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ABSTRACT: Transcriptomic analysis of Listeria monocytogenes under anaerobic conditions at pH 7.5

PROVIDER: PRJNA706703 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13858765_1.fastq.gz	Fastqsanger.gz
	SRR13858765_2.fastq.gz	Fastqsanger.gz
	SRR13858766_1.fastq.gz	Fastqsanger.gz
	SRR13858766_2.fastq.gz	Fastqsanger.gz
	SRR13858767_1.fastq.gz	Fastqsanger.gz

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Project description:Transcriptomic analysis of Listeria monocytogenes in response to bile under anaerobic conditions at pH 7.5

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Project description:Transcriptomic analysis of Listeria monocytogenes in response to bile under aerobic conditions at pH 7.5

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Project description:Transcriptomic analysis of Listeria monocytogenes in under anaerobic conditions at pH 5.5

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Project description:Transcriptomic analysis of Listeria monocytogenes in response to bile under anaerobic conditions at pH 5.5

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Listeria monocytogenes J0161 shows altered resistance characteristics when grown at low temperature and under anaerobic conditions.

Project description:Listeria monocytogenes is a food-borne pathogen and the causative agent of listeriosis, an infection which typically arises through the consumption of contaminated foodstuffs. L. monocytogenes is a psychotrophic and facultatively anaerobic; properties which permit growth under refrigeration conditions and within modified atmosphere packaging. Through transcriptional changes L. monocytogenes is able to mount adaptive responses against stressors. Such responses typically cross protect against subsequent stresses.

2016-12-30 | GSE84879 | GEO

Project description:Transcriptomic analysis of Listeria monocytogenes aerobic conditions at pH 5.5

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The effect of oxygen on bile resistance in L. monocytogenes

Project description:Listeria monocytogenes is a gram-positive, facultative anaerobe food-borne pathogen that is the causative agent of listeriosis. Upon ingestion, L. monocytogenes is subjected to a variety of non-specific host defenses such as bile. The main component of bile is bile salts which is known to be bactericidal through inducing DNA damage, oxidative damage, membrane instability, and protein misfolding. Previous studies have focused mainly on aerobic conditions; however the human GI tract is an environment ranging from microaerophilic to anaerobic. The bile salt hydrolase, an enzyme known to reduce toxicity of bile through hydrolysis, has been shown to have an increase in activity under anaerobic conditions. Therefore, the purpose of this study was to determine the effect of oxygen on bile resistance and determine the bile specific proteome that is responsible for this. To do this, we performed survival assays on virulent strains: F2365, 10403S, EGDe and avirulent strain, HCC23. Results showed an increase in viability for all virulent strains when exposed to porcine bile under anaerobic conditions. Interestingly, an increase in resistance was seen in HCC23 only under aerobic conditions. We then used a total proteomic analysis approach to compare the bile specific proteome under both aerobic and anaerobic conditions. Results showed many difference between all strains including an increase in abundance of proteins associated with stress responses, repair, cell morphology, and cell division under anaerobic conditions. Response to bile salt stress showed to be strain dependent. This study not only identified proteins responsible for L. monocytogenes bile resistance but also differerences between aerobic and anaerobic conditions thus suggesting that oxygen availability is not only a stressor but in some way providing assistance to overcoming bile salts.

2017-05-03 | PXD002243 | Pride

Project description:Transcriptomic analysis of Listeria monocytogenes in response to bile under aerobic conditions at pH 5.5

| PRJNA706438 | ENA

Project description:Transcriptomic analysis of Listeria monocytogenes in response to bile under aerobic and anaerobic conditions

| PRJNA706425 | ENA

Transcriptomic response of the auxotrophic Mycobacterium avium subspecies paratuberculosis (MAP) leuD mutant under environmental stresses

Project description:Comparing the transcriptomic responses between the Mycobacterium avium subspecies paratuberculosis (MAP) leuD mutant with the parent strain K-10 under different environmental stresses: nutrition, temperature, anaerobic conditions, high- and low- pH conditions.

2013-02-16 | GSE36053 | GEO

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