Browse
Submit Data
Databases
API
Help

Dataset Information

247 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Brucella - Investigation of rifampicin resistance mechanisms in Brucella abortus using MS-driven comparative proteomics

ABSTRACT: Brucella comparison

INSTRUMENT(S): LTQ Orbitrap, instrument model

ORGANISM(S): Brucella

SUBMITTER: Pieter-Jan De Bock

PROVIDER: PRD000590 | Pride | 2012-03-30

REPOSITORIES: Pride

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	PRIDE_Exp_Complete_Ac_19733.pride.mgf.gz	Mgf
	PRIDE_Exp_Complete_Ac_19733.pride.mztab.gz	Mztab
	PRIDE_Exp_Complete_Ac_19733.xml.gz	Xml

Items per page:

1 - 3 of 3

Publications

Investigation of rifampicin resistance mechanisms in Brucella abortus using MS-driven comparative proteomics.

Sandalakis Vassilios V Psaroulaki Anna A De Bock Pieter-Jan PJ Christidou Athanasia A Gevaert Kris K Tsiotis Georgios G Tselentis Yiannis Y

Journal of proteome research 20120321 4

Mutations in the rpoB gene have already been shown to contribute to rifampicin resistance in many bacterial strains including Brucella species. Resistance against this antibiotic easily occurs and resistant strains have already been detected in human samples. We here present the first research project that combines proteomic, genomic, and microbiological analysis to investigate rifampicin resistance in an in vitro developed rifampicin resistant strain of Brucella abortus 2308. In silico analysis ...[more]

PMID: 22360387

Similar Datasets

Gene expression profiling of Brucella abortus-infected mouse macrophages

Project description:Gene expression analysis of wild-type and STING knock-out mouse bone marrow-derived macrophages (mBMDM) infected with Brucella abortus or transfected with Brucella abortus DNA. Genes whose expression are affected by Brucella abortus in a STING-dependent manner will be identified and signaling pathways regulated by STING will be elucidated.

2017-11-06 | GSE96071 | GEO

GcrA binding pattern to Brucella abortus genome

Project description:ChIP-seq analysis of GcrA atypical transcription factor in Brucella abortus

2019-09-03 | GSE136733 | GEO

RNA-seq based transcriptinal profiling of intracellular Brucella abortus and Brucella abortus-infected murine macrophages

Project description:We describe the isolation of sufficient Brucella abortus RNA from primary host cell environment using modified reported methods for RNA-seq analysis, and simultaneously characterize the transcriptional profiles of intracellular B. abortus and bone marrow-derived macrophages (BMM) from BALB/c mice at 24 h (replicative phase) post-infection.

2017-07-08 | GSE100914 | GEO

Brucella abortus ChipSeq analysis of BvrR

Project description:Brucella abortus ChipSeq analysis of BvrR

2020-11-10 | E-MTAB-9740 | biostudies-arrayexpress

RNase and sRNA activity in Brucella abortus

Project description:Isogenic deletion and truncation of specific genes encoding RNases in Brucella abortus were analyzed for changes in gene expression. The main goal of this work is to determine the mRNAs that exhibit dysregulation when small regulatory RNAs (i.e., Bsr8) or RNases (i.e., RNaseE and RNaseJ) are invactivated in Brucella abortus. Small regulatory RNAs often control gene expression by binding directly to mRNAs to block translation or induce their degradation, and RNA from a deletion of one sRNA gene, bsr8, was analyzed to uncover the mRNAs that may be controlled by BsrB. RNases are enzymes that cleave RNAs during processing, turnover, and regulatory events, and RNaseE and RNaseJ appear to be important for B. abortus virulence. Therefore, to determine the mRNAs potentially targetd by these RNases, RNA from a strain harboring a RNaseE truncation and a strain carrying a deletion of rnaseJ were analyzed. In the end, the objective of this study was to gain insight into the regulatory patterns of specific B. abortus sRNAs and RNases.

