Metabolite Measurement: Pitfalls to Avoid and Practices to Follow.

TitleMetabolite Measurement: Pitfalls to Avoid and Practices to Follow.
Publication TypeJournal Article
Year of Publication2017
AuthorsLu, W, Su, X, Klein, MS, Lewis, IA, Fiehn, O, Rabinowitz, JD
JournalAnnu Rev Biochem
Volume86
Pagination277-304
Date Published2017 Jun 20
ISSN1545-4509
KeywordsAdenosine Triphosphate, Animals, Chromatography, Liquid, Gas Chromatography-Mass Spectrometry, Glutathione, Guidelines as Topic, Humans, Liquid Phase Microextraction, Magnetic Resonance Spectroscopy, Mass Spectrometry, Metabolomics, Mice, NADP, Solvents
Abstract

Metabolites are the small biological molecules involved in energy conversion and biosynthesis. Studying metabolism is inherently challenging due to metabolites' reactivity, structural diversity, and broad concentration range. Herein, we review the common pitfalls encountered in metabolomics and provide concrete guidelines for obtaining accurate metabolite measurements, focusing on water-soluble primary metabolites. We show how seemingly straightforward sample preparation methods can introduce systematic errors (e.g., owing to interconversion among metabolites) and how proper selection of quenching solvent (e.g., acidic acetonitrile:methanol:water) can mitigate such problems. We discuss the specific strengths, pitfalls, and best practices for each common analytical platform: liquid chromatography-mass spectrometry (LC-MS), gas chromatography-mass spectrometry (GC-MS), nuclear magnetic resonance (NMR), and enzyme assays. Together this information provides a pragmatic knowledge base for carrying out biologically informative metabolite measurements.

DOI10.1146/annurev-biochem-061516-044952
Alternate JournalAnnu. Rev. Biochem.
PubMed ID28654323
Grant ListDP1 DK113643 / DK / NIDDK NIH HHS / United States
R50 CA211437 / CA / NCI NIH HHS / United States