TitleTranskingdom interactions between Lactobacilli and hepatic mitochondria attenuate western diet-induced diabetes.
Publication TypeJournal Article
Year of Publication2021
AuthorsRodrigues, RR, Gurung, M, Li, Z, Garcia-Jaramillo, M, Greer, R, Gaulke, C, Bauchinger, F, You, H, Pederson, JW, Vasquez-Perez, S, White, KD, Frink, B, Philmus, B, Jump, DB, Trinchieri, G, Berry, D, Sharpton, TJ, Dzutsev, A, Morgun, A, Shulzhenko, N
JournalNat Commun
Date Published2021 01 04
KeywordsAnimals, Bilirubin, Diabetes Mellitus, Type 2, Diet, Western, Gastrointestinal Microbiome, Gene Expression Regulation, Glucose, Glutathione, Humans, Lactobacillus, Lipid Metabolism, Male, Metabolomics, Mice, Inbred C57BL, Mitochondria, Liver, Reproducibility of Results, Transcriptome

Western diet (WD) is one of the major culprits of metabolic disease including type 2 diabetes (T2D) with gut microbiota playing an important role in modulating effects of the diet. Herein, we use a data-driven approach (Transkingdom Network analysis) to model host-microbiome interactions under WD to infer which members of microbiota contribute to the altered host metabolism. Interrogation of this network pointed to taxa with potential beneficial or harmful effects on host's metabolism. We then validate the functional role of the predicted bacteria in regulating metabolism and show that they act via different host pathways. Our gene expression and electron microscopy studies show that two species from Lactobacillus genus act upon mitochondria in the liver leading to the improvement of lipid metabolism. Metabolomics analyses revealed that reduced glutathione may mediate these effects. Our study identifies potential probiotic strains for T2D and provides important insights into mechanisms of their action.

Alternate JournalNat Commun
PubMed ID33397942
PubMed Central IDPMC7782853
Grant ListR01 DK103761 / DK / NIDDK NIH HHS / United States