Project description:Study comparing the effects on APAP, high fat diet and gut microbiome composition on urine, serum and colonic content/fecal metabolomes from male C57BL6/J mice. Microbiome conditions include mice that were germ-free (GF), fecal microbiota colonized (convention mouse FMT) and conventional mice with gentamicin or vancomycin shifted gut microbiomes. LC-MS/MS data acquisition was completed in positive and/or negative ionization mode.
Project description: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.
Project description:Several organs from mice (germ-free vs mono colonized) run on micro flow Exploris. Reversed-phase, ESI positive, EVO C18 column (1.7 um particle size, 1 mm x 150 mm Phenomenex, Kinetex).
Project description:Laser captured cecal epithelium from gnotobiotic mice colonized with B. thetaiotaomicron or B. longum (mono-association) or B. thetaiotaomicron bi-association with B. longum. Samples were derived from 10d colonizations of NMRI mice fed a standard-chow polysaccharide rich (PR) diet. Keywords: Germ-free vs. Mono-associations or Bi-association, in vivo
Project description:Lactobacillus NK2 (L.NK2) is a commensal microbe, isolated from the mouse intestinal feces in our lab. To examine the potential role of L. NK2 in the gut immunity, we monocolonized GF mice with L.NK2. And, we conducted a microarray experiment to compare the transcriptomes of GF and L.NK2-colonized mice intestines under the same experimental condition We used microarrays to detail the global programme of gene expression in intestinal epithelial cells (IEC) and Peyer's patches cells (PP) of GF and L.NK2-colonized mice.
Project description:Laser captured cecal epithelium from gnotobiotic mice colonized with B. thetaiotaomicron or B. longum (mono-association) or B. thetaiotaomicron bi-association with B. longum. Samples were derived from 10d colonizations of NMRI mice fed a standard-chow polysaccharide rich (PR) diet. Keywords: Germ-free vs. Mono-associations or Bi-association, in vivo Total RNA was prepared from laser captured cecal epithelium of 10 day associated gnotobiotic mice, double amplified, and hybridized to 430 2.0 GeneChips or to GlycoGeneChipsv1.