GEO DataSets

Analysis of Pseudomonas aeruginosa PAO1 or Type III secretion system (TTSS), rhamnolipid synthesis double mutant strain exposed to cultured airway epithelia. TTSS is a virulence factor in acute infections. Strains from chronic infections express decreased levels of TTSS or lack a functional TTSS.

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array, count, 2 agent, 2 strain sets

Platform:

GPL84

Series:

GSE4614

8 Samples

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(Submitter supplied) To gain insights into the initial phases of P. aeruginosa infections and to identify P. aeruginosa genes regulated in response to respiratory epithelia we exposed P. aeruginosa to cultured primary differentiated human airway epithelia. We used a P. aeruginosa strain (PAO1) that causes acute damage to the epithelia and a mutant (PAOSC11) with defects in Type III secretion and in rhamnolipid synthesis. more...

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Dataset:

GDS2502

Platform:

GPL84

8 Samples

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(Submitter supplied) This series contains 5 groups of U133A arrays with targets from Calu-3 cell line post-infection with P aeruginosa strains. Calu-3 human lung epithelial cells were seeded onto 6-well plates and grown to about 80% confluency. Epithelial monolayers were infected with 108 CFUs per ml of each bacterial strain for 60 min and then washed extensively with phosphate-buffered saline. The cultures were subsequently incubated in fresh RPMI 1640 medium supplemented with 10% fetal bovine serum and 100 µg/ml gentamicin. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS858

Platform:

GPL96

19 Samples

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Comparison of lung epithelial Calu-3 cells infected with the mucoid alginate-producing FRD1 strain to those infected with the isogenic motile flagellin-producing FRD440 strain of Pseudomonas aeruginosa. Mucoid and motile strains are associated with chronic and acute lung infections, respectively.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 4 genotype/variation, 5 infection sets

Platform:

GPL96

Series:

GSE923

19 Samples

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(Submitter supplied) Global expression profiling of airway epithelial cells infected with Pseudomonas aeruginosa and the rsmA mutant. Recent work in our laboratory investigated the impact of RsmA on a number of airway epithelial cell phenotypes including actin depolymerization, cytotoxicity and invasion. These cellular phenotypes were influenced by the positive effect of RsmA on the expression of the TTSS in P. aeruginosa (Mulcahy et al. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2287

Platform:

GPL96

6 Samples

Download data: CEL, EXP

Analysis of airway epithelial cells infected with Pseudomonas aeruginosa PAO1 or the rsmA mutant. RsmA is a small RNA-binding protein that plays a role in the regulation of virulence-related genes in P. aeruginosa. Results provide insight into the influence of RsmA-regulated functions on the host.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 3 genotype/variation, 2 infection sets

Platform:

GPL96

Series:

GSE4485

6 Samples

Download data: CEL, EXP

(Submitter supplied) In the present study, we employed Affymetrix Pseudomonas aeruginosa GeneChip arrays to investigate the dynamics of global gene expression profiles during the cellular response of Pseudomonas aeruginosa to ortho-phenylphenol, which involved initial growth inhibition and metabolism. Keywords: Time course

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Platform:

GPL84

12 Samples

Download data: CEL

(Submitter supplied) Pseudomonas aeruginosa strains PAHM4 and PAO1 were grown at 37C on LB and RNA was hybridized on the Affymetrix P. aeruginosa chip to compare transcript differences from a BQ isolate to a well characterized wound isolate.

Organism:

Pseudomonas aeruginosa; Pseudomonas aeruginosa PAO1; Pseudomonas aeruginosa PAHM4

Type:

Expression profiling by array

Platform:

GPL84

6 Samples

Download data: CEL

(Submitter supplied) The gene PA2384 in Pseudomonas aeruginosa PAO1, annotated originally as unknown function, has been previously shown to be dramatically responsive to iron limitation. In the present study, PA2384 is shown by bioinformatics analysis to have a weak similarity to the N-termini DNA binding domain of fur, a well-known ferric uptake regulator. To experimentally investigate the function of PA2384 P. aeruginosa PAO1 recombinant (pUCP20::PA2384) overexpressing PA2384 and PA2384 knock-out mutant PAO1-23844 are constructed and studied. more...

