Transient colonizing microbes promote gut dysbiosis and functional impairment
Sunjae Lee, Victoria Meslier, Gholamreza Bidkhori, Fernando García-Guevara, Lucie Etienne‐Mesmin, Frederick Clasen, Junseok Park, Florian Plaza Oñate, Haizhuang Cai, Emmanuelle Le Chatelier, Nicolas Pons, Marcela Pereira, Maike Seifert, Fredrik Boulund, Lars Engstrand, Doheon Lee, Gordon Proctor, Adil Mardinoğlu, Stéphanie Blanquet‐Diot, David L. Moyes, Mathieu Almeida, S. Dusko Ehrlich, Mathias Uhlén, Saeed Shoaie
Abstract
Species composition of the healthy adult gut microbiota tends to be stable over time. Destabilization of the gut microbiome under the influence of different factors is the main driver of the microbial dysbiosis and subsequent impacts on host physiology. Here, we used metagenomics data from a Swedish longitudinal cohort, to determine the stability of the gut microbiome and uncovered two distinct microbial species groups; persistent colonizing species (PCS) and transient colonizing species (TCS). We validated the continuation of this grouping, generating gut metagenomics data for additional time points from the same Swedish cohort. We evaluated the existence of PCS/TCS across different geographical regions and observed they are globally conserved features. To characterize PCS/TCS phenotypes, we performed bioreactor fermentation with faecal samples and metabolic modeling. Finally, using chronic disease gut metagenome and other multi-omics data, we identified roles of TCS in microbial dysbiosis and link with abnormal changes to host physiology.