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Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Systematic, modifying group-assisted strategy expanding coverage of metabolite annotation in liquid chromatography-mass spectrometry-based nontargeted metabolomics studies.
Anal. Chem. 93, 10916-10924 (2021)
From microbes to human beings, nontargeted metabolic profiling by liquid chromatography (LC)-mass spectrometry (MS) has been commonly used to investigate metabolic alterations. Still, a major challenge is the annotation of metabolites from thousands of detected features. The aim of our research was to go beyond coverage of metabolite annotation in common nontargeted metabolomics studies by an integrated multistep strategy applying data-dependent acquisition (DDA)-based ultrahigh-performance liquid chromatography (UHPLC)-high-resolution mass spectrometry (HRMS) analysis followed by comprehensive neutral loss matches for characteristic metabolite modifications and database searches in a successive manner. Using pooled human urine as a model sample for method establishment, we found 22% of the detected compounds having modifying structures. Major types of metabolite modifications in urine were glucuronidation (33%), sulfation (20%), and acetylation (6%). Among the 383 annotated metabolites, 100 were confirmed by standard compounds and 50 modified metabolites not present in common databases such as human metabolite database (HMDB) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were structurally elucidated. Practicability was tested by the investigation of urines from pregnant women diagnosed with gestational diabetes mellitus vs healthy controls. Overall, 83 differential metabolites were annotated and 67% of them were modified metabolites including five previously unreported compounds. To conclude, the systematic modifying group-assisted strategy can be taken as a useful tool to extend the number of annotated metabolites in biological and biomedical nontargeted studies.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Human Urine; Cancer; Diagnosis
ISSN (print) / ISBN
0003-2700
e-ISSN
1520-6882
Zeitschrift
Analytical Chemistry
Quellenangaben
Band: 93,
Heft: 31,
Seiten: 10916-10924
Verlag
American Chemical Society (ACS)
Verlagsort
1155 16th St, Nw, Washington, Dc 20036 Usa
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed
Förderungen
foundation for Pathobiochemistry and Molecular Diagnostics of the German Society of Clinical Chemistry and Laboratory Medicine
German Federal Ministry of Education and Research (BMBF)
National Key Research and Development Program of China
National Natural Science Foundation of China
German Federal Ministry of Education and Research (BMBF)
National Key Research and Development Program of China
National Natural Science Foundation of China