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The proteomic of Helicobacter pylori OMVs

ABSTRACT: In this study, we purified and characterized two types of H.pylori OMVs (standard strain NCTC11637 and clinical strain Hp-400) and analyzed the proteome using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS).

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Helicobacter Pylori J99 (campylobacter Pylori J99)

TISSUE(S): Cell Suspension Culture

SUBMITTER: Sisi Wei

LAB HEAD: Lianmei Zhao

PROVIDER: PXD025216 | Pride | 2022-02-14

REPOSITORIES: Pride

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Dataset's files

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			Action	DRS
	11637_EXO_1.msf	Msf
	11637_OMV_1.raw	Raw
	11637_OMV_2.raw	Raw
	11637_OMV_3.raw	Raw
	400_EXO_1.msf	Msf

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Publications

Outer Membrane Vesicles Secreted by Helicobacter pylori Transmitting Gastric Pathogenic Virulence Factors.

Wei Sisi S Li Xiaoya X Wang Jingjing J Wang Yaojie Y Zhang Cong C Dai Suli S Wang Xian X Deng Xiaoqing X Zhao Lianmei L Shan Baoen B

ACS omega 20211228 1

Helicobacter pylori (H. pylori) is known to be a major pathogen causing gastric diseases through its direct localization in gastric epithelium cells. H. pylori releases outer membrane vesicles (OMVs) throughout the growth process. The content, function, and mechanism of H. pylori OMVs in gastric epithelial cells remain unclear. In this study, we extracted and characterized H. pylori OMVs of two strains (standard strain NCTC11637 and clinical strain Hp-400) and ...[more]

PMID: 35036696

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The proteomic change of GES1 infected by Helicobacter pylori OMVs

Project description:We investigated the effect of H.pylori OMVs on cellular events by detecting proteomic changes in GES1 cells. GES1 cells cocultured with increasing concentrations of H.pylori OMVs were subjected to quantitative proteomic analyses using label-free methods for relative quantitation.

2022-02-14 | PXD025259 | Pride

Helicobacter pylori outer membrane vesicle proteome

Project description:Gram negative bacteria release outer membrane vesicles (OMVs) as part of their natural growth. These OMVs take part in a biological functions including bacterial communication, exchange of genetic material and bacterial pathogenesis. However, the relationship between bacterial growth stage and OMV protein composition has not been explored before nor how their proteome is different to their parent bacterium. In this study, we examined the proteome of Helicobacter pylori and its OMVs from early log, late log or stationary phase of growth and found that globally, the protein content of OMVs over time is vastly different to one another as well as to their parent bacterium. OMVs purified from early log phase of growth contained the greatest number of unique proteins and a significant upregulation of virulence and pathogenic proteins. However, when compared back to their parent bacterium, OMVs from later stages of growth contained more unique proteins than those from earlier stages of growth. We show for the first time the regulation of OMV protein composition by H. pylori that is dependent on bacterial growth stage. Our results have expanded our understanding of the fundamental production of OMVs and the selective packaging of cargo in OMVs that result in specific functions.

2021-03-23 | PXD024918 | Pride

The proteomic changes of GES1 infected by Helicobacter pylori

Project description:We explored the proteomic changes in GES1 cells induced by H.pylori. GES1 cells cocultured with increasing concentrations of H.pylori were subjected to quantitative proteomic analyses using label-free methods for relative quantitation.

2022-02-14 | PXD025281 | Pride

short RNA-Seq of Pseudomonas aeruginosa outer membrane vesicles (OMVs) and whole cells

Project description:Characterization of the sRNA content of P. aeruginosa OMVs compared to whole cells. Result: OMVs contain differentially packaged sRNAs. Whole cell PA14 and OMVs from 3 separate preparations.

2016-05-13 | E-GEOD-71598 | biostudies-arrayexpress

small RNA-Seq showing transfer of bacterial outer membrane vesicle (OMV) sRNA to host airway epithelial cells

Project description:This study is the first to show transfer of regulatory bacterial sRNAs from bacterial OMVs to host cells. Demonstration of transfer of bacterial sRNA from Pseudomonas aeruginosa OMVs to host cells in two cell types. RNA isolated from PA14 OMV exposed primary human bronchial epithelial cells or CFBE41o- bronchial epithelial cells as well as unexposed control cells was analyzed by small RNA-Seq. Primary cell exposures were performed on two donors and exposures of CFBE41o- cells were done in triplicate.

