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Pseudomonas aeruginosa strain:ST357 | isolate:Human Fluid

ABSTRACT: Pseudomonas aeruginosa strain:ST357 | isolate:Human Fluid Genome sequencing

PROVIDER: PRJNA1194551 | ENA |

REPOSITORIES: ENA

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A Cystic Fibrosis Pseudomonas aeruginosa Isolate Specialised to Catabolise Nucleic Acids

Project description:Purpose: Pseudomonas aeruginosa is a major cause of morbidity and mortality in patients with cystic fibrosis (CF). We provide an insight to the DNA auxotrophy of P. aeruginosa PASS4 isolate. Better understanding of P. aeruginosa adaptations in the CF lung environment can have a great impact in the development of specialised treatment regimes aimed at the eradications of P. aeruginosa infections. Methods: P. aeruginosa strains PAO1 and PASS4 were grown in minimal medium with either L-Asparagine or DNA as a carbon source, in biological triplicates. RNA was extracted and sequenced on Illumina HiSeq 1000 platform. The sequence reads that passed quality filters were analyzed using EdgePro and DESeq packages, as well as the Rockhopper tool. Results: We mapped > 10 million paired sequence reads per sample to the genome of P. aeruginosa PAO1 and identified a total of 576 genes differentially expressed by PASS4 when grown in DNA (P value < 0.01, log2 fold-change 1< to < -1), with 322 genes upregulated and 254 genes downregulated. There were a total of 423 genes differentially expressed by PAO1 when grown in DNA (P value < 0.01, log2 fold-change 1< to <-1), with 359 genes upregulated and 64 genes downregulated . A total of 129 transcripts displayed similar expression patterns in both organisms, with 112 being upregulated and 17 down-regulated. Conclusions: Our study identified that P. aeruginosa PASS4 was a purine auxotroph. Purine auxotropy may represent a viable microbial strategy for adaptation to DNA rich environments such as the CF lung.

2019-06-16 | GSE100287 | GEO

Pseudomonas aeruginosa strain:human | isolate:human

Project description:Pseudomonas aeruginosa strain:human | isolate:human Genome sequencing

| PRJNA1180939 | ENA

Proteomic characterization of a hyper-virulent isolate of Pseudomonas aeruginosa

Project description:Taxonomic outliers of Pseudomonas aeruginosa recently emerged as infectious for humans. Here we present the first analysis of a hyper-virulent isolate that cause hemorrhagic pneumonia. We demonstrated that, in two sequential clones CLJ1 and CLJ3 recovered from a patient with chronic obstructive pulmonary disease undergoing antibiotic therapy, insertion of a mobile genetic element into the P. aeruginosa chromosome affected major virulence-associated phenotypes and led to increased resistance to antibiotics used to treat the patient. Our work reveals insertion sequences as major players in enhancing the pathogenic potential of a P. aeruginosa taxonomic outlier by modulating both the virulence and resistance to antimicrobials. This also explains the ability of this bacterium to adapt to an infected host and cause a serious disease.

2019-03-18 | PXD011105 | Pride

Pseudomonas aeruginosa isolate:Pseudomonas aeruginosa HN41

Project description:Pseudomonas aeruginosa isolate:Pseudomonas aeruginosa HN41 Genome sequencing

| PRJNA1180259 | ENA

Pseudomonas aeruginosa strain:U804 | isolate:Human urine isolate

Project description:Pseudomonas aeruginosa strain:U804 | isolate:Human urine isolate Genome sequencing

| PRJNA1102609 | ENA

Pseudomonas aeruginosa isolate:Pseudomonas aeruginosa HS17-127

Project description:Pseudomonas aeruginosa isolate:Pseudomonas aeruginosa HS17-127 Genome sequencing

| PRJNA661977 | ENA

The Influence of Human Respiratory Epithelia on Pseudomonas aeruginosa Gene Expression

Project description: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. The mutant did not cause rapid damage to epithelia as did the wildtype. Keywords: Pseudomonas aeruginosa and respiratory epithelia

2006-12-19 | GSE4614 | GEO

Effects of arsenic and Pseudomonas aeruginosa infection on gene expression in human airway epithelial cells

Project description:Purpose: To determine effects of arsenic on gene expression in polarized primary human bronchial epithelial (HBE) cells and impact on transcriptional response to Pseudomonas aeruginosa infection Methods: mRNA profiles of HBE cells from 6 donors exposed to 0, 5, 10 or 50 ug/L total arsenic +/- Pseudomonas aeruginosa (48 samples) were generated using Illumina sequencing, aligned in CLC Genomics workbench and analyzed for DE in EdgeR Findings: 20-30 million reads were mapped per sample and transcripts were identifed that were significantly differentially expressed in response to arsenic and Pseudomonas aeruginosa

2017-06-26 | GSE97036 | GEO

Pseudomonas aeruginosa PAO1 response to sphingomyelin

Project description:Analysis of Pseudomonas aeruginosa PAO1 treated with 200 µM sphingomyelin. Results provide insight into the response to sphingomyelin in P. aeruginosa.

2017-02-12 | GSE83078 | GEO

Zinc acquisition in Pseudomonas aeruginosa

Project description:This study addresses the impact of zinc limitation on the opportunistic human pathogen, Pseudomonas aeruginosa. Zinc limitation was assessed in the P. aeruginosa PAO1 strain using an isogenic deletion mutant lacking the periplasmic, zinc solute-binding protein, znuA (PA5498). ZnuA delivers bound zinc to its cognate ABC transporter, ZnuBC, for import into the cytoplasm. Our transcriptional analyses revealed P. aeruginosa to possess a multitude of zinc acquisition mechanisms, each of which were highly up-regulated in the zinc-deficient znuA mutant strain. P. aeruginosa also utilized zinc-independent paralogues of zinc-dependent genes to maintain cellular function under zinc limitation. Together, these data reveal the complex transcriptional response and versatility of P. aeruginosa to zinc depletion.

2017-01-01 | GSE60177 | GEO

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