2020-07-24 | GSE155009 | GEO

Proteomic Analysis of Stationary Growth Stage and Nutritional Deficiency Adaptation Reveals Brucella Abortus Virulence Mechanisms

Project description:Brucellosis, an important bacterial zoonosis caused by Brucella species, has drawn increased attention around the world. As an intracellular pathogen, the ability of Brucella to deal with stress within the host cell is closely related to its virulence. The survival pressure on Brucella within a phagosome is considered similar to that during the stationary phase. Here, label-free proteomics approach was used to study the adaptive response of Brucella abortus (B. abortus) in the stationary stage. 182 down-regulated and 140 up-regulated proteins were found in the stationary-phase B. abortus. B. abortus adapted to adverse environmental changes by regulating virulence, reproduction, transcription, translation, stress response, and energy production. In addition, both logarithmic and stationary-phase B. abortus were treated with short-term starvation. The logarithmic-phase B. abortus restricted cell reproduction and energy utilization in response to nutritional stress. Additionally, the expression levels of some virulence-related proteins were identified as being significantly regulated during the transition from logarithmic to stationary phase or under starvation treatment, such as Type IV secretion system protein (T4SS), VjbR, and integration host factor (IHF). Altogether, we outlined adaptive mechanisms that B. abortus could employ during the growth and compared the differences between logarithmic and stationary-phase B. abortus in response to starvation.

2021-09-09 | PXD020869 | Pride

Microarray Analysis of mRNA Levels from RAW264.7 Macrophages Infected with Brucella abortus

Project description:Identification of host responses at the gene transcription level provides a molecular profile of the events that occur following infection. Brucella abortus is a facultative intracellular pathogen of macrophages that induces chronic infection in humans and domestic animals. Using microarray technology, the response of macrophages 4 hours following B. abortus infection was analyzed to identify early intracellular infection events that occur in macrophages. Of the more than 6,000 genes, we identified over 140 genes that were reproducibly differentially transcribed. First, an increase in the transcription of a number of pro-inflammatory cytokines and chemokines, such as TNF-α, IL-1β, IL-1α, and members of the SCY family of proteins, was evident that may constitute a general host recruitment of antibacterial defenses. Alternatively, Brucella may subvert newly arriving macrophages for additional intracellular infection. Second, transcription of receptors and cytokines associated with antigen presentation, e.g., MHC class II and IL-12p40, were not evident at this 4 hour period of infection. Third, Brucella inhibited transcription of various host genes involved in apoptosis, cell cycling, and intracellular vesicular trafficking. Identification of macrophage genes whose transcription was inhibited suggests that Brucella utilizes specific mechanisms to target certain cell pathways. In conclusion, these data suggest that B. abortus can alter macrophage pathways to recruit additional macrophages for future infection while simultaneously inhibiting apoptosis and innate immune mechanisms within the macrophage permitting intracellular survival of the bacterium. These results provide insights into the pathogenic strategies used by Brucella to survive long-term within a hostile environment. Keywords: Macrophage, intracellular pathogen, Brucella abortus, inflammatory immune response

2010-01-01 | GSE8384 | GEO

Transcription profiling of Brucella abortus using an ORFeome-based Brucella whole-genome DNA microarray

Project description:A direct analysis of the global transcriptional profile of B. abortus cells grown in laboratory conditions was made. Thus, three independent biological replicas were made, and following the RNA isolation, samples were reverse transcribed in aRNA and labelled with Cy3 fluorescent dye. The use of a single dye labelling approach allowed us an estimation of the genes more abundantly expressed in Brucella under laboratory conditions. The evaluation experiment was composed of three slides yielding six measurements per gene (representing three biological replicates, since each gene is present twice on each slide) to confirm the reproducibility of the gene expression data. <br>The complete dataset was sorted by the normalized and corrected fluorescence intensity values.

2008-11-27 | E-MEXP-1887 | biostudies-arrayexpress

Transcriptome analysis of mouse macrophages during Brucella abortus infection clarifies the survival mechanisms of the bacteria

Project description:Brucellosis is a critical zoonotic disease impacting humans and animals globally, causing symptoms like fever and arthritis in humans and reproductive issues in animals. The disease stems from the Brucella genus, adept at evading the immune system and proliferating within host cells. This study explores how Brucella abortus manipulates host cellular mechanisms to sustain infection, focusing on the interaction with murine macrophages over 24 hours. Initial host defenses involve innate immune responses, while Brucella's survival strategies include evading lysosomal degradation and modulating host cell functions through various pathways. The research identified significant transcriptional changes in macrophages post-infection, highlighting pathways such as cytokine storm, pyroptosis signaling, Toll-like receptor pathways and LXRs/RXRs signaling. The findings shed light on Brucella's complex mechanisms to undermine host defenses and underscore the need for further investigation into therapeutic targets to combat brucellosis.

2024-09-30 | E-MTAB-13990 | biostudies-arrayexpress

Brucella abortus

Project description:Brucella abortus Metagenome

| PRJNA895243 | ENA