Summary of Study ST003071
This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR001913. The data can be accessed directly via it's Project DOI: 10.21228/M8FH9H This work is supported by NIH grant, U2C- DK119886.
See: https://www.metabolomicsworkbench.org/about/howtocite.php
This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.
| Study ID | ST003071 |
| Study Title | Attenuation of Helicobacter pylori VacA toxin-induced cell death by modulation of intracellular taurine metabolism - Study #4 |
| Study Type | untargeted metabolomics analysis |
| Study Summary | Repletion of intracellular taurine is sufficient to modulate VacA-induced cell death. To determine how supplemental taurine influences cellular metabolism to prevent VacA-induced cell death, we treated both AGS and AZ-521 cells with acid-activated VacA or an acidified buffer control for 12 hours or 5 hours, respectively, in the presence or absence of 10 mM extracellular taurine. Following intoxication, untargeted global metabolomics was conducted on the cell pellets. When the metabolic profiles of VacA-treated cells in the absence of extracellular taurine were compared to the metabolic profiles of VacA-treated cells in the presence of extracellular taurine, taurine was the only metabolite exhibiting significantly different levels in AZ-521 cells and one of two metabolites altered in AGS cells. |
| Institute | Vanderbilt University |
| Department | Chemistry |
| Laboratory | Center for Innovative Technology |
| Last Name | CODREANU |
| First Name | SIMONA |
| Address | 1234 STEVENSON CENTER LANE |
| SIMONA.CODREANU@VANDERBILT.EDU | |
| Phone | 6158758422 |
| Submit Date | 2024-02-07 |
| Raw Data Available | Yes |
| Raw Data File Type(s) | raw(Thermo) |
| Analysis Type Detail | LC-MS |
| Release Date | 2024-06-12 |
| Release Version | 1 |
Select appropriate tab below to view additional metadata details:
Project:
| Project ID: | PR001913 |
| Project DOI: | doi: 10.21228/M8FH9H |
| Project Title: | Attenuation of Helicobacter pylori VacA toxin-induced cell death by modulation of intracellular taurine metabolism |
| Project Type: | Untargeted Metabolomics analysis |
| Project Summary: | Colonization of the human stomach with H. pylori strains producing active forms of a secreted toxin (VacA) is associated with an increased risk of peptic ulcer disease and gastric cancer, compared to colonization with strains producing hypoactive forms of VacA. Previous studies have shown that VacA causes cell vacuolation and mitochondrial dysfunction. In this study, we sought to define the cellular metabolic consequences of VacA intoxication. Untargeted metabolomic analyses revealed that several hundred metabolites were significantly altered in VacA-treated gastroduodenal cells (AGS and AZ-521) compared to control cells. Pathway analysis suggested that VacA caused alterations in taurine and hypotaurine metabolism. Treatment of cells with the purified active s1m1 form of VacA, but not hypoactive s2m1 or Delta_6-27 VacA mutant proteins (defective in membrane channel formation), caused reductions in taurine and hypotaurine levels. Supplementation of the tissue culture medium with taurine or hypotaurine protected AZ-521 cells against VacA-induced cell death. Untargeted global metabolomics of AZ-521 cells or AGS cells intoxicated with VacA in the presence or absence of extracellular taurine showed that taurine was the main intracellular metabolite significantly altered by extracellular taurine supplementation. These results indicate that VacA causes alterations in cellular taurine metabolism and indicate that repletion of taurine is sufficient to attenuate VacA-induced cell death. |
