Trapped ion mobility spectrometry and PASEF enable in-depth lipidomics from minimal sample amounts

Catherine G. Vasilopoulou, Karolina Sulek, Andreas David Brunner, Ningombam Sanjib Meitei, Ulrike Schweiger-Hufnagel, Sven W. Meyer, Aiko Barsch, Matthias Mann*, Florian Meier

*Corresponding author af dette arbejde
137 Citationer (Scopus)

Abstract

A comprehensive characterization of the lipidome from limited starting material remains very challenging. Here we report a high-sensitivity lipidomics workflow based on nanoflow liquid chromatography and trapped ion mobility spectrometry (TIMS). Taking advantage of parallel accumulation–serial fragmentation (PASEF), we fragment on average 15 precursors in each of 100 ms TIMS scans, while maintaining the full mobility resolution of co-eluting isomers. The acquisition speed of over 100 Hz allows us to obtain MS/MS spectra of the vast majority of isotope patterns. Analyzing 1 µL of human plasma, PASEF increases the number of identified lipids more than three times over standard TIMS-MS/MS, achieving attomole sensitivity. Building on high intra- and inter-laboratory precision and accuracy of TIMS collisional cross sections (CCS), we compile 1856 lipid CCS values from plasma, liver and cancer cells. Our study establishes PASEF in lipid analysis and paves the way for sensitive, ion mobility-enhanced lipidomics in four dimensions.

OriginalsprogEngelsk
Artikelnummer331
TidsskriftNature Communications
Vol/bind11
Udgave nummer1
ISSN2041-1722
DOI
StatusUdgivet - 1 dec. 2020
Udgivet eksterntJa

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