Campylobacter jejuni
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA139357 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Transcriptional profile of C. jejuni NCTC11168 while growing in MEM medium containing L-fucose. We hypothesize that certain C. jejuni strains, containing A certain genomic island, have acquired the ability to metabolize fucose. This study demonstrates the transcriptional profile C. jejuni growth while utilizing fucose.
2011-04-01 | GSE28294 | GEO
Project description:Campylobacter jejuni Utilization of Mucin
| PRJNA139359 | ENA
Project description:Transcriptional profile of C. jejuni NCTC11168 while growing in MEM medium containing L-fucose. We hypothesize that certain C. jejuni strains, containing A certain genomic island, have acquired the ability to metabolize fucose. This study demonstrates the transcriptional profile C. jejuni growth while utilizing fucose. Microarray data was collected from three independent biological replicates and 6-9 technical replicates for each biological replicate.
2011-04-01 | E-GEOD-28294 | biostudies-arrayexpress
Project description:Growth of Campylobacter jejuni in butyrate, including deletions of a TCS involved in sensing this response
2021-01-01 | GSE142852 | GEO
Project description:Strain specific growth of C. jejuni on fucose has been linked to a plasticity region of the chromosome (PR2) and confers a competitive advantage during intestinal colonization. Growth on fucose induces gene expression of PR2 genes, but the regulatory mechanism of the structural genes involved with fucose utilization is unknown. Additionally, the mechanism of fucose dissimilation by C. jejuni is not known since no fucose catabolism homologs are found in the C. jejuni genome. Transcriptional profiles of C. jejuni grown with and without fucose may provide insight in to the genes that are necessary for fucose utilization. The design utilized an available two color microarray slide for the entire transcriptome of Campylobacter jejuni wild type strain NCTC 11168. Each sample represents one competitive hybridization: sham-treated NCTC 11168 v.s. 25mM fucose treated NCTC 11168. There were four biological replicates of each sample with a dye swap introduced in alternating replicates. Samples were independently grown, treated and harvested.
2014-01-01 | E-GEOD-46752 | biostudies-arrayexpress
Project description:Campylobacter jejuni is the most prevalent cause of foodborne bacterial enteritis worldwide. This study aims at the characterisation of pathomechanisms and signalling in Campylobacter-induced diarrhoea in the human mucosa. During routine colonoscopy, biopsies were taken from patients suffering from campylobacteriosis. RNA-seq of colon biopsies was performed to describe Campylobacter jejuni-mediated effects. Mucosal mRNA profiles of acutely infected patients and healthy controls were generated by deep sequencing using Illumina HiSeq 2500. This data provide the basis for subsequent upstream regulator analysis.
2017-10-10 | GSE88710 | GEO
Project description:Bacteria have evolved different mechanisms to catabolize carbon sources from a mixture of nutrients. They first consume their preferred carbon source, before others are used. Regulatory mechanisms adapt the metabolism accordingly to maximize growth and to outcompete other organisms. The human pathogen Campylobacter jejuni is an asaccharolytic Gram-negative bacterium that catabolizes amino acids and organic acids for growth. It prefers serine and aspartate as carbon sources, however it lacks all regulators known to be involved in regulating carbon source utilization in other organisms. In which manner C. jejuni adapts its metabolism towards the presence or absence of preferred carbon sources is unknown. In this study, we show with transcriptomic analysis and enzyme assays how C. jejuni adapts its metabolism in response to its preferred carbon source serine. In the presence of serine as well as lactate and pyruvate C. jejuni represses the utilization of other carbon sources, by repressing the expression of a number of central metabolic enzymes. The regulatory proteins RacR, Cj1000 and CsrA play a role in the regulation of these metabolic enzymes. This metabolism dependent transcriptional repression correlates with an accumulation of intracellular succinate. Hence, we propose a demand-based catabolite repression mechanism in C. jejuni, which depends on the intracellular succinate level.
2017-10-01 | GSE104231 | GEO
Project description:Expression arrays comparing Campylobacter jejuni NCTC11168 during growth in the cecum of germ-free C57 BL/6 IL-10 knockout mice to C. jejuni NCTC11168 during growth in Bolton broth.
2011-04-14 | GSE28578 | GEO
Project description:Campylobacter jejuni is a major zoonotic pathogen transmitted to humans via the food chain. C. jejuni is prevalent in chickens, a natural reservoir for this pathogenic organism. Due to the importance of macrolide antibiotics in clinical therapy of human campylobacteriosis, development of macrolide resistance in Campylobacter has become a concern for public health.To facilitate understanding the molecular basis associated with the fitness difference between Erys and Eryr Campylobacter, we compared the transcriptomes between ATCC 700819 and its isogenic Eryr transformant T.L.101 using DNA microarray.
2011-11-02 | GSE33330 | GEO
Project description:In Campylobacter jejuni CmeR functions as a transcriptional repressor modulating the expression of the multidrug efflux pump CmeABC, which plays an important role in the resistance to antimicrobial agents and bile compounds. Using DNA microarray, we identified multiple genes that are either activated or repressed by CmeR in C. jejuni. The DNA microarray data was independently confirmed by quantitative real-time RT-PCR. The CmeR-regulated genes encode products of diverse functions including membrane proteins, drug efflux transporters, the C4-dicarboxylate transport/utilization system, and enzymes involved in the biosynthesis of capsular polysaccharide (CPS). Immunoblotting and Alcian blue staining further showed that CPS production is reduced in the cmeR mutant, confirming the regulation of CPS production by CmeR. Electrophoretic mobility shift assay revealed that recombinant CmeR bound specifically to several intergenic regions in the CPS gene cluster, suggesting that CmeR directly regulates this gene cluster. In the chicken host, the mutant carrying a null mutation in cmeR was severely outcompeted by the isogenic wild-type strain. Together these data indicate that CmeR functions as a global regulator in C. jejuni, modulates the expression of genes encoding diverse functions, and is important for the fitness of Campylobacter in the intestinal tract. Keywords: cell type comparison
2008-02-27 | GSE5412 | GEO