| Institute: | Vanderbilt University |
| Department: | Chemistry |
| Laboratory: | Center for Innovative Technology |
| Last Name: | CODREANU |
| First Name: | SIMONA |
| Address: | 1234 STEVENSON CENTER LANE |
| Email: | SIMONA.CODREANU@VANDERBILT.EDU |
| Phone: | 6158758422 |
Subject:
| Subject ID: | SU003186 |
| Subject Type: | Cultured cells |
| Subject Species: | Homo sapiens |
| Taxonomy ID: | 9606 |
| Genotype Strain: | AGS and AZ-521 |
| Species Group: | AGS and AZ-521 |
Factors:
Subject type: Cultured cells; Subject species: Homo sapiens (Factor headings shown in green)
| mb_sample_id | local_sample_id | Treatment | Genotype | Treatment |
|---|---|---|---|---|
| SA332208 | A1 | 12h_PBS-treated | AGS cells | 0mM extra taurine |
| SA332209 | A4 | 12h_PBS-treated | AGS cells | 0mM extra taurine |
| SA332210 | A5 | 12h_PBS-treated | AGS cells | 0mM extra taurine |
| SA332211 | A3 | 12h_PBS-treated | AGS cells | 0mM extra taurine |
| SA332212 | A2 | 12h_PBS-treated | AGS cells | 0mM extra taurine |
| SA332213 | C3 | 12h_PBS-treated | AGS cells | 10 mM extra taurine |
| SA332214 | C4 | 12h_PBS-treated | AGS cells | 10 mM extra taurine |
| SA332215 | C5 | 12h_PBS-treated | AGS cells | 10 mM extra taurine |
| SA332216 | C1 | 12h_PBS-treated | AGS cells | 10 mM extra taurine |
| SA332217 | C2 | 12h_PBS-treated | AGS cells | 10 mM extra taurine |
| SA332218 | B2 | 12h_VacA-treated | AGS cells | 0mM extra taurine |
| SA332219 | B1 | 12h_VacA-treated | AGS cells | 0mM extra taurine |
| SA332220 | B3 | 12h_VacA-treated | AGS cells | 0mM extra taurine |
| SA332221 | B5 | 12h_VacA-treated | AGS cells | 0mM extra taurine |
| SA332222 | B4 | 12h_VacA-treated | AGS cells | 0mM extra taurine |
| SA332223 | D5 | 12h_VacA-treated | AGS cells | 10 mM extra taurine |
| SA332224 | D4 | 12h_VacA-treated | AGS cells | 10 mM extra taurine |
| SA332225 | D2 | 12h_VacA-treated | AGS cells | 10 mM extra taurine |
| SA332226 | D1 | 12h_VacA-treated | AGS cells | 10 mM extra taurine |
| SA332227 | D3 | 12h_VacA-treated | AGS cells | 10 mM extra taurine |
| SA332228 | E5 | 3h_PBS-treated | AZ521 cells | 0mM extra taurine |
| SA332229 | E4 | 3h_PBS-treated | AZ521 cells | 0mM extra taurine |
| SA332230 | E1 | 3h_PBS-treated | AZ521 cells | 0mM extra taurine |
| SA332231 | E3 | 3h_PBS-treated | AZ521 cells | 0mM extra taurine |
| SA332232 | E2 | 3h_PBS-treated | AZ521 cells | 0mM extra taurine |
| SA332233 | G2 | 3h_PBS-treated | AZ521 cells | 10 mM extra taurine |
| SA332234 | G5 | 3h_PBS-treated | AZ521 cells | 10 mM extra taurine |
| SA332235 | G1 | 3h_PBS-treated | AZ521 cells | 10 mM extra taurine |
| SA332236 | G4 | 3h_PBS-treated | AZ521 cells | 10 mM extra taurine |
| SA332237 | G3 | 3h_PBS-treated | AZ521 cells | 10 mM extra taurine |
| SA332238 | F1 | 3h_VacA-treated | AZ521 cells | 0mM extra taurine |
| SA332239 | F5 | 3h_VacA-treated | AZ521 cells | 0mM extra taurine |
| SA332240 | F2 | 3h_VacA-treated | AZ521 cells | 0mM extra taurine |
| SA332241 | F4 | 3h_VacA-treated | AZ521 cells | 0mM extra taurine |
| SA332242 | F3 | 3h_VacA-treated | AZ521 cells | 0mM extra taurine |
| SA332243 | H5 | 3h_VacA-treated | AZ521 cells | 10 mM extra taurine |
| SA332244 | H4 | 3h_VacA-treated | AZ521 cells | 10 mM extra taurine |
