ArticleMicrobiome2024
Eubacterium siraeum suppresses fat deposition via decreasing the tyrosine-mediated PI3K/AKT signaling pathway in high-fat diet-induced obesity.
Article in Microbiome, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed.
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- Spatiotemporal screening and functional analysis of gut microbiota associated with abdominal fat deposition in breeder broiler hens.Poultry science · 2026Article
- Comorbid Alzheimer's Disease and Type 2 Diabetes Microbiota Shape Age-Associated Gut-Brain Axis Profiles.Aging cell · 2026Article
- Associations of the gut microbiome and cardiometabolic risk in adolescence: the HOME study.BMC medical genomics · 2026Article
- Metagenome-assembled genomes from the gut microbiome of spontaneous diabetic macaques provide insights into microbes associated with type 2 diabetes mellitus.BMC microbiology · 2026Article
- Genomic safety assessment and metabolic modulation by Enterococcus faecium 140,623, a probiotic strain from lactasin tablets: implications for obesity management.World journal of microbiology & biotechnology · 2026Article
- The gut-heart axis in coronary artery disease: a scoping and narrative review of sex-based microbial and metabolic disparities.Biology of sex differences · 2026Article
- Exposure to 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine causes cecal microbiota dysbiosis in mice.Frontiers in microbiology · 2026Article
- Intestinal microbiota contributes to the heterogeneity of fat deposition by promoting mitochondrial fatty acid β-oxidation.Gut microbes · 2025Article
- Bioactive Plasmid- and Phage-Encoded Antimicrobial Peptides (AMPs) in the Human Gut: A Metatranscriptome-Virome Profiling Reveals Exploratory Links to Metabolic Human Diseases.Microbial ecology · 2025Article
- Advances in understanding the role of gut microbiota in fat deposition and lipid metabolism.Journal of animal science and biotechnology · 2025Review
- Gut microbiota and metabolites in lipid metabolism and intramuscular fat deposition: mechanisms and implications for meat quality.Journal of animal science and biotechnology · 2025Review
- Novel Role of Gut-Derived Roseburia Intestinalis in Safeguarding Intestinal Barrier Integrity and Microenvironment Homeostasis During Arsenic Exposure.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Gut-resident Phascolarctobacterium succinatutens decreases fat accumulation via MYC-driven epigenetic regulation of arginine biosynthesis.NPJ biofilms and microbiomes · 2025Article
- Effects of Different Levels of Flea Infestation on Gut Microbiota of Brandt's Voles (Animals : an open access journal from MDPI · 2025Article
- Mechanisms of gut microbiota in host fat deposition: metabolites, signaling pathways, and translational applications.Frontiers in microbiology · 2025Review
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10 authors.
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Abstract
backgroundObesity in humans can lead to chronic diseases such as diabetes and cardiovascular disease. Similarly, subcutaneous fat (SCF) in pigs affects feed utilization, and excessive SCF can reduce the feed efficiency of pigs. Therefore, identifying factors that suppress fat deposition is particularly important. Numerous studies have implicated the gut microbiome in pigs' fat deposition, but research into its suppression remains scarce. The Lulai black pig (LL) is a hybrid breed derived from the Laiwu pig (LW) and the Yorkshire pig, with lower levels of SCF compared to the LW. In this study, we focused on these breeds to identify microbiota that regulate fat deposition. The key questions were: Which microbial populations reduce fat in LL pigs compared to LW pigs, and what is the underlying regulatory mechanism?
resultsIn this study, we identified four different microbial strains, Eubacterium siraeum, Treponema bryantii, Clostridium sp. CAG:413, and Jeotgalibaca dankookensis, prevalent in both LW and LL pigs. Blood metabolome analysis revealed 49 differential metabolites, including tanshinone IIA and royal jelly acid, known for their anti-adipogenic properties. E. siraeum was strongly correlated with these metabolites, and its genes and metabolites were enriched in pathways linked to fatty acid degradation, glycerophospholipid, and glycerolipid metabolism. In vivo mouse experiments confirmed that E. siraeum metabolites curb weight gain, reduce SCF adipocyte size, increase the number of brown adipocytes, and regulate leptin, IL-6, and insulin secretion. Finally, we found that one important pathway through which E. siraeum inhibits fat deposition is by suppressing the phosphorylation of key proteins in the PI3K/AKT signaling pathway through the reduction of tyrosine.
conclusionsWe compared LW and LL pigs using fecal metagenomics, metabolomics, and blood metabolomics, identifying E. siraeum as a strain linked to fat deposition. Oral administration experiments in mice demonstrated that E. siraeum effectively inhibits fat accumulation, primarily through the suppression of the PI3K/AKT signaling pathway, a critical regulator of lipid metabolism. These findings provide a valuable theoretical basis for improving pork quality and offer insights relevant to the study of human obesity and related chronic metabolic diseases. Video Abstract.
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