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Transcriptional profiles of Campylobacter jejuni NCTC 11168 and JL272 to erythromycin treatment

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Campylobacter jejuni subsp. jejuni NCTC 11168 = ATCC 700819 Campylobacter jejuni

PROVIDER: GSE43026 | GEO | 2013/10/10

SECONDARY ACCESSION(S): PRJNA184068

REPOSITORIES: GEO

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Transcriptional profiles of Campylobacter jejuni NCTC 11168 and JL272 to erythromycin treatment

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2013-10-10 | E-GEOD-43026 | biostudies-arrayexpress

Transcriptional profiles of Campylobacter jejuni NCTC 11168 to 0.125mg/L erythromycin treatment

2013-10-10 | GSE43024 | GEO

Transcriptional profiles of Campylobacter jejuni NCTC 11168 to 4mg/L erythromycin treatment

2013-10-10 | GSE43023 | GEO

Domestication of Campylobacter jejuni NCTC 11168.

Project description:Reference and type strains of well-known bacteria have been a cornerstone of microbiology research for decades. The sharing of well-characterized isolates among laboratories has run in parallel with research efforts and enhanced the reproducibility of experiments, leading to a wealth of knowledge about trait variation in different species and the underlying genetics. Campylobacter jejuni strain NCTC 11168, deposited at the National Collection of Type Cultures in 1977, has been adopted widely as a reference strain by researchers worldwide and was the first Campylobacter for which the complete genome was published (in 2000). In this study, we collected 23 C. jejuni NCTC 11168 reference isolates from laboratories across the UK and compared variation in simple laboratory phenotypes with genetic variation in sequenced genomes. Putatively identical isolates, identified previously to have aberrant phenotypes, varied by up to 281 SNPs (in 15 genes) compared to the most recent reference strain. Isolates also display considerable phenotype variation in motility, morphology, growth at 37 °C, invasion of chicken and human cell lines, and susceptibility to ampicillin. This study provides evidence of ongoing evolutionary change among C. jejuni isolates as they are cultured in different laboratories and highlights the need for careful consideration of genetic variation within laboratory reference strains. This article contains data hosted by Microreact.

| S-EPMC6700657 | biostudies-literature

Transcriptional profiles of Campylobacter jejuni NCTC 11168 to 4mg/L erythromycin treatment

Project description:Erythromycin is the drug of choice to treat campylobacteriosis, but resistance to this antibiotic is rising. The adaptive mechanisms employed by Campylobacter jejuni to erythromycin treatment remain unknown. The aim of this study is to determine the molecular basis underlying CampylobacterM-bM-^@M-^Ys immediate response to Ery treatment. The design utilized an available two color microarray slide for the entire transcriptome of Campylobacter jejuni wild type strain NCTC 11168. One hybridizations were performed: sham-treated NCTC 11168 v.s. lethal dose erythromycin treated NCTC 11168. Samples were independently grown and harvested. There were three biological replicates of each sample.

2013-10-10 | E-GEOD-43023 | biostudies-arrayexpress

Transcriptional profiles of Campylobacter jejuni NCTC 11168 to 0.125mg/L erythromycin treatment

Project description:Erythromycin is the drug of choice to treat campylobacteriosis, but resistance to this antibiotic is rising. The adaptive mechanisms employed by Campylobacter jejuni to erythromycin treatment remain unknown. The aim of this study is to determine the molecular basis underlying CampylobacterM-bM-^@M-^Ys immediate response to Ery treatment. The design utilized an available two color microarray slide for the entire transcriptome of Campylobacter jejuni wild type strain NCTC 11168. One hybridizations were performed: sham-treated NCTC 11168 v.s. sub-lethal dose erythromycin treated NCTC 11168. Samples were independently grown and harvested. There were three biological replicates of each sample.

2013-10-10 | E-GEOD-43024 | biostudies-arrayexpress

The transcriptome of erythromycin-resistant Campylobacter jejuni strain selected from NCTC 11168

Project description:Campylobacter, a major foodborne pathogen, is increasingly resistant to macrolide antibibotics. Previous findings suggested that development of macrolide resistance in Campylobacter requires a multi-step process, but the molecular mechanisms involved in the process are not known. In our study, erythromycin-resistant C. jejuni mutant (R) was selected in vitro by stepwise exposure of C. jejuni NCTC11168(S) to increasing concentrations of erythromycin.The resistant were subjected to microarray and the the global transcriptional profile was analyzed. In this series, DNA microarray was used to compare the gene expression profiles of the macrolide-resistant strain with its parent wild-type strain NCTC11168. A large number of gene showed significant changes in R. The up-regulated genes in the resistant strains are involved in miscellaneous periplasmic proteins, efflux protein and putative aminotransferase, while the majority of the down-regulated genes are involved in electron transport, lipoprotein, heat shock protein and unknown function proteins. The over-expression of efflux pump and periplasmic protein was involved in the development of resistance to macrolide in C. jejuni.

2013-08-13 | GSE49257 | GEO

Complete genome sequence of a variant of Campylobacter jejuni NCTC 11168.

Project description:Campylobacter jejuni NCTC 11168 is widely used in research, but at least two variants have been reported. The available genome was sequenced from a variant which later showed a different phenotype and gene expression profile. Here we present the complete genome sequence of a second variant of C. jejuni NCTC 11168.

| S-EPMC3486362 | biostudies-literature

Transcriptomic analysis of Campylobacter jejuni NCTC 11168 in response to epinephrine and norepinephrine.

Project description:Upon colonization in the host gastrointestinal tract, the enteric bacterial pathogen Campylobacter jejuni is exposed to a variety of signaling molecules including the catecholamine hormones epinephrine (Epi) and norepinephrine (NE). NE has been observed to stimulate the growth and potentially enhance the pathogenicity of C. jejuni. However, the underlying mechanisms are still largely unknown. In this study, both Epi and NE were also observed to promote C. jejuni growth in MEMα-based iron-restricted medium. Adhesion and invasion of Caco-2 cells by C. jejuni were also enhanced upon exposure to Epi or NE. To further examine the effect of Epi or NE on the pathobiology of C. jejuni, transcriptomic profiles were conducted for C. jejuni NCTC 11168 that was cultured in iron-restricted medium supplemented with Epi or NE. Compared to the genes expressed in the absence of the catecholamine hormones, 183 and 156 genes were differentially expressed in C. jejuni NCTC 11168 that was grown in the presence of Epi and NE, respectively. Of these differentially expressed genes, 102 genes were common for both Epi and NE treatments. The genes differentially expressed by Epi or NE are involved in diverse cellular functions including iron uptake, motility, virulence, oxidative stress response, nitrosative stress tolerance, enzyme metabolism, DNA repair and metabolism and ribosomal protein biosynthesis. The transcriptome analysis indicated that Epi and NE have similar effects on the gene expression of C. jejuni, and provided insights into the delicate interaction between C. jejuni and intestinal stress hormones in the host.

| S-EPMC4435418 | biostudies-literature

Differential RNA-sequencing of Campylobacter jejuni NCTC 11168

Project description:We report the use of differential RNA-sequencing for the determination of the primary transcriptome of wildtype Campylobacter jejuni NCTC 11168. This allows for the genome-wide determination of transcription start sites.

2013-09-13 | GSE49312 | GEO

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