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Clostridium sporogenes-derived metabolites protect against colonic inflammation

ABSTRACT: Purpose: Gut microbiota-derived metabolites play a pivotal role in the maintenance of local gut homeostasis and can even induce systemic effects via accumulation in the bloodstream. Here, we demonstrate that mono-colonization of germ-free (GF) mice with Clostridium sporogenes protects mice from inflamation and death induced by DSS colitis. Method: 8-12-week-old male mice (GF, SPF and GF colonized with C. sporogenes (CS)) were treated with 2.5% DSS in drinking water for 5 days and colon tissue was isolated on day 7. RNA was isolated from the colon tissue and RNA sequenzing was performed. Results: Mono-colonization of GF mice with Clostridium sporogenes protected the mice from DSS colitis induced death, while producing high amounts of indole-3-propionic acid (IPA), branched chain (BCFA) and short-chain (SCFA) fatty acids. In comparison to CS mice, SPF mice showed much higher levels of inflammatory related genes and a worse histological score. Conclusion: Histological stainings and the RNAseq both showed high levels of protection of C. sporogenes colonized mice in colitis, compared to SPF and GF animals. The data provide evidence for a therapeutic potential of C. sporogenes for IBD patients.

ORGANISM(S): Mus musculus

PROVIDER: GSE264024 | GEO | 2024/10/15

REPOSITORIES: GEO

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Project description:Although microbiota plays a critical role for the normal development and function of host immune systems, the detail of the influence, especially on those in the large intestine (LI), remains unknown. Here, we performed transcriptome analysis using Affymetrix GeneChip on LI of germ-free (GF) and specific pathogen free (SPF) mice of IQI, an inbred strain established from ICR. Experiment Overall Design: Male germ-free (GF) and specific pathogen-free (SPF) IQI/Jic mice were bred and maintained in the laboratory of Central Institute for Experimental Animals (CIEA, Kawasaki, Kanagwa, Japan). GF mice were housed in a Trexler-type flexible film isolator in a standard germ free state and screened on a weekly basis for germ-free status by sampling feces sterilely and culturing on MRS-agar plates under aerobic and anaerobic conditions. All the GF, SPF, ex-GF mice were kept in a 12: 12-h light/dark cycle and at a temperature of 22+-2 ÂºC. Nine week old mice (n=3) were sacrificed by cervical dislocation and the colon was dissected (the colon was not divided into proximal and distal sections and was treated as a single intestinal section). Experiment Overall Design: The SPF mice were provided by the Central Institute for Experimental Animals of Japan. These mice were determined free of the following pathogens (by various techniques including culture, microscopic observation, serological test, and PCR): Dermatophytes, Citrobacter rodentium, Pasteurella pneumotropica, Corynebacterium kutscheri, Pseudomonas aeruginosa, Salmonella spp., Staphylococcus aureus, Mycoplasma pulmonis, Corynebacterium kutscheri, Salmonella typhimurium, Clostridium piliforme, Mycoplasma pulmonis, Mouse hepatitis virus, Sendai virus, Ectromelia virus, Lymphocytic c. virus, Hantavirus, Giardia muris, Spironucleus muris, Syphacia spp., Aspiculuris tetraptera, Ectoparasits, Intestinalprotozoa, Pinworm, Pneumocystis carinii, Helicobacter hepaticus, Helicobacter bilis, EDIM virus(Rotavirus), Pneumonia virus of mice, Minute virus of mice, Mouse adenovirus, Mouse cytomegalovirus, Mouse encephalomyelitis virus, Reovirus type3, and CAR bacillus.

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Clostridium sporogenes-derived metabolites protect against colonic inflammation

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