Vibrio vulnificus strain:FORC_053
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA358753 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| GCA_003522555.1_sequence_report.txt | Txt |
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Project description:Vibriosis caused by Vibrio vulnificus on eels represents an important threat for this specie under culture conditions. Development of new transcriptomic tools is essential to increase the knowledge of eel biology, that nowadays is scarcer. Therefore, using previous results obtained by 454 sequencing of the eel immune-enriched transcriptome, an eel-specific custom microarray have been designed. Gills transcriptomic pattern were analyzed as a principal portal of entry for pathogens in fish after 1h of bath infection with Vibrio vulnificus to describe gill immune response. Moreover, two different strains were used, vibro vulnificus wild type (R99) and rtx double mutant (CT285), to asses the virulence of these pathogen caused by MARTX.
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Project description:Vibriosis caused by Vibrio vulnificus on eels represents an important threat for this specie under culture conditions. Development of new transcriptomic tools is essential to increase the knowledge of eel biology, that nowadays is scarcer. Therefore, using previous results obtained by 454 sequencing of the eel immune-enriched transcriptome, an eel-specific custom microarray have been designed. Gills transcriptomic pattern were analyzed as a principal portal of entry for pathogens in fish after 1h of bath infection with Vibrio vulnificus to describe gill immune response. Moreover, two different strains were used, vibro vulnificus wild type (R99) and rtx double mutant (CT285), to asses the virulence of these pathogen caused by MARTX. Adult european eels were bath infected with two Vibrio vulnificus strains, the wild type and double Rtx mutant (CT285). After 0, 3, 12h post-infection eel gills were sampled. Three individuals per experimental point were sampled, including a Control group and a Handling control group. Obtaining a total of 24 samples. The transcriptomic profile was described for each individual sample.
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Project description:Vibrio vulnificus multiply rapidly in host tissues under iron overloaded conditions. To understand the effects of iron in the physiology of this pathogen we performed a genome-wide transcriptional analysis of this bacterium growing under three different iron concentrations. V.vulnificus CMCP6 cells were grown under three different iron concentrations (TSBS + EDDA 50uM, TSBS and TSBS + FAC 250 ug/ml) and samples taken at log phase. Keywords: Response to the iron concentration of the media
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Project description:Vibrio vulnificus (V. vulnificus) is an opportunistic human pathogen known for causing various illnesses such as gastroenteritis, skin and muscle necrosis, septic shock, and sepsis. This halophilic estuarine bacterium's growth and infection process involves adaptation to both the natural briny environments and the host. OmpR, a response regulator in the EnvZ/OmpR two-component regulatory system (TCS), is crucial for environmental adaptation and pathogenicity. This study focused on investigating the impact of OmpR in V. vulnificus by creating an ompR knockout strain (ΔompR). The ΔompR strain exhibited reduced tolerance to alkaline stress, shorter flagella, and decreased virulence in epithelial cell and mouse models compared to the wild-type (WT) V. vulnificus. RNAseq analysis revealed the downregulation of genes involved in metabolism, flagellum-dependent motility, and transcription factors in the ΔompR strain. OmpR was found to repress the expression of aphB in alkaline conditions, impacting the acid resistance system CadBA, while also positively regulating the transcription of various flagellar genes. These findings suggest that OmpR acts as a global regulator, orchestrating the expression of multiple genes in response to different environments and during host invasion.
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