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Tailored sensitivity reduction improves pattern recognition and information recovery with a higher tolerance to varied sample concentration for targeted urinary metabolomics
Zhixiang Yan; Ru Yan
2016-04-22
Source PublicationJournal of Chromatography A
ISSN18733778 00219673
Volume1443Pages:101-110
Abstract

Variation in total metabolite concentration among different samples has been a major challenge for urinary metabolomics. Here we investigated the potential of tailored sensitivity reduction of high abundance metabolites for improved targeted urinary metabolomics. Two levels of sensitivity reduction of the 21 predominant urinary metabolites were assessed by employing less sensitive transition or collision energy with level 1 (reduced 1) and 2 (reduced 2) exhibiting 30-90% and 2-20% of the optimal sensitivity, respectively. Five postacquisition normalization methods were compared including no normalization, probabilistic quotient normalization, and normalization to sample median, creatinine intensity, and total intensity. Normalization to total intensity with reduced 2 gave the best pattern recognition and information recovery with a higher tolerance to varied sample concentration. Pareto scaling could improve the performance of tailored sensitivity reduction (reduced 2) for targeted urinary metabolomics while data transformation and autoscaling were susceptible to varied sample concentration. Using controlled spike-in experiments, we demonstrated that tailored sensitivity reduction revealed more differentially expressed markers with higher accuracy than did the conventional optimal sensitivity. This was particularly true when the differences between the sample groups are small. This work also served as an introductory guideline for handling targeted metabolomics data using the open-source software MetaboAnalyst.

KeywordTargeted Metabolomics Tailored Sensitivity Reduction Multiple Reaction Monitoring Data Scaling Data Transformation Information Recovery Urinary Metabolomics
DOI10.1016/j.chroma.2016.03.023
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry
WOS SubjectBiochemical Research Methods ; Chemistry, Analytical
WOS IDWOS:000374362600013
Scopus ID2-s2.0-84977933374
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Citation statistics
Document TypeJournal article
CollectionInstitute of Chinese Medical Sciences
Corresponding AuthorRu Yan
AffiliationInstitute of Chinese Medical Sciences, University of Macau
First Author AffilicationInstitute of Chinese Medical Sciences
Corresponding Author AffilicationInstitute of Chinese Medical Sciences
Recommended Citation
GB/T 7714
Zhixiang Yan,Ru Yan. Tailored sensitivity reduction improves pattern recognition and information recovery with a higher tolerance to varied sample concentration for targeted urinary metabolomics[J]. Journal of Chromatography A, 2016, 1443, 101-110.
APA Zhixiang Yan., & Ru Yan (2016). Tailored sensitivity reduction improves pattern recognition and information recovery with a higher tolerance to varied sample concentration for targeted urinary metabolomics. Journal of Chromatography A, 1443, 101-110.
MLA Zhixiang Yan,et al."Tailored sensitivity reduction improves pattern recognition and information recovery with a higher tolerance to varied sample concentration for targeted urinary metabolomics".Journal of Chromatography A 1443(2016):101-110.
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