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Genome wide transcriptional portrait of Actinobacillus pleuropneumoniae during invasive disease reveals new strategies for survival and persistence in the host

ABSTRACT: The transcriptional profile of the porcine lung pathogen, Actinobacillus pleuropneumoniae, was monitored during the acute phase of infection in its natural host. Bacterial expression profiles of A. pleuropneumoniae isolated from lung lesions of 25 infected pigs were compared in samples taken 6, 12, 24 and 48 hours post infection.

ORGANISM(S): Actinobacillus pleuropneumoniae

PROVIDER: GSE33999 | GEO | 2012/12/01

SECONDARY ACCESSION(S): PRJNA150573

REPOSITORIES: GEO

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Genome wide transcriptional portrait of Actinobacillus pleuropneumoniae during invasive disease reveals new strategies for survival and persistence in the host

Project description:The transcriptional profile of the porcine lung pathogen, Actinobacillus pleuropneumoniae, was monitored during the acute phase of infection in its natural host. Bacterial expression profiles of A. pleuropneumoniae isolated from lung lesions of 25 infected pigs were compared in samples taken 6, 12, 24 and 48 hours post infection. A 84 chip study using total RNA recovered from A. pleuropneumoniae serotype 2 (4226) and serotype 6 (7712640) isolated from infected pig lung tissue during the first 48 of infection. Samples were taken 6, 12, 24 and 48 hours post infection, respectively. Before hybridization the samples were enriched for bacterial RNA and submitted to linear amplification. Each chip measures the expression level of 4,876 target genes from A. pleuropneumoniae with each gene covered by an average of 26.7 probes. Three biological replicates per sample. Microarray data from 3 pigs (no. 39, no. 43 and no. 72) were omitted from the final analysis due to poor signal intensity. A total of 75 microarrays were included in the final analysis.

2012-12-01 | E-GEOD-33999 | biostudies-arrayexpress

Actinobacillus pleuropneumoniae during a natural infection in pigs

Project description:Actinobacillus pleuropneumoniae is the etiological agent of porcine pleuropneumonia, a respiratory disease which causes great economic losses worldwide. Many virulence factors are involved in the pathogenesis, namely capsular polysaccharides, RTX toxins, LPS and many iron acquisition systems. In order to identify genes that are expressed in vivo during a natural infection, we undertook transcript profiling experiments with an A. pleuropneumoniae DNA microarray, after recovery of bacterial mRNAs from serotype 5b-infected porcine lungs. Comparative Genomic Hybridizations between Actinobacillus pleuropneumoniae serotype 5b strain L20 (ref) and serotype 5b fresh field isolate 896-07, recovered from infected pig lung tissues following natural acute infection. Two condition transcript profiling experiments : infectious 5b field strain isolated directly from lungs of naturally deceased pigs after acute infection vs infectious 5b field strain grown in BHI broth to an OD600 of 0.300.

2010-05-05 | E-GEOD-15911 | biostudies-arrayexpress

Transcript profiling of Actinobacillus pleuropneumoniae in BALF

Project description:Actinobacillus pleuropneumoniae is the etiologic agent of contagious pleuropneumonia, an economically important disease of commercially reared swine throughout the world. To cause this disease, A. pleuropneumoniae must rapidly overcome porcine pulmonary innate immune defenses. Since bronchoalveolar fluid (BALF) contains many of the innate immune components found in the lung, we examined the gene expression of a virulent serovar 1 strain of A. pleuropneumoniae after exposure to concentrated BALF. This experiment was also carried out with a malT mutant of the same strain.

2009-01-06 | GSE13006 | GEO

Actinobacillus pleuropneumoniae BHI vs Koromycin

Project description:Actinobacillus pleuropneumoniae is the etiologic agent of contagious pleuropneumonia, an economically important disease of commercially reared swine throughout the world. To cause this disease, A. pleuropneumoniae must rapidly overcome porcine pulmonary innate immune defenses. Effects of koromycin, an antimicrobial agent that acts as an noncompetitive inhibitor of the interaction of NQR with its quinone substrate, on the transcriptome of A. pleuropneumoniae was investigated.

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Transcriptome of 6h static biofilm Actinobacillus pleuropneumoniae

Project description:The transcriptome of Actinobacillus pleuropneumoniae biofilms was compared to the transcriptome of planktonic bacteria

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Transcriptome of 4h static biofilm Actinobacillus pleuropneumoniae

Project description:The transcriptome of Actinobacillus pleuropneumoniae biofilms was compared to the transcriptome of planktonic bacteria

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Actinobacillus pleuropneumoniae during a natural infection in pigs

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Actinobacillus pleuropneumoniae

Project description:Actinobacillus pleuropneumoniae Assembly

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Actinobacillus pleuropneumoniae

Project description:Actinobacillus pleuropneumoniae during a natural infection in pigs

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Genome-wide screening and characterization of Actinobacillus pleuropneumoniae and its ciprofloxacin-resistant mutants

Project description:Understanding constraints which shape antibiotic resistance is key for predicting and controlling drug resistance. Here, we performed high-throughput laboratory evolution of Actinobacillus pleuropneumoniae and its ciprofloxacin resistance-inducing derivatives.This study aims to explore the mechanism of acquired ciprofloxacin resistance in Actinobacillus pleuropneumoniae.

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