Summary of Study ST002944
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 PR001831. The data can be accessed directly via it's Project DOI: 10.21228/M81Q73 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 | ST002944 |
| Study Title | Longitudinal polar fecal metabolomics of mice undergoing sensitization to beta-lactoglobulin |
| Study Type | (un)targeted MS |
| Study Summary | This study is part of a multi-part study, including a. longitudinal polar fecal metabolomics of mice undergoing sensitization to beta-lactoglobulin b. polar fecal metabolomics of a patient cohort c. fecal lipidomics of a patient cohort d. polar urinary metabolomics of a patient cohort e. polar metabolomics of in vitro digestions This specific part is part a. longitudinal polar fecal metabolomics of mice undergoing sensitization to beta-lactoglobulin |
| Institute | Ghent University |
| Department | Department of Translational Physiology, Infectiology and Public Health |
| Laboratory | Laboratory for Integrative Metabolomics |
| Last Name | De Paepe |
| First Name | Ellen |
| Address | Salisburylaan 133, 9820 Merelbeke, Belgium |
| Ellen.DePaepe@UGent.be | |
| Phone | 0032479081098 |
| Submit Date | 2023-07-06 |
| Raw Data Available | Yes |
| Raw Data File Type(s) | raw(Thermo) |
| Analysis Type Detail | LC-MS |
| Release Date | 2023-11-01 |
| Release Version | 1 |
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Project:
| Project ID: | PR001831 |
| Project DOI: | doi: 10.21228/M81Q73 |
| Project Title: | Integrated gut metabolome and microbiome fingerprinting reveals that dysbiosis precedes allergic inflammation in IgE-mediated pediatric cow’s milk allergy |
| Project Type: | (un)targeted MS |
| Project Summary: | Background: IgE-mediated cow’s milk allergy (IgE-CMA) is one of the first allergies to arise in early childhood and may result from exposure to various milk allergens, of which β-lactoglobulin (BLG) and casein are the most important. Understanding the underlying mechanisms behind IgE-CMA is imperative for the discovery of novel biomarkers and the design of innovative treatment and prevention strategies. Methods: We report a longitudinal in vivo murine model, in which 2 mice strains (BALB/c and C57Bl/6) were sensitized to BLG using either cholera toxin or an oil emulsion (n=6 per group). After sensitization, mice were challenged orally, their clinical signs monitored, antibody (IgE and IgG1) and cytokine levels (IL-4 and IFN-γ) measured, and fecal samples subjected to metabolomics. The results of the murine models were further supported by fecal microbiome-metabolome data from our population of IgE-CMA (n=24) and healthy (n=23) children (Trial: NCT04249973), on which polar metabolomics, lipidomics and 16S rRNA metasequencing were performed. In vitro gastrointestinal digestions and multi-omics corroborated the microbial origin of proposed metabolic changes. Results: During sensitization, we observed multiple microbially derived metabolic alterations, most importantly bile acid, energy and tryptophan metabolites, that preceded allergic inflammation. The latter was reflected in a disturbed sphingolipid metabolism. We confirmed microbial dysbiosis, and its causal effect on metabolic alterations in our patient cohort, which was accompanied by metabolic signatures of low-grade inflammation. Conclusion: Our results indicate that gut dysbiosis precedes allergic inflammation and nurtures a chronic low-grade inflammation in children on elimination diets, opening important new opportunities for future prevention and treatment strategies. |
| Institute: | Ghent University |
| Department: | Translational Physiology, Infectiology and Public Health |
| Laboratory: | Laboratory for Integrative Metabolomics |
| Last Name: | De Paepe |
| First Name: | Ellen |
| Address: | Salisburylaan 133, Merelbeke, Oost-Vlaanderen, 9820, Belgium |
| Email: | Ellen.DePaepe@UGent.be |
| Phone: | 0032479081098 |
| Funding Source: | Fonds Wetenschappelijk Onderzoek |
