Targeted Determination of Tissue Energy Status by LC-MS/MS

Xiaorong Fu, Stanisław Deja, Blanka Kucejova, Joao A.G. Duarte, Jeffrey G. McDonald, Shawn C. Burgess

Research output: Contribution to journalArticle

Abstract

Intracellular nucleotides and acyl-CoAs are metabolites that are central to the regulation of energy metabolism. They set the cellular energy charge and redox state, act as allosteric regulators, modulate signaling and transcription factors, and thermodynamically activate substrates for oxidation or biosynthesis. Unfortunately, no method exists to simultaneously quantify these biomolecules in tissue extracts. A simple method was developed using ion-pairing reversed-phase high-performance liquid chromatography-electrospray-ionization tandem mass spectrometry (HPLC-ESI-MS/MS) to simultaneously quantify adenine nucleotides (AMP, ADP, and ATP), pyridine dinucleotides (NAD + and NADH), and short-chain acyl-CoAs (acetyl, malonyl, succinyl, and propionyl). Quantitative analysis of these molecules in mouse liver was achieved using stable-isotope-labeled internal standards. The method was extensively validated by determining the linearity, accuracy, repeatability, and assay stability. Biological responsiveness was confirmed in assays of liver tissue with variable durations of ischemia, which had substantial effects on tissue energy charge and redox state. We conclude that the method provides a simple, fast, and reliable approach to the simultaneous analysis of nucleotides and short-chain acyl-CoAs.

Original languageEnglish (US)
JournalAnalytical chemistry
DOIs
StatePublished - Jan 1 2019

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Liver
NAD
Assays
Nucleotides
Tissue
Electrospray ionization
Tissue Extracts
Adenine Nucleotides
Biosynthesis
High performance liquid chromatography
Biomolecules
Adenosine Monophosphate
Metabolites
Isotopes
Adenosine Diphosphate
Mass spectrometry
Transcription Factors
Adenosine Triphosphate
Ions
Oxidation

ASJC Scopus subject areas

  • Analytical Chemistry

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Targeted Determination of Tissue Energy Status by LC-MS/MS. / Fu, Xiaorong; Deja, Stanisław; Kucejova, Blanka; Duarte, Joao A.G.; McDonald, Jeffrey G.; Burgess, Shawn C.

In: Analytical chemistry, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Burgess, Shawn C.

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