MS 2 and LC libraries for untargeted metabolomics: Enhancing method development and identification confidence
As part of the "omics" technologies in the life sciences, metabolomics is becoming increasingly important. In untargeted metabolomics, unambiguous metabolite identification and the inevitable coverage bias that comes with the selection of analytical conditions present major challenges. Rel...
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Published in | Journal of chromatography. B, Analytical technologies in the biomedical and life sciences Vol. 1145; p. 122105 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Netherlands
15.05.2020
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Abstract | As part of the "omics" technologies in the life sciences, metabolomics is becoming increasingly important. In untargeted metabolomics, unambiguous metabolite identification and the inevitable coverage bias that comes with the selection of analytical conditions present major challenges. Reliable compound annotation is essential for translating metabolomics data into meaningful biological information. Here, we developed a fast and transferable method for generating in-house MS
libraries to improve metabolite identification. Using the new method we established an in-house MS
library that includes over 4,000 fragmentation spectra of 506 standard compounds for 6 different normalized collision energies (NCEs). Additionally, we generated a comprehensive liquid chromatography (LC) library by testing 57 different LC-MS conditions for 294 compounds. We used the library information to develop an untargeted metabolomics screen with maximum coverage of the metabolome that was successfully tested in a study of 360 human serum samples. The current work demonstrates a workflow for LC-MS/MS-based metabolomics, with enhanced metabolite identification confidence and the possibility to select suitable analysis conditions according to the specific research interest. |
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AbstractList | As part of the "omics" technologies in the life sciences, metabolomics is becoming increasingly important. In untargeted metabolomics, unambiguous metabolite identification and the inevitable coverage bias that comes with the selection of analytical conditions present major challenges. Reliable compound annotation is essential for translating metabolomics data into meaningful biological information. Here, we developed a fast and transferable method for generating in-house MS
libraries to improve metabolite identification. Using the new method we established an in-house MS
library that includes over 4,000 fragmentation spectra of 506 standard compounds for 6 different normalized collision energies (NCEs). Additionally, we generated a comprehensive liquid chromatography (LC) library by testing 57 different LC-MS conditions for 294 compounds. We used the library information to develop an untargeted metabolomics screen with maximum coverage of the metabolome that was successfully tested in a study of 360 human serum samples. The current work demonstrates a workflow for LC-MS/MS-based metabolomics, with enhanced metabolite identification confidence and the possibility to select suitable analysis conditions according to the specific research interest. |
Author | Othman, Alaa Jöhren, Olaf Folberth, Julica Schwaninger, Markus Begemann, Kimberly |
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BackLink | https://www.ncbi.nlm.nih.gov/pubmed/32305706$$D View this record in MEDLINE/PubMed |
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Keywords | HRMS Metabolomics Hydrophilic interaction chromatography Orbitrap In-house library LC-ESI-MS/MS |
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SubjectTerms | Chromatography, Liquid - methods Humans Metabolome Metabolomics - methods Plasma - chemistry Plasma - metabolism Tandem Mass Spectrometry - methods |
Title | MS 2 and LC libraries for untargeted metabolomics: Enhancing method development and identification confidence |
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