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Zheng, S.* ; Zhou, L.* ; Hoene, M.* ; Peter, A. ; Birkenfeld, A.L. ; Weigert, C. ; Liu, X.* ; Zhao, X.* ; Xu, G.* ; Lehmann, R.

A new biomarker profiling strategy for gut microbiome research: Valid association of metabolites to metabolism of microbiota detected by non-targeted metabolomics in human urine.

Metabolites 13:12 (2023)
DOI PMC
Creative Commons Lizenzvertrag
Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
The gut microbiome is of tremendous relevance to human health and disease, so it is a hot topic of omics-driven biomedical research. However, a valid identification of gut microbiota-associated molecules in human blood or urine is difficult to achieve. We hypothesize that bowel evacuation is an easy-to-use approach to reveal such metabolites. A non-targeted and modifying group-assisted metabolomics approach (covering 40 types of modifications) was applied to investigate urine samples collected in two independent experiments at various time points before and after laxative use. Fasting over the same time period served as the control condition. As a result, depletion of the fecal microbiome significantly affected the levels of 331 metabolite ions in urine, including 100 modified metabolites. Dominating modifications were glucuronidations, carboxylations, sulfations, adenine conjugations, butyrylations, malonylations, and acetylations. A total of 32 compounds, including common, but also unexpected fecal microbiota-associated metabolites, were annotated. The applied strategy has potential to generate a microbiome-associated metabolite map (M3) of urine from healthy humans, and presumably also other body fluids. Comparative analyses of M3 vs. disease-related metabolite profiles, or therapy-dependent changes may open promising perspectives for human gut microbiome research and diagnostics beyond analyzing feces.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Diagnosis ; Gut Flora ; Gut Microbiota ; Metabolites ; Metabolomics ; Microbiome ; Profiling ; Urine; Flora
ISSN (print) / ISBN 2218-1989
e-ISSN 2218-1989
Journal Metabolites
Quellenangaben Volume: 13, Issue: 10, Pages: , Article Number: 12 Supplement: ,
Publisher MDPI
Publishing Place St Alban-anlage 66, Ch-4052 Basel, Switzerland
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Diabetes Research and Metabolic Diseases (IDM)
Grants Chinese Academy of Sciences (CAS)
DFG/NSFC Sino-German mobility program