| SA332245 | H1 | 3h_VacA-treated | AZ521 cells | 10 mM extra taurine |
| SA332246 | H2 | 3h_VacA-treated | AZ521 cells | 10 mM extra taurine |
| SA332247 | H3 | 3h_VacA-treated | AZ521 cells | 10 mM extra taurine |
| Showing results 1 to 40 of 40 |
Collection:
| Collection ID: | CO003179 |
| Collection Summary: | AGS cells or AZ-521 cells were cultured in Roswell Park Memorial Institute (RPMI) 1640 medium containing 10% fetal bovine serum, or minimal essential medium (MEM) containing 10% fetal bovine serum and 5% nonessential amino acids, respectively. |
| Collection Protocol Filename: | Cell_Culture_Methods.pdf |
| Sample Type: | Stomach |
| Storage Conditions: | -80℃ |
Treatment:
| Treatment ID: | TR003195 |
| Treatment Summary: | AGS and AZ-521 cells were cultured in T-75 cell culture flasks overnight to a density of approximately 4x106 cells. Cells were incubated in media containing 20 ug/mL of purified s1m1 VacA toxin and 5 mM ammonium chloride, and supplemented with 10mM Taurine. Following intoxication, the media was removed, and cells were washed with PBS. Cells were detached by incubation with trypsin for 5 minutes and collected via centrifugation at 4°C at 1,000 rpm for 4 minutes. Trypsin was removed, cells were once again washed with PBS, and the cells were then flash-frozen in liquid nitrogen and stored at -70°C. |
| Treatment Protocol Filename: | Cell_Culture_Methods.pdf |
Sample Preparation:
| Sampleprep ID: | SP003192 |
| Sampleprep Summary: | Samples were analyzed via Liquid Chromatography-High Resolution Mass Spectrometry (LC-HRMS and LC-HRMS/MS)-based metabolomics using previously described methods26,27,28. Briefly, cell pellets were normalized by total protein (200 ug) and the corresponding cell supernatants were normalized by volume (200 uL). Metabolites were extracted with methanol/water 80:20. Heavy labeled phenylalanine-D8 and biotin-D2 were added to individual samples prior to protein precipitation. Following overnight incubation at -80°C, precipitated proteins were pelleted by centrifugation at 10,000 rpm for 10 min and metabolite extracts were transferred into two Eppendorf tubes in equal amounts and dried down in vacuo and stored at -80°C. |
| Sampleprep Protocol Filename: | MS_Methods_Cover_Taurine.pdf |
| Processing Storage Conditions: | -80℃ |
| Extract Storage: | -80℃ |
Combined analysis:
| Analysis ID | AN005029 |
|---|---|
| Analysis type | MS |
| Chromatography type | Reversed phase |
| Chromatography system | Thermo Vanquish |
| Column | Thermo Hypersil GOLD aQ (100 x 2.1mm,1.9um) |
| MS Type | ESI |
| MS instrument type | Orbitrap |
| MS instrument name | Thermo Q Exactive HF hybrid Orbitrap |
| Ion Mode | POSITIVE |
| Units | time_m/z |
Chromatography:
| Chromatography ID: | CH003800 |
| Methods Filename: | MS_Methods_Cover_Taurine.pdf |
| Instrument Name: | Thermo Vanquish |
| Column Name: | Thermo Hypersil GOLD aQ (100 x 2.1mm,1.9um) |
| Column Temperature: | 40 |
| Flow Gradient: | 30 min; 95%A, 5%B |
| Flow Rate: | 0.25 mL/min |
| Solvent A: | 100% water, 0.1% Formic Acid |
| Solvent B: | 80:20 acetonitrile:water, 0.1% Formic Acid |
| Chromatography Type: | Reversed phase |
MS:
| MS ID: | MS004768 |
| Analysis ID: | AN005029 |
| Instrument Name: | Thermo Q Exactive HF hybrid Orbitrap |
| Instrument Type: | Orbitrap |
| MS Type: | ESI |
| MS Comments: | Mass spectrometry raw data was imported, processed, normalized, and reviewed using Progenesis QI v.3.0 (Non-linear Dynamics, Newcastle, UK). |
| Ion Mode: | POSITIVE |
