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Vibrio vulnificus MARTX toxin effector domains differentially remodel the transcriptional response of intestinal epithelial cells

ABSTRACT: Vibrio vulnificus MARTX toxin effector domains differentially remodel the transcriptional response of intestinal epithelial cells

PROVIDER: PRJNA781942 | ENA |

REPOSITORIES: ENA

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Vibrio vulnificus MARTX toxin effector domains differentially remodel the transcriptional response of intestinal epithelial cells

Project description:Vibrio vulnificus is an foodborne pathogen that can cause gastroenteritis and septicemia in humans. V. vulnificus secretes a multifunctional autoprocessing repeats-in-toxin (MARTX) toxin as an essential virulence factor to cause disease. MARTX toxins are pore-forming toxins that translocate multiple functionally independent effector domains into a target cell. MARTX toxins of V. vulnificus can contain anywhere from 3 to 5 of the 10 identified effector domains and strains with different effector repertories having varying virulence potential. The goal of this study was to compare how different effector combinations from an F-type MARTX toxin differentially remodel the transcriptional response of human intestinal epithelial cells (IECs). F-type MARTX toxins contain five effector domains – the actin crosslinking domain (ACD), two copies the makes caterpillar floppy-like domain (MCF), and alpha-beta hydrolase (ABH) domain, and the Ras/Rap1 specific endopeptidase (RRSP). Cultured human IECs were treated with V. vulnificus or strains modified to secrete a toxin with only ACD, ACD with MCF-ABH, ACD with RRSP, or no active effectors. We demonstrate that when no active effectors are present, the bacterium induces minimal changes in the transcriptional profile of IECs. However, the strains containing different effector combinations each uniquely remodeled the transcriptional profile of IECs. These data provide insight into how V. vulnificus strains with varying effector combinations can differentially regulate the host cell response to cause disease.

2021-11-21 | GSE189194 | GEO

Host cell - V. vulnificus interactions

Project description:Dual transcriptome analysis of the V. vulnificus-infected human cells; To understand toxin-stimulated host-pathogen interactions, we set up dual transcriptome sequencing experiments using the human epithelial (HT-29) or immune (differentiated THP-1; dTHP-1) cells infected with the sepsis-causing pathogen Vibrio vulnificus, either in wild-type or the MARTX toxin-deficient backgrounds.

2020-08-03 | GSE136540 | GEO

RNA-sequencing analysis examining how the Vibrio cholerae MARTX toxin and its inidividual effector domains modulate the transcriptome of human intestinal epithelial cells.

Project description:MARTX toxins are large single polypeptide bacterial toxins that translocate multiple cytotoxic and functionally independent effector domains into the cytosol of a target eukaryotic cell. Pandemic Vibrio cholerae El Tor O1 strains secrete a MARTX toxin with three effector domains — the actin crosslinking domain (ACD), the Rho inactivation domain (RID), and the alpha/beta-hydrolase domain (ABH) — to regulate innate immunity and enhance colonization. The goal of this study was to compare changes in the transcriptome of human intestinal epithelial cells (IECs) treated with V. cholerae modified to secret a toxin with only one effector domain to the transcriptome of cells treated with V. cholerae secreting the wild type MARTX toxin that delivers all three effector domains simultaneously. We demonstrate that when all three effectors are delivered there is no change in transcriptional response of IECs compared to untreated cells. However, when only ACD is delivered, transcriptional profiling revealed a significant proinflammatory response is activated. These data suggests that V. cholerae may utilize co-delivery of RID and/or ABH to silence the intestinal immune response to ACD activity. These data provide insight into how the V. cholerae MARTX toxin effector domains function together to alter the innate immune response of IECs during bacterial infection.

2019-01-23 | GSE125453 | GEO

Vibrio vulnificus: Wild type vs. iscR mutant (V. vulnificus iron-sulfur cluster regulator)

2013-02-27 | GSE44679 | GEO

A transcriptomic study reveals that fish vibriosis due to the zoonotic pathogen Vibrio vulnificus is an acute inflammatory disease.

Project description:Vibrio vulnificus is a marine zoonotic pathogen associated with fish farms that is considered a biomarker of climate change. Zoonotic strains trigger a rapid death of their susceptible hosts (fish or humans) by septicemia that has been linked to a cytokine storm in mice. A toxin called RtxA1 produced by the bacteria might play an important role in bacterial invasion and subsequent death by septic shock since animals infected with a mutant deficient in rtxA1 suffer from septicemia but do not die. The aim of this study was to globally analyze the early eel immune response in blood against V. vulnificus, as well as the role of the RtxA1 toxin on this interaction.

2022-02-18 | GSE196944 | GEO

Vibrio vulnificus : biofilm cells vs. planktonic cells

Project description:The profiles of transcripts from the planktonic cells and biofilm cells of V. vulnificus were compared by using a V. vulnificus whole-genome microarray

2014-07-26 | GSE59753 | GEO

Vibrio vulnificus: Wild type vs. iscR mutant (V. vulnificus iron-sulfur cluster regulator)

Project description:IscR is a novel global regulator potentially contributing to the overall success in survival and pathogenesis of V. vulnificus by coordinating the regulation of various virulence factors. The profiles of transcripts from the V. vulnificus iscR mutant and the parental wild type were compared by using a V. vulnificus whole-genome microarray. Two-condition experiment: Wild type vs. iscR mutant. Biological replicates: 3 control, 3 mutant strains, independently grown and harvested. One replicate per array. For transcriptome analysis, the V. vulnificus whole genome TwinChip, manufactured and kindly provided by the 21C Frontier Microbial Genomics and Applications Center (Daejeon, South Korea), was used.

2013-02-27 | E-GEOD-44679 | biostudies-arrayexpress

European eel immune response against Vibrio vulnificus challenge

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.

2013-03-15 | GSE45163 | GEO

Vibrio vulnificus : biofilm cells vs. planktonic cells

Project description:The profiles of transcripts from the planktonic cells and biofilm cells of V. vulnificus were compared by using a V. vulnificus whole-genome microarray Two-condition experiment, planktonic cells vs. biofilm cells. Biological replicates: 3 control, 3 experimental, independently grown and harvested. One replicate per array. For transcriptome analysis, the V. vulnificus whole genome TwinChip, manufactured and kindly provided by the 21C Frontier Microbial Genomics and Applications Center (Daejeon, South Korea), was used.

2014-07-26 | E-GEOD-59753 | biostudies-arrayexpress

Transcriptome analysis of virulence factors in Vibrio vulnificus FORC_036, isolated from a surf clam

Project description:Small octopus is one of the major source for V. vulnificus outbreak among aquatic products in Northeast Asian due to improperly cooking and wound infection by mishandling. However, there is no report on whole genome sequence of V. vulnificus isolated from contaminated surf clam, thus no information is available for major virulence factors about V. vulnificus obtained from small octopus. Therefore, the analysis of transcriptome of isolated V. vulnificus from products are necessary to investigate potential risk of foodborne illness by contaminated products.

2017-07-11 | GSE101055 | GEO

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