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A new strategy for MS/MS data acquisition applying multiple data dependent experiments on Orbitrap mass spectrometers in non-targeted metabolomic applications
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  • 作者:Graham Mullard ; James W. Allwood ; Ralf Weber ; Marie Brown ; Paul Begley…
  • 关键词:Metabolite annotation ; Metabolite identification ; MS/MS ; CID ; HCD ; Orbitrap
  • 刊名:Metabolomics
  • 出版年:2015
  • 出版时间:October 2015
  • 年:2015
  • 卷:11
  • 期:5
  • 页码:1068-1080
  • 全文大小:1,069 KB
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  • 作者单位:Graham Mullard (1) (3)
    James W. Allwood (4)
    Ralf Weber (4)
    Marie Brown (1) (3)
    Paul Begley (1) (3)
    Katherine A. Hollywood (1) (3)
    Martin Jones (4)
    Richard D. Unwin (1) (3)
    Paul N. Bishop (1) (2) (3)
    Garth J. S. Cooper (1) (3) (5) (6)
    Warwick B. Dunn (1) (3) (4)

    1. Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human Sciences, The University of Manchester, Manchester, M13 9WL, UK
    3. Centre for Advanced Discovery and Experimental Therapeutics (CADET), Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, M13 9WL, UK
    4. School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
    2. Centre for Hearing and Vision Research, Institute of Human Development, Faculty of Medical and Human Sciences, The University of Manchester, Manchester, M13 9WL, UK
    5. Maurice Wilkins Centre for Molecular Biodiscovery, Faculty of Science, University of Auckland, Auckland, 1020, New Zealand
    6. Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
  • 刊物主题:Biochemistry, general; Molecular Medicine; Cell Biology; Developmental Biology; Biomedicine general;
  • 出版者:Springer US
  • ISSN:1573-3890
文摘
The annotation and identification of metabolites is a current bottleneck in non-targeted metabolomics studies. Although accurate measurement of m/z is applied routinely in UPLC–MS applications to putatively annotate metabolites, the acquisition of MS/MS or MS n data is required to deduce structural information, further reducing the chemical search-space and providing greater confidence in metabolite annotation by comparison to mass spectral databases. Here we propose an innovative new strategy for data dependent acquisition (DDA) for on-line MS/MS data acquisition in parallel to full-scan metabolite profiling on LTQ-Orbitrap mass spectrometers. We recommend the application of different and integrated DDA MS/MS experiments to increase the coverage of unique metabolites for which MS/MS data were acquired. We demonstrate, for the first time, that the integrated application of both CID and higher-energy collisional dissociation ion activation methods, multiple different activation energies and narrow precursor ion m/z ranges of 100 or 300 for acquisition of MS/MS spectra provide complementary information and increases the number of unique metabolites for which MS/MS data is acquired. The strategies herein provide a different approach for data acquisition to increase the number of unique MS/MS mass spectra acquired for metabolite annotation purposes in non-targeted metabolomics studies. MS/MS data are available on request from the corresponding author. Keywords Metabolite annotation Metabolite identification MS/MS CID HCD Orbitrap

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