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ABSTRACT: Transcriptomic profiles of Vibrio parahaemolyticus during biofilm formation

PROVIDER: PRJNA874225 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21290570_1.fastq.gz	Fastqsanger.gz
	SRR21290570_2.fastq.gz	Fastqsanger.gz
	SRR21290571_1.fastq.gz	Fastqsanger.gz
	SRR21290571_2.fastq.gz	Fastqsanger.gz
	SRR21290572_1.fastq.gz	Fastqsanger.gz

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Project description:Vibrio parahaemolyticus for biofilm formation

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The mode of action of antimicrobial agents albofungins in eradicating penicillins and cephalosporins-resistant Vibrio parahaemolyticus biofilm

Project description:In the present study, we investigated albofungin’s antibacterial, biofilm inhibition, and eradication activity as well as its potential mode of action against drug-resistant Vibrio parahaemolyticus.

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Bacteriostatic effects of benzyl isothiocyanate on Vibrio parahaemolyticus: Transcriptomic analysis and morphological verification

Project description:We investigated antibacterial activities of benzyl isothiocyanate (BITC) against V. parahaemolyticus by transcriptomic analysis and morphological verification. Treatment with 1/8MIC BITC resulted in 234 up-regulated genes and 273 down-regulated genes. In V. parahaemolyticus, we selected six genes that were significantly down-regulated from the transcriptome results and verified them using quantitative Real-time Polymerase Chain Reaction (qRT-PCR). The verification experiments indicated that the relative expressions of the six virulence genes VP0820, VP0548, VP2233, VPA2362, fliA and fliG were only 31.0%, 31.1%, 55.8%, 57.0%, 75.3%, and 79.9% of the control group, respectively. Among them, VP2233, fliA and fliG are related to flagella, and VP2362 can regulate a protein related to biofilm formation. From the morphological aspect, we verified that under the action of 1/8 MIC BITC, the swimming diffusion diameter of V. parahaemolyticus was significantly reduced by 14.9%, and biofilm formation was significantly inhibited. These results indicate that 1/8 MIC BITC can reduce the pathogenicity of V. parahaemolyticus by inhibiting virulence gene expression related to flagella and biofilm, which is helpful for further understanding of bacteriostatic mechanism of BITC on V. parahaemolyticus and other food-borne pathogens.

2020-06-18 | GSE152671 | GEO

Identification of differentially expressed host microRNAs that respond to Vibrio parahaemolyticus infection in the pacific white shrimp Litopenaeus vannamei.

Project description:In order to gain a better understanding of the impact of Vibrio parahaemolyticus infection on genetic regulation of Litopenaeus vannamei,we performed a miRNA-seq analysis in the hepatopancreas of Litopenaeus vannamei challenged with Vibrio parahaemolyticus, using the Illumina HiSeq 2500 platform.

2020-06-18 | GSE107696 | GEO

The scr circuit in Vibrio parahaemolyticus: output targets and transcriptional regulation by a c-di-GMP responsive protein

Project description:Vibrio parahaemolyticus scr genes modulate expression of gene sets pertinent to swarming and biofilm formation. They do so by affecting the level of the second messenger c-di-GMP. Here we explore the extent of this regulation by comparing the transcriptomes of a scrABC mutant and its wild-type parental strain. The scope of transcriptional effects modulated by c-di-GMP includes ~100 genes that are positively and negatively regulated. An elevated cellular level of c-di-GMP represses the surface sensing regulon including the genes encoding the lateral flagellar and type three secretion systems while inducing expression of genes encoding cell surface molecules and capsular polysaccharide. Expression of a few transcriptional regulators was also affected, and here we describe the role of one, CpsQ. CpsQ is one of four V. parahaemolyticus homologs in the CsgD/VpsT family of regulators, members of which have been implicated in c-di-GMP signaling. Mutations in cpsQ, like defects in another previously identified capsule regulator, cpsR, suppress the sticky phenotype of scr mutants. By using a combination of mutant and reporter analyses in Vibrio and E. coli, CpsQ is shown to be the direct positive regulator of cpsA transcription and its cpsA-activating ability is found to be responsive to the cellular level of c-di-GMP. Unexpectedly, we find that a low level of this nucleotide diminishes the stability of CpsQ. The molecular interplay in this signaling circuit is further defined by demonstrating that CpsQ is epistatic to CpsS, a negative regulator of capsule. CpsR activates cpsQ, and CpsQ can also regulate its own transcription. Wildtype Vibrio parahaemolyticus (LM5674) and scrABC mutant (LM6567) were grown on rich mediim agar plates and gene expression profiles were compared.

2011-12-31 | E-GEOD-30508 | biostudies-arrayexpress

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Project description:The PTS system is a central regulatory cascade in bacteria. Here, Vibrio cholerae PTS role was investagated during biofilm formation

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Transcriptome analysis of pacific white shrimp (Litopenaeus vannamei) hepatopancreas in response to Vibrio parahaemolyticus inoculation

Project description:In order to gain a better understanding of the impact of Vibrio parahaemolyticus infection on genetic regulation of Litopenaeus vannamei,we performed a transcriptome analysis in the hepatopancreas of Litopenaeus vannamei challenged with Vibrio parahaemolyticus, using the Illumina HiSeq 2500 platform.

2020-06-18 | GSE107697 | GEO

Insight into Vibrio parahaemolyticus CHN25 response to artificial gastric fluid stress by transcriptomic analysis

Project description:Vibrio parahaemolyticus is the causative agent of food-borne gastroenteritis disease. Once consumed, human acid gastric fluid is perhaps one of the most important environmental stresses imposed on the bacterium. Herein, for the first time, we investigated Vibrio parahaemolyticus CHN25 response to artificial gastric fluid (AGF) stress by transcriptomic analysis. The bacterium at logarithmic growth phase (LGP) displayed lower survival rates than that at stationary growth phase (SGP) under a sub-lethal acid condition (pH 4.9). Transcriptome data revealed that 11.6% of the expressed genes in Vibrio parahaemolyticus CHN25 was up-regulated in LGP cells after exposed to AGF (pH 4.9) for 30 min, including those involved in sugar transport, nitrogen metabolism, energy production and protein biosynthesis, whereas 14.0% of the genes was down-regulated, such as ABC transporter and flagellar biosynthesis genes. In contrast, the AGF stress only elicited 3.4% of the genes from SGP cells, the majority of which were attenuated in expression. Moreover, the number of expressed regulator genes was also substantially reduced in SGP cells. Comparison of transcriptome profiles further revealed forty-one growth-phase independent genes in the AGF stress, however, half of which displayed distinct expression features between the two growth phases. Vibrio parahaemolyticus seemed to have evolved a number of molecular strategies for coping with the acid stress. The data here will facilitate future studies for environmental stresses and pathogenicity of the leading food-borne pathogen worldwide. When V.parahemolyticus CHN25 grown to log phase and stationary phase at 37°C in TSB-3% NaCl, different cultures were subsequently exposed to artificial gastric fluid at 37°C for 30 min. Two independent experiments were performed at each phase for microarray expreriments.

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Insight into Vibrio parahaemolyticus CHN25 response to artificial gastric fluid stress by transcriptomic analysis

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ChIP-seq identified the regulation of genes by the quorum-sensing regulator OpaR in Vibrio parahaemolyticus

Project description:We report that ChIP-seq analyses of the quorum-sensing regulator OpaR at late-log and stationary phase in Vibrio parahaemolyticus

2020-10-27 | GSE122479 | GEO

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