Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Genome-wide map of RNA polymerase occupancy of Salmonella enterica cells during cytosolic Mg2+ limitation.

ABSTRACT: We report the identification of genes displaying altered RNA polymerase occupancy in Salmonella enterica cells experiencing cytosolic magnesium starvation.

ORGANISM(S): Salmonella enterica subsp. enterica serovar Typhimurium

PROVIDER: GSE104159 | GEO | 2017/09/23

SECONDARY ACCESSION(S): PRJNA411839

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Niche-specific profiling reveals transcriptional adaptations required for the cytosolic lifestyle of Salmonella enterica

Project description:Salmonella enterica serovar Typhimurium (S. Typhimurium) is a zoonotic pathogen that causes diarrheal disease in humans and animals. During salmonellosis, S. Typhimurium colonizes epithelial cells lining the gastrointestinal tract. S. Typhimurium has an unusual lifestyle in epithelial cells that begins within an endocytic-derived Salmonella-containing vacuole (SCV), followed by escape into the cytosol, epithelial cell lysis and bacterial release. The cytosol is a more permissive environment than the SCV and supports rapid bacterial growth. The physicochemical conditions encountered by S. Typhimurium within the cytosol, and the bacterial genes required for cytosolic colonization, remain unknown. Here we have exploited the parallel colonization strategies of S. Typhimurium in epithelial cells to decipher the two niche-specific bacterial virulence programs. By combining a population-based RNA-seq approach with single-cell microscopic analysis, we identified bacterial genes/sRNAs with cytosol-specific or vacuole-specific expression signatures. Using these genes/sRNAs as environmental biosensors, we defined that Salmonella is exposed to iron and manganese deprivation and oxidative stress in the cytosol and zinc and magnesium deprivation in the SCV. Furthermore, iron availability was critical for optimal S. Typhimurium replication in the cytosol, as well as entC, fepB, soxS and sitA-mntH. Virulence genes that are typically associated with extracellular bacteria, namely Salmonella pathogenicity island 1 (SPI1) and SPI4, had a cytosolic-specific expression profile. Our study reveals that the cytosolic and vacuolar S. Typhimurium virulence gene programs are unique to, and tailored for, residence within distinct intracellular compartments. Therefore, this archetypical vacuole-adapted pathogen requires extensive transcriptional reprogramming to successfully colonize the mammalian cytosol.

2021-06-30 | GSE179103 | GEO

FabR ChIP-chip on Salmonella enterica subsp. enterica serovar Typhimurium SL1344

Project description:FabR ChIP-chip on Salmonella enterica subsp. enterica serovar Typhimurium SL1344 using anti-Myc antibody against strain with chromosomally 9Myc-tagged FabR (IP samples) and wildtype strain (mock IP samples)

2014-12-31 | GSE52877 | GEO

Genome-wide map of RNA polymerase occupancy of Salmonella enterica cells during cytosolic Mg2+ limitation.

Project description:Genome-wide map of RNA polymerase occupancy of Salmonella enterica cells during cytosolic Mg2+ limitation.

| PRJNA411839 | ENA

AP-qMS of retron proteins in Salmonella enterica

Project description:We performed affinity purification coupled to quantitative mass spectrometry (AP-qMS) for proteins belonging to retrons of Salmonella enterica. We quantified the proteome of rcaT point mutants in Salmonella enterica. We quantified the proteome of phage P1vir in E. coli.

2022-06-13 | PXD022376 | Pride

Dendritic cells infected with Salmonella enterica

Project description:Salmonella enterica causes serious global burden of morbidity and mortality and is a major cause of infant bacteremia in sub Saharan Africa. Diseases caused by Salmonella are treatable with antibiotics but successful antibiotic treatment has become difficult due to antimicrobial resistance. An effective vaccine together with public health effort may therefore be a better strategy to control these infections. Protective immunity against Salmonella depends primarily on T cell-mediated immune responses and therefore identifying relevant T cell antigens is necessary for Salmonella vaccine development. Our laboratory has used an immunoproteomics approach to identify Chlamydia T cell antigens that exhibited significant protection against Chlamydia infection in mice. In this study, we infected murine bone marrow derived dendritic cells from C57BL/6 mice with Salmonella enterica strain SL1344 followed by isolation of MHC class I and II- molecules and elution of bound peptides. The sequences of the peptides were then identified using tandem mass spectrometry. We identified 87 MHC class II and 23 MHC class I Salmonella derived peptides. Four of 12 peptides stimulated IFN-? production by CD4 T cells from the spleens of mice with persistent Salmonella infection. These antigens will be useful for Salmonella immunobiology research and are potential Salmonella vaccine candidates.

2016-12-14 | PXD004451 | Pride

Thermal proteome profiling of Salmonella enterica infection

Project description:We performed two dimensional thermal proteome profiling (2D-TPP) of the infection time course of Salmonella enterica.

2024-08-08 | PXD043344 | Pride

Space of Salmonella enterica Proteomic

Project description:The effects of space environment on the of Salmonella enterica protemic production

2018-11-09 | PXD011651 |

Expression analysis of Salmonella enterica serovar Typhimurium 14028 delta GidA mutant

Project description:Investigation of whole genome gene expression level changes in a Salmonella enterica serovar Typhimurium 14028 delta GidA mutant The mutant described in this study is further analyzed in Shippy, D. C., N. M. Eakley, P. N. Bochsler, and A. A. Fadl. 2011. Biological and virulence characteristics of Salmonella enterica serovar Typhimurium following deletion of glucose-inhibited division (gidA) gene. Microb Pathog.

2011-07-20 | GSE30787 | GEO

Expression analysis of Salmonella enterica serovar Typhimurium UK1 delta-iacP mutant

Project description:Investigation of whole genome gene expression level changes in a Salmonella enterica serovar Typhimurium UK1 delta-iacP mutant, compared to the wild-type strain. IacP is resoponsible for the secretion of virulence effector proteins via the type III secretion system, thereby contributing the virulence of S. Typhimurium. The mutants analyzed in this study are further described in Kim et al. 2011. Role of Salmonella Pathogenicity Island 1 Protein IacP in Salmonella enterica Serovar Typhimurium Pathogenesis. Infection and Immunity 79(4):1440-1450 (PMID 21263021).

2012-04-30 | GSE34663 | GEO

Salmonella enterica serovar Typhimurium SL1344 cells: wildtype vs. ΔfabR mutant

Project description:Transcriptional profiling of Salmonella enterica serovar Typhimurium SL1344 cells comparing wildtype with ΔfabR mutant. Salmonella strains were cultured under free-living TSB conditions (TSB 1/20, 200 rpm, 25 °C) for 6h (ca. 2 x 108 cells/ml).

2014-12-31 | GSE52880 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data