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Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres

Nuclear magnetic resonance (NMR) spectroscopy is a powerful analytical technique and has been widely used in metabolomics. However, the intrinsic low sensitivity of NMR prevents its applications to systems with limited sample availabilities. In this study, a new experimental approach is presented to...

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Autores principales: Duong, Nghia Tuan, Yamato, Masanori, Nakano, Masayuki, Kume, Satoshi, Tamura, Yasuhisa, Kataoka, Yosky, Wong, Alan, Nishiyama, Yusuke
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6152061/
https://www.ncbi.nlm.nih.gov/pubmed/28771206
http://dx.doi.org/10.3390/molecules22081289
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author Duong, Nghia Tuan
Yamato, Masanori
Nakano, Masayuki
Kume, Satoshi
Tamura, Yasuhisa
Kataoka, Yosky
Wong, Alan
Nishiyama, Yusuke
author_facet Duong, Nghia Tuan
Yamato, Masanori
Nakano, Masayuki
Kume, Satoshi
Tamura, Yasuhisa
Kataoka, Yosky
Wong, Alan
Nishiyama, Yusuke
author_sort Duong, Nghia Tuan
collection PubMed
description Nuclear magnetic resonance (NMR) spectroscopy is a powerful analytical technique and has been widely used in metabolomics. However, the intrinsic low sensitivity of NMR prevents its applications to systems with limited sample availabilities. In this study, a new experimental approach is presented to analyze mass-scarce samples in limited volumes of less than 300 nL with simple handling. The sample is loaded into the glass capillary, and this capillary is then inserted into a Kel-F rotor. The experimental performance of the capillary-inserted rotor (capillary-insert) is investigated on an isotropic solution of sucrose by the use of a high-resolution micro-sized magic angle spinning (HRµMAS) probe. The acquired NMR signal’s sensitivity to a given sample amount is comparable or even higher in comparison to that recorded by the standard solution NMR probe. More importantly, this capillary-insert coupled with the HRµMAS probe allows in-depth studies of heterogeneous samples as the MAS removes the line broadening caused by the heterogeneity. The NMR analyses of mass-limited cultured neurospheres have been demonstrated, resulting in high quality spectra where numerous metabolites are unambiguously identified.
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spelling pubmed-61520612018-11-13 Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres Duong, Nghia Tuan Yamato, Masanori Nakano, Masayuki Kume, Satoshi Tamura, Yasuhisa Kataoka, Yosky Wong, Alan Nishiyama, Yusuke Molecules Article Nuclear magnetic resonance (NMR) spectroscopy is a powerful analytical technique and has been widely used in metabolomics. However, the intrinsic low sensitivity of NMR prevents its applications to systems with limited sample availabilities. In this study, a new experimental approach is presented to analyze mass-scarce samples in limited volumes of less than 300 nL with simple handling. The sample is loaded into the glass capillary, and this capillary is then inserted into a Kel-F rotor. The experimental performance of the capillary-inserted rotor (capillary-insert) is investigated on an isotropic solution of sucrose by the use of a high-resolution micro-sized magic angle spinning (HRµMAS) probe. The acquired NMR signal’s sensitivity to a given sample amount is comparable or even higher in comparison to that recorded by the standard solution NMR probe. More importantly, this capillary-insert coupled with the HRµMAS probe allows in-depth studies of heterogeneous samples as the MAS removes the line broadening caused by the heterogeneity. The NMR analyses of mass-limited cultured neurospheres have been demonstrated, resulting in high quality spectra where numerous metabolites are unambiguously identified. MDPI 2017-08-03 /pmc/articles/PMC6152061/ /pubmed/28771206 http://dx.doi.org/10.3390/molecules22081289 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Duong, Nghia Tuan
Yamato, Masanori
Nakano, Masayuki
Kume, Satoshi
Tamura, Yasuhisa
Kataoka, Yosky
Wong, Alan
Nishiyama, Yusuke
Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres
title Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres
title_full Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres
title_fullStr Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres
title_full_unstemmed Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres
title_short Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres
title_sort capillary-inserted rotor design for hrµmas nmr-based metabolomics on mass-limited neurospheres
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6152061/
https://www.ncbi.nlm.nih.gov/pubmed/28771206
http://dx.doi.org/10.3390/molecules22081289
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