Mus musculus strain:ICR, SLC Japan
Ontology highlight
ABSTRACT:
PROVIDER: PRJDB10982 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| DRR261733_1.fastq.gz | Fastqsanger.gz | |||
| DRR261733_2.fastq.gz | Fastqsanger.gz | |||
| DRR261734_1.fastq.gz | Fastqsanger.gz | |||
| DRR261734_2.fastq.gz | Fastqsanger.gz | |||
| DRR261735_1.fastq.gz | Fastqsanger.gz |
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Project description:We performed deep RNA sequencing and systematically analyzed the global gene expression profiles of C. rodentium-infected colon tissues from both susceptible and resistant congenic mice strains to determine the common transcriptomic responses to infection and the Rspo2-mediated dysregulated pathway signatures associated with the loss of disease tolerance.
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Project description:Overall hypothesis: RNAseq can be used to examine and compare the vitamin A (VA) effect, Infection effect caused by Citrobacter rodentium (C. rodentium), and the Interaction effect (VA status × C. rodentium infection) in mouse small intestine (SI) and colon, on the scale of global transcriptome. Methods: Vitamin A deficient (VAD) mice were generated by feeding VAD diet to the pregnant C57/BL6 dams and their post-weaning offspring. Vitamin A sufficient (VAS) mice were fed with purified diet containing normal amount of VA. At weaning, mice were maintained on their respective diets and assigned to one of the four treatment groups (non-infected VAD, infected VAD, non-infected VAS and infected VAS) until the end of the experiments. For the infected groups, age-matched VAD or VAS mice were orally inoculated with C. rodentium. Mice during early (SI study) or peak (colon study) C. rodentium infection were euthanized in two separate studies. The SI study focused on SI and analyses were performed on samples collected 5 days post-infection. The colon study analyzed samples on post-infection day 10, the peak of C. rodentium infection. Total mRNA extracted from SI and colon were sequenced using Illumina HiSeq 2500 platform. Three to six biological replicates were sequenced in each group. Differentially Expressed Gene (DEG), Gene Ontology (GO) enrichment, and Weighted Gene Co-expression Network Analysis (WGCNA) were performed to characterize expression patterns and co-expression patterns. Results: a) differentially expression genes (DEGs) corresponding to VA effect were present in both the SI and colon. In SI, DEGs altered by VA were mainly involved in the retinoid metabolic pathway and immunity-related pathways. Novel target genes (e.g. Mbl2, Mmp9, Cxcl14, and Nr0b2) and cell types (based on Tuft cell and mast cell markers) under the regulation of VA were suggested by differential expression analysis coupled with the co-expression network analysis. In regard to the colon, VA demonstrated an overall suppressive effect on the cell division pathway. Finally, the comparison of co-expression modules between SI and colon indicated distinct regulatory networks in these two organs. b) In the SI, no Infection effect was detected during early infection, whereas in the colon, during peak of C. rodentium infection: 1) It has been shown that infection upregulated innate and adaptive immune functions, epithelial proliferation, apoptosis, endoplasmic reticulum stress, and reactive oxygen species production, as well as downregulated ion and water absorption. This helped to confirm the findings in previous studies, consolidating the knowledge-base about the host response to C. rodentium, 2) Pathways (e.g. neuron activity, smooth muscle contraction, vascular constriction, and developmental regulation) and additional ion transporters previously not known to be influenced by C. rodentium were suggested as potential mechanisms responsible for the diarrhea pathology and host response. 3) Retinoic acid receptor (RAR) and vitamin D receptor (VDR) signaling pathways appeared to be downregulated by infection, indicating that the malabsorption of micronutrients might be a danger signal for the host to switch from homeostasis to an anti-infection mode. c) In the SI, no Interaction (VA status × C. rodentium infection) effect was detected during early infection. In colon, 1329 genes corresponded to the Interaction effect. During the peak of C. rodentium infection, the sufficient stimulation of cell division, protein catabolism, apoptosis, transcription regulation, MHC class I, interferons, and cytokine signaling might be of key importance for the resistance of VAS mice. In addition, the proper maintenance of the proliferation, differentiation, migration, and activation of T cells and leukocytes during peak infection may also confer the VAS hosts with higher survival and clearance rate. On the other hand, our data suggested that the higher rate of lethal dehydration observed in infected VAD mice, may be attributed to the disrupted of HCO3- metabolism and an improperly high level of Cl- secretion. Conclusions: VA alters the gene expression profile in both SI and colon, whereas the Infection effect and the Interaction effect were only observed in colon during peak of C. rodentium infection, but not in the SI during early infection. Our studies suggest novel target genes and cell types under the regulation of VA in the SI, and indicate that the resistance of the VAS hosts may be attributed to the concordant control over ion/water absorption, immune functions, as well as the balance between epithelial hyperplasia and apoptosis.
2021-09-09 | GSE143290 | GEO
Project description:To further understand immune mechanims involved in regulating intestinal inflammation, we employed whole genome microarray expression profiling as a discovery platform to identify genes with the potential of regulating inflammation in the absence of IL-10. Whole colon tissue from IL-10-deficient and C57BL/6 (wild-type) mice was collected 2 weeks after Citrobacter rodentium infection and from uninfected controls. Consistent with the histological and cellular analysis, expression levels of many chemokines and cytokines involved in recruiting leukocytes and promoting inflammation were, on average, lower in IL-10 deficient compared to wild-type mice after infection. An exception to this general trend was IL-27, a cytokine with both pro- and anti-inflammatory properties. Two weeks after Citrobacter rodentium challenge, total RNA was extracted and analyzed from whole colon tissue of infected IL-10-deficient and wild-type mice, and compared to uninfected controls. Each sample contained equal amounts of total RNA from 4-5 female mice which were pooled and used in the experiment.
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Project description:To describe the protein profile in hippocampus, colon and ileum tissue’ changing after the old faeces transplants, we adopted a quantitative label free proteomics approach.
2021-09-09 | PXD016432 | Pride
Project description:The intestinal epithelium is our first line of defense against infections of the gut and the plasticity in cellular differentiation of the intestinal epithelium is an important part of this response. Here we sequenced the colon intestinal epithelium from mice infected with Citrobacter rodentium to determine how the intestinal epithelium adapts in the context of an infection. By comparing these data to small intestinal organoids treated with cytokines (see related accessions) we determine that the intestinal epithelial response to C. rodentium infection correspond to a type III infection driven by IL22.
2022-05-08 | E-MTAB-9184 | biostudies-arrayexpress
Project description:Transcriptional profiling of intestinal response to Citrobacter rodentium in wild-type and Nlrp12-deficient mice Four-conditions experiment, Nlrp12-deficient mouse infected by Citrobacter rodentium at day 7 versus non-infected Nlrp12-deficient mice with two biologicals replicates , Wild-type mouse infected by Citrobacter rodentium at day 7 versus non-infected Wild-type mice with two biologicals replicates and Nlrp12-deficient mouse infected by Citrobacter rodentium versus Control mouse infected by Citrobacter rodentium at 2 differents times ( day 0 and post infection at day 7 ) with three biologicals replicates
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Project description:Profiling of a total of 34,790 genes revealed a wide range of expression changes during the course of C. rodentium infection in murine colon. The majority of changes were observed during weeks 1 and 2, while relatively fewer changes were seen at week 3. Interestingly, chemokines made up 20% of the top twenty upregulated genes.
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Project description:Murine intestinal lymphoid tissue infected with Yersinia enterocolitica
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