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Dataset:

GDS1910

Platform:

GPL84

12 Samples

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Analysis of PAO1 strain PA2384 null mutant grown under iron-limiting conditions. PA2384 is responsive to iron limitation and is weakly similar to the ferric uptake regulator fur. RNA extracted from cells at various stages of growth. Results provide insight into the function of PA2384.

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array, count, 2 genotype/variation, 3 other sets

Platform:

GPL84

Series:

GSE2885

12 Samples

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(Submitter supplied) Wound infections are traditionally thought to occur when microbial burden exceeds the innate clearance capacity of host immune system. Here we introduce the idea that the wound environment itself plays a significant contributory role to wound infection. We developed a clinically relevant murine model of soft tissue infection to explore the role of activation of microbial virulence in response to tissue factors as a mechanism by which pathogenic bacteria cause wound infections. more...

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Platform:

GPL84

6 Samples

Download data: CEL

(Submitter supplied) The bacterial transcription factor RpoN regulates an extensive network of genes whose products are involved in diverse biological functions. We constructed a small peptide termed the RpoN molecular roadblock, which binds to and blocks transcription from RpoN promoters. This RpoN molecular roadblock can be used in any bacterium to obtain information on the RpoN regulon. We expressed the RpoN molecular roadblock in P. more...

Organism:

Pseudomonas aeruginosa; Pseudomonas aeruginosa PAO1

Type:

Expression profiling by array

Platform:

GPL84

16 Samples

Download data: CEL

(Submitter supplied) Although Pseudomonas aeruginosa is an opportunistic pathogen that does not often naturally infect alternate hosts such as plants, the plant-P. aeruginosa model has become a widely recognized system for identifying new virulence determinants and studying pathogenesis of this organism. Here we examine how both host factors and P. aeruginosa PAO1 gene expression are affected in planta after infiltration into incompatible and compatible cultivars of tobacco (Nicotiana tabacum L.) Nicotiana tabacum has a resistance gene (N) against tobacco mosaic virus; and although resistance to PAO1 infection correlated to the presence of a dominant N-gene, our data suggests that it is not a factor in resistance against Pseudomonas. more...

Organism:

Pseudomonas aeruginosa PAO1; Pseudomonas aeruginosa

Type:

Expression profiling by array

Platform:

GPL84

6 Samples

Download data: CEL

(Submitter supplied) Airway epithelium is the initial point of host-pathogen interaction in Pseudomonas aeruginosa infection, an important pathogen in cystic fibrosis and nosocomial pneumonia. We used global gene expression analysis to determine airway epithelial transcriptional responses dependent on matrilysin (MMP-7) and stromelysin-2 (MMP-10), two matrix metalloproteinases induced by acute P. aeruginosa pulmonary infection. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS3040

Platform:

GPL1261

25 Samples

Download data: CEL

Analysis of cultured airway epithelial cells (AEC) from matrix metalloproteinase (MMP) -7 or -10 mutants after P. aeruginosa infection. MMP-7 and MMP-10 are induced by acute P. aeruginosa pulmonary infection. Results provide insight into the roles of the MMPs in the host response to Pseudomonas.

Organism:

Mus musculus

Type:

Expression profiling by array, transformed count, 3 genotype/variation, 2 infection, 3 time sets

Platform:

GPL1261

Series:

GSE7957

25 Samples

Download data: CEL

(Submitter supplied) Expression data from airway brush biopsy samples, differentiated primary cultures of human airway epithelia, CaLu3 cultures at the air liquid interface, and primary cultures of human airway epithelia submerged in nutrient media Organotypic cultures of primary human airway epithelial cells have been used to investigate the morphology, ion and fluid transport, innate immunity, transcytosis, infection, inflammation, signaling, cilia and repair functions of this complex tissue. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10097

50 Samples

Download data: CEL