Scopus)

    Abstract

    The gut microbiota is considered a metabolic "organ" that not only facilitates harvesting of nutrients and energy from the ingested food but also produces numerous metabolites that signal through their cognate receptors to regulate host metabolism. One such class of metabolites, bile acids, is produced in the liver from cholesterol and metabolized in the intestine by the gut microbiota. These bioconversions modulate the signaling properties of bile acids via the nuclear farnesoid X receptor and the G protein-coupled membrane receptor 5, which regulate numerous metabolic pathways in the host. Conversely, bile acids can modulate gut microbial composition both directly and indirectly through activation of innate immune genes in the small intestine. Thus, host metabolism can be affected through microbial modifications of bile acids, which lead to altered signaling via bile acid receptors, but also by altered microbiota composition.

    Original languageEnglish
    JournalCell Metabolism
    Volume24
    Issue number1
    Pages (from-to)41-50
    Number of pages10
    ISSN1550-4131
    DOIs
    Publication statusPublished - 12 Jul 2016

    Keywords

    • Journal Article
    • Review

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