Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

The effect of hfq on global gene expression and virulence in Neisseria gonorrhoeae

ABSTRACT: Hfq is an RNA chaperone, which functions as a pleiotropic regulator for RNA metabolism in bacteria. To characterize the role of Hfq in pathogenicity of Neisseria gonorrhoeae we generated a N. gonorrhoeae hfq mutant, MS11hfq.Transcriptional analysis using a custom-made N. gonorrhoeae microarray revealed that 369 open reading frames were differentially regulated in MS11hfq compared to the wild-type (wt) strain (202 were upregulated, 167 were downregulated).

ORGANISM(S): Neisseria gonorrhoeae

PROVIDER: GSE16046 | GEO | 2009/09/15

SECONDARY ACCESSION(S): PRJNA115519

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

The effect of hfq on global gene expression and virulence in Neisseria gonorrhoeae

Project description:Hfq is an RNA chaperone, which functions as a pleiotropic regulator for RNA metabolism in bacteria. To characterize the role of Hfq in pathogenicity of Neisseria gonorrhoeae we generated a N. gonorrhoeae hfq mutant, MS11hfq.Transcriptional analysis using a custom-made N. gonorrhoeae microarray revealed that 369 open reading frames were differentially regulated in MS11hfq compared to the wild-type (wt) strain (202 were upregulated, 167 were downregulated). Arrays were generated as custom 8x15 K microarrays (Agilent Technologies) covering all open reading frames (ORFs) from N. gonorrhoeae strain FA1090 (accession number AE004969) supplemented with all ORFs from the gonoccoccal genetic island of strain MS11 (accession number AY803022) by 6 specific 60-mer oligonucleotides per gene on average. Microarray analysis was performed as dual-color hybridization with dye-reversal color-swaps as technical replicates for Cy-dye specific effect compensation and three independent biological replicates. Microarray features were extracted with the FE 9.5.3.1 software from Agilent Technologies using the GE2-v4_95_Feb07 protocol with default settings. Data were loaded into Resolver (Rosetta Biosoftware) using the MAGE-ML loader and analyzed for differential gene expression. Ratio profiles were combined into ratio experiments and regulated genes were identified with a threshold of 1.75 fold-change and anti-correlation of the color-swapped dye reversals, rendering the analysis highly stringent and robust with P values <0.0001 of the results.

2010-06-23 | E-GEOD-16046 | biostudies-arrayexpress

Transcriptomics of Neisseria gonorrhoeae

Project description:The overall goals and objectives of this study are to investigate the transcriptomics of Neisseria gonorrhoeae using RNA-seq. This work will look at gene expression, start points of transcription, transcriptional termination, and differences between these in different conditions and between strains and growing cultures over time.

2016-05-24 | GSE73032 | GEO

Dual RNA-seq of Neisseria gonorrhoeae and human neutrophils

Project description:Deep sequencing of cDNA from Neisseria gonorrhoeae bacteria and human neutrophils, alone and after coincubation.

2018-12-07 | GSE123434 | GEO

Comparative genomic hybridization of one Neisseria cinerea, two Neisseria lactamica, two Neisseria gonorrhoeae, and 48 Neisseria meningitidis isolates

Project description:Microarray comparative genome hybridization (mCGH) data was collected from one Neisseria cinerea, two Neisseria lactamica, two Neisseria gonorrhoeae, and 48 Neisseria meningitidis isolates. For N. meningitidis, these isolates are from diverse clonal complexes, invasive and carriage strains, and all major serogroups. The microarray platform represented N. meningitidis strains MC58, Z2491, and FAM18 and N. gonorrhoeae FA1090.

2007-04-04 | E-TIGR-129 | biostudies-arrayexpress

The pilus retraction protein PilT has a global influence on the transcriptome of Neisseria gonorrhoeae

Project description:The ATPase protein PilT mediates retraction of type IV pili. We performed microarrays comparing the transcription profile of the Neisseria gonorrhoeae wild-type strain MS11 and its isogenic pilT mutant. 63 open reading frames were found to be differentially regulated in the pilT mutant. Most interestingly, a loss of function mutation in pilT leads to an upregulation of pilE, which encodes the pilus subunit protein.

2008-09-01 | GSE12258 | GEO

Transcriptional Profiling of Neisseria gonorrhoeae biofilm

Project description:Neisseria gonorrhoeae, the etiologic agent of gonorrhea, is frequently asymptomatic in women, often leading to chronic infections. One factor contributing to this may be biofilm formation. N. gonorrhoeae can form biofilms over glass and plastic surfaces. There is also evidence that biofilm formation may occur during natural cervical infection. To further study the mechanism of this biofilm formation, transcriptional profiles of N. gonorrhoeae biofilm were compared to planktonic profiles. Biofilm RNA was extracted from N. gonorrhoeae 1291 grown for 48 hours in continuous flow chambers over glass. Planktonic RNA was extracted from the biofilm runoff. When biofilm was compared to planktonic growth, 3.8 % of the genome was differentially regulated. Genes highly up-regulated in biofilm included aniA, norB, and ccp, which play critical roles in anaerobic metabolism and oxidative stress tolerance. Down-regulated genes included the nuo gene cluster (NADH dehydrogenase) and the cytochrome bcI complex, which are involved in aerobic respiration and are thought to contribute to endogenous oxidative stress. Furthermore, we determined that aniA, ccp, and norB insertional mutants are attenuated for biofilm formation over glass and transformed human cervical epithelial cells (THCEC). This data suggests that biofilm formation could minimize oxidative stress during cervical infection and allow N. gonorrhoeae to maintain a nitric oxide steady state that may be anti-inflammatory.

2009-02-27 | GSE14815 | GEO

Characterization of the Neisseria gonorrhoeae Iron and Fur Regulatory Network

Project description:In this study wild-type, fur mutant, and complemented fur mutant strains of the human pathogen Neisseria gonorrhoeae F62 were grown under high (100 uM iron) or low (100 uM desferal) iron conditions to identify genes whose expression was regulated by iron and/or Fur

2016-06-09 | GSE83138 | GEO

Comparative genomic hybridization of 33 clinical isolates of Neisseria gonorrhoeae

Project description:Comparison of the gene complements of 33 clinical isolates of Neisseria gonorrhoeae.

2006-12-13 | E-MEXP-514 | biostudies-arrayexpress

Neisseria gonorrhoeae

Project description:The effect of hfq on global gene expression and virulence in Neisseria gonorrhoeae

| PRJNA115519 | ENA

Transcriptional analysis of the Neisseria gonorrhoeae Fur regulon

Project description:In Neisseria gonorrhoeae, Fur (ferric uptake regulator) protein regulates iron homeostasis gene expression through binding to conserved sequences in promoters of iron-responsive genes. We have expanded the gonococcal Fur regulon using a custom microarray to monitor iron-responsive gene expression throughout the growth curve combined with a genome-wide in silico analysis to predict Fur boxes (FB), and in vivo FuRTA assays to detect genes able to bind Fur. Keywords: time course: (1hr ,2hr, 3hr, 4hr)

2010-01-01 | GSE16352 | 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