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Actinobacillus pleuropneumoniae serovar 1 str. 4074

ABSTRACT: Causes a fibrinous and necrotizing pleuropneumonia

PROVIDER: PRJNA198 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	AACK01.dat.gz	Other
	AACK01.fasta.gz	Fasta.gz
	AACK01.master.dat	Other
	AACK01.dat.gz	Other

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Expression data of Actinobacillus pleuropneumoniae 4074 and the ΔluxS mutant of Actinobacillus pleuropneumoniae 4074

Project description:LuxS is an enzyme involved in the activated methyl cycle and the by-product autoinducer 2 (AI-2) was a quorum sensing signal in some species. In our previous study, the functional LuxS in AI-2 production was verified in the porcine respiratory pathogen Actinobacillus pleuropneumoniae. Enhanced biofilm formation and reduced virulence were observed in the luxS mutant. To comprehensively understand the luxS function, in this study, the transcriptional profiles were compared between the A. pleuropneumoniae luxS mutant and its parental strain in four different growth phases using microarray. Many genes associated with infection were differentially expressed. The biofilm formation genes pgaABC in the luxS mutant were up-regulated in early exponential phase, while 8 genes associated with adhesion were down-regulated in late exponential phase. A group of genes involved in iron acquisition and metabolism were regulated in four growth phases. Further investigations on these virulence traits demonstrated that the luxS mutant showed enhanced biofilm formation and reduced adhesion ability and these effects were not due to lack of AI-2. But AI-2 could increase biofilm formation and adhesion of A. pleuropneumoniae independent of LuxS. Growth under iron restricted condition could be controlled by LuxS through AI-2 production. These results revealed pleiotropic roles of LuxS and AI-2 on A. pleuropneumoniae virulence traits.

2011-11-09 | GSE19056 | GEO

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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.

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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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Actinobacillus pleuropneumoniae serovar 1 str. 4074

Project description:Expression data of Actinobacillus pleuropneumoniae 4074 under aerobic and anaerobic environment

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Actinobacillus pleuropneumoniae serovar 1 str. 4074

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