Deciphering lipid structures based on platform-independent decision rules

Jürgen Hartler, Alexander Triebl, Andreas Ziegl, Martin Trötzmüller, Gerald N Rechberger, Oana Alina Zeleznik, Kathrin A Zierler, Federico Torta, Amaury Cazenave-Gassiot, Markus R Wenk, Alexander Fauland, Craig E Wheelock, Aaron M Armando, Oswald Quehenberger, Qifeng Zhang, Michael JO Wakelam, Guenter Haemmerle, Friedrich Spener, Harald C Köfeler, Gerhard G Thallinger

    Research output: Contribution to conferencePosterpeer-review

    Abstract

    LC-MS is the method of choice to measure quantitative changes of hundreds of lipids in complex mixtures simultaneously. However,many lipid species are isobaric, resulting inambiguities about the true identity of the lipid in MS1 data. MSn spectra carry the potential to elucidate many structural features of lipid species: the lipid class, their constituent fatty acids, and in most cases the sn-position. However, MSn spectra of a lipid can vary tremendously, because the fragmentation process depends on parameters such as mass spectrometer used, collision energy, and adduct ions. As currently available tools use static databases containing fragment masses,and are as such limited to specific instrumental-setups, we developed a flexible algorithm for automatic identification of lipid structures.

    Original languageEnglish
    Publication statusPublished - Nov 2017
    EventEuropean Summit of Industrial Biotechnology: esib 2017 - Messe, Graz, Austria
    Duration: 14 Nov 201716 Nov 2017

    Conference

    ConferenceEuropean Summit of Industrial Biotechnology
    Abbreviated titleESIB 2017
    Country/TerritoryAustria
    CityGraz
    Period14/11/1716/11/17

    Keywords

    • Algorithms
    • Animals
    • Chromatography, Liquid
    • Lipids
    • Liver
    • Mice
    • Molecular Structure
    • Reproducibility of Results
    • Sensitivity and Specificity
    • Tandem Mass Spectrometry
    • Journal Article
    • Lipidomics
    • High-throughput screening
    • Mass spectrometry
    • Software
    • Lipid fragmentation
    • Decision rules

    Fields of Expertise

    • Human- & Biotechnology
    • Information, Communication & Computing

    Treatment code (Nähere Zuordnung)

    • Application

    Cooperations

    • BioTechMed-Graz

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