Vibrio parahaemolyticus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA18605 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Major cause of seafood-associated food poisoning
| PRJNA18601 | ENA
Project description:Major cause of seafood-associated food poisoning
| PRJNA360 | ENA
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.
2015-06-30 | GSE63167 | GEO
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.
2015-06-30 | E-GEOD-63167 | biostudies-arrayexpress
Project description:The lysine acetylation of proteins is a major post-translational modification that plays an important regulatory role in almost every aspect of cells, both eukaryotes and prokaryotes. Vibrio parahaemolyticus, a model marine bacterium, is a worldwide cause of bacterial seafood-borne illness. Here, we conducted the first lysine acetylome in the bacterium through combination of highly sensitive immune-affinity purification and high-resolution LC-MS/MS. Overall, we identified 1413 lysine acetylation sites in 656 proteins, which account for 13.6% of the total proteins in the cells and is the highest ratio of acetyl proteins that has so far been identified in bacteria. The bioinformatics analysis of the acetylome showed that the acetylated proteins are involved in a wide range of cellular functions and exhibit diverse subcellular localizations. More specifically, proteins related to protein biosynthesis and carbon metabolism are the preferential targets of lysine acetylation. Moreover, two types of acetylation motifs, a lysine or arginine at the +4/+5 position and a tyrosine, histidine, or phenylalanine at the +1/+2 position, were revealed from the analysis of the acetylome. Additionally, the protein interaction network analysis demonstrates that a wide range of interactions are modulated by protein acetylation. This study provides a significant beginning for the in-depth exploration of the physiological role of lysine acetylation in V. parahaemolyticus.
2017-08-23 | PXD000924 | Pride
Project description:Vibrio (V.) parahaemolyticus is the leading cause of seafood borne gastro-intestinal infections in humans worldwide. It is widely found in marine environments and is isolated frequently from seawater, estuarine waters, sediments and raw or insufficiently cooked seafood. Within the food chain, V. parahaemolyticus encounters different temperature conditions that might alter the metabolism and pathogenicity of the bacterium. In this study, we performed gene expression profiling of V. parahaemolyticus RIMD 2210633 after exposure to 4°C, 15°C, 20°C, 37°C and 42°C to describe the cold and heat shock response. Analysis of transcriptomics data resulted in differential expression of 19 genes at 20°C, 193 genes at 4°C, 625 genes at 42°C and 639 genes at 15°C. Thus the highest portion of significantly expressed genes was observed at 15°C and 42°C with 13.3% and 13%, respectively. Genes of many functional categories were highly regulated even at lower temperatures. Our results showed that virulence associated genes (tdh1, tdh2, toxR, toxS, vopC, T6SS1, T6SS2) remained largely unaffected by heat or cold stresses. Along with folding and temperature shock depending systems, an overall temperature depended regulation of expression could be shown. Particularly the energy metabolism was affected most by changed temperatures. Whole-genome gene expression studies of food related pathogens such as V. parahaemolyticus reveal how these pathogens react to stress impacts for prediction of its behaviour under conditions like storage and transport.
2014-08-27 | GSE60815 | GEO
Project description:Vibrio parahaemolyticus is a Gram-negative marine bacterium. Strain RIMD 2210633, the wild type strain of the organism, causes acute gastroenteritis in humans. Human intestinal factor bile often affects the global gene regulation in some species of enteropathogenic bacteria. To determine the genes in V. parahaemolyticus that respond to bile, we investigated the differences in the transcriptomes of the wild type strain and the vtrA-null strain grown in Luria-Bertani medium cultivated with or without 0.04% crude bile. The vtrA gene encodes the previously identified T3SS2 regulator. Our goal is to demonstrate bile regulon controlled by VtrA in V. parahaemolyticus.
2010-10-10 | GSE21666 | GEO
Project description:Vibrio parahaemolyticus GenomeTrakr - US Food and Drug Administration, Center for Food Safety and Applied Nutrition
| PRJNA245882 | ENA
Project description:Vibrio (V.) parahaemolyticus is the leading cause of seafood borne gastro-intestinal infections in humans worldwide. It is widely found in marine environments and is isolated frequently from seawater, estuarine waters, sediments and raw or insufficiently cooked seafood. Within the food chain, V. parahaemolyticus encounters different temperature conditions that might alter the metabolism and pathogenicity of the bacterium. In this study, we performed gene expression profiling of V. parahaemolyticus RIMD 2210633 after exposure to 4°C, 15°C, 20°C, 37°C and 42°C to describe the cold and heat shock response. Analysis of transcriptomics data resulted in differential expression of 19 genes at 20°C, 193 genes at 4°C, 625 genes at 42°C and 639 genes at 15°C. Thus the highest portion of significantly expressed genes was observed at 15°C and 42°C with 13.3% and 13%, respectively. Genes of many functional categories were highly regulated even at lower temperatures. Our results showed that virulence associated genes (tdh1, tdh2, toxR, toxS, vopC, T6SS1, T6SS2) remained largely unaffected by heat or cold stresses. Along with folding and temperature shock depending systems, an overall temperature depended regulation of expression could be shown. Particularly the energy metabolism was affected most by changed temperatures. Whole-genome gene expression studies of food related pathogens such as V. parahaemolyticus reveal how these pathogens react to stress impacts for prediction of its behaviour under conditions like storage and transport. Temperature induced gene expression was detected in total bacterial RNA of V. parahaemolyticus. Five different temperatures (4°C, 15°C, 20°C, 37°C, 42°C) were used in at least 3 biological replicates (4 replicates for 37°C). Gene expression at 37°C was used for normalization.
2014-08-27 | E-GEOD-60815 | biostudies-arrayexpress
Project description:V. parahaemolyticus food and/or environmental isolates
| PRJNA1077923 | ENA