2016-05-13 | E-GEOD-80421 | biostudies-arrayexpress

Transcriptomic remodeling of gastric cells by Helicobacter pylori Outer Membrane Vesicles

Project description:Helicobacter pylori, a bacterium that colonizes the human stomach, like all Gram-negative bacteria spontaneously shed outer membrane vesicles (OMVs). OMVs, which act as a delivery system for bacterial components, are involved in bacterial-host interactions and thus contribute to pathogenesis. In this study, to understand the gene expression changes that human gastric epithelial cells might undergo when exposed to H. pylori-OMVs, we profiled the transcriptomic changes of the MKN74 gastric cell line induced by OMVs compared to control cells and H. pylori-infected cells, using the Ion AmpliSeq™ Transcriptome Human Gene Expression Panel. The top enriched pathways in the OMVs challenge condition included amino acid-related metabolic pathways, mitogen-activated protein kinase signaling, autophagy, and ferroptosis. The cell cycle, DNA replication, and repair pathways were the top diminished pathways. The transcriptomic changes induced by OMVs were largely consistent with those of the bacteria, although often at low expression levels, suggesting that their effects will mostly reinforce those of the bacterium itself. Our data provide a valuable portrayal of the transcriptomic remodeling of gastric cells by H. pylori-OMVs, which can be further dissected regarding the underlying molecular mediators and explored to understand the pathobiology of the full-spectrum of H. pylori-mediated diseases.

2024-04-03 | GSE229512 | GEO

Serratia bacteria Su_YN1 OMV LC-MSMS

Project description:This project aims to analyse the proteins of outer membrane vesicles (OMVs) released by a Serratia bacteria strain Su_YN1, which is isolated from field-caught mosquito gut. Su_YN1 produces massive OMVs under host serum induction. The data contain LC-MSMS results of the OMVs released without serum induction (WT-), and serum induced OMVs of WT strain (WT+) and several gene disruption strains (disruption of the ABC transporter genes ABC1 and ABC2). This project was conducted by CEMPS lab and Shanghai hoogen biotech co.ltd. The CEMPS lab prepared the purified OMV samples and Shanghai hoogen biotech co.ltd conducted the LC-MSMS analysis.

2023-08-02 | PXD042831 | Pride

Isolation method and characterization of outer membranes vesicles of Helicobacter pylori grown in a chemically defined medium

Project description:Outer membrane vesicles (OMVs) are small vesicles constitutively shed by all Gram-negative bacterium, which have been proposed to play a role in Helicobacter pylori persistence and pathogenesis. The methods currently available for the isolation of H. pylori OMVs are diverse and time-consuming, raising the need for a protocol standardization, which was the main aim of this study. Here, we showed that the chemically defined F12 medium, supplemented with cholesterol, nutritionally supports bacterial growth and maintains H. pylori viability for at least 72 h. Additionally, we developed an abridged protocol for isolation of OMVs from these bacterial cultures, which comprises a low-speed centrifugation, supernatant filtration through a 0.45 µm pore, and two ultracentrifugations for OMVs’ recovery and washing. Using this approach, a good yield of highly pure bona fide OMVs was recovered from cultures of different H. pylori strains and in different periods of bacterial growth. Analysis of the proteome of OMVs isolated from H. pylori F12-cholesterol cultures validated the efficacy of our isolation protocol in attaining a higher sample purity with low representation of flagella proteins. The comparison with the proteomes of H. pylori OMVs available in the literature demonstrated that OMVs carry a selective protein cargo, suggesting their importance for H. pylori survival and pathogenesis. In conclusion, this work proposes a time- and cost-efficient protocol for the isolation of H. pylori OMVs from a chemically defined culture medium that is suitable for implementation in research and in the biopharmaceutical field.

2021-05-31 | PXD025393 | Pride

CD300E is activated by Helicobacter pylori macrophages infection

Project description:Macrophages are important cells involved in infections responses. They are mediators of gastritis in acute Helicobacter pylori (Hp) infection. After macrophages infection with Hp one of the most up-regulated protein is CD300E. To identify effects of CD300E activation in macrophages an agonistic antibody was used to activate CD300E and effects on gene expression were monitored.

2018-02-22 | GSE98639 | GEO

The expression of miRNAs is influenced by the infection of Helicobacter Pylori

Project description:Macrophages are important cells involved in infections responses. They are mediators of gastritis in acute Helicobacter pylori (Hp) Infection and to identify how Hp affects macrophages response to infection we measured miRNA expression after macrophages Hp infection.

2018-02-22 | GSE98641 | GEO