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research article

Highly Repeatable Dissolution Dynamic Nuclear Polarization for Heteronuclear NMR Metabolomics

Bornet, Aurelien  
•
Maucourt, Mickael
•
Deborde, Catherine
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2016
Analytical Chemistry

At natural C-13 abundance, metabolomics based on heteronuclear NMR is limited by sensitivity. We have recently demonstrated how hyperpolarization by dissolution dynamic nuclear polarization (D-DNP) assisted by cross-polarization (CP) provides a reliable way of enhancing the sensitivity of heteronudear NMR in dilute mixtures of metabolites. In this Technical Note, we evaluate the precision of this experimental approach, a critical point for applications to metabolomics. The higher the repeatability, the greater the likelihood that one can detect small biologically relevant differences between samples. The average repeatability of our state-of-the-art D-DNP NMR equipment for samples of metabolomic relevance (20 mg dry weight tomato extracts) is 3.6% for signals above the limit of quantification (LOQ) and 6.4% when all the signals above the limit of detection (LOD) are taken into account. This first report on the repeatability of D-DNP highlights the compatibility of the technique with the requirements of metabolomics and confirms its potential as an analytical tool for such applications.

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Type
research article
DOI
10.1021/acs.analchem.6b01094
Web of Science ID

WOS:000378470200016

Author(s)
Bornet, Aurelien  
Maucourt, Mickael
Deborde, Catherine
Jacob, Daniel
Milani, Jonas  
Vuichaud, Basile  
Ji, Xiao  
Dumez, Jean-Nicolas
Moing, Annick
Bodenhausen, Geoffrey  
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Date Issued

2016

Publisher

Amer Chemical Soc

Published in
Analytical Chemistry
Volume

88

Issue

12

Start page

6179

End page

6183

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LRMB  
Available on Infoscience
October 18, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/129934
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