Project description:Microarray transcriptome analysis of colonocytes from conventionally raised and germfree mice. 12 samples were analyzed, with 6 germfree (GF) samples vs. 6 conventionally raised (CONV) samples.
Project description:Transcriptional profiling of intestinal tissue samples from germ-free and conventionally raised mice which are either wild-type or Myd88-/-
Project description:Endogenous intestinal microbiota have wide-ranging and largely uncharacterized effects on host physiology. Here, we used reverse-phase liquid chromatography-coupled tandem mass spectrometry to define the mouse intestinal proteome in the stomach, jejunum, ileum, cecum, and proximal colon under three colonization states: germ-free, monocolonized with Bacteroides thetaiotaomicron, and conventionally raised. Our analysis revealed distinct proteomic abundance profiles along the gastrointestinal tract. Unsupervised clustering showed that host protein abundance primarily depended on gastrointestinal location rather than colonization state and specific proteins and functions that defined these locations were identified by random forest classifications. K-means clustering of protein abundance across locations revealed substantial differences in host protein production between conventionally raised mice relative to germ-free and monocolonized mice. Finally, comparison to fecal proteomic datasets suggested that the identities of stool proteins are not biased to any region of the gastrointestinal tract, but are substantially impacted by the microbiota in the distal colon.
Project description:Whole-transcriptome survey of gene expression differences between germ-free (GF) and conventionally raised (CONV-R) mice. To assess the role of toll-like receptor signalling, both wild-type and Myd88 -/- mice were used.
Project description:Whole-transcriptome survey of gene expression differences between germ-free (GF) and conventionally raised (CONV-R) mice. To assess the role of toll-like receptor signalling, both wild-type and Myd88 -/- mice were used.
Project description:Intestinal epithelial cells were isolated from total small intestine of each four 28-day old conventionally raised (conv) and germ-free (GF) bred C57BL/6 mice (protocol according to: Lotz et al., J. Exp Med. 2006). Total RNA was isolated by TriZol and ist purity was examined using a Bioanalyszer. We used microarrays to comparatively detail the global gene expression in primary total isolated intestinal epithelial cells. Four biological replicates from isolated intestinal epithelial cells obtained from each 4 germ-free bred and conventionally raised mice. Colour change.
