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Towards Resolving the Spatial Metabolome with Unambiguous Molecular Annotations in Complex Biological Systems by Coupling Mass Spectrometry Imaging with Structures for Lossless Ion Manipulations

Journal Article · · ChemComm
DOI:https://doi.org/10.1039/C8CC07482H· OSTI ID:1496826
 [1];  [1];  [2];  [3];  [3];  [1];  [2];  [1]
  1. Biological Sciences Division, Pacific Northwest National Laboratory; Richland; USA
  2. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory; Richland; USA
  3. Biosciences Division; Oak Ridge National Laboratory; Oak Ridge; USA

We demonstrate the coupling of liquid extraction surface analysis (LESA) to structures for lossless ion manipulations in conjunction with serpentine ultralong path with extending routing (SLIM SUPER) ion mobility-mass spectrometry (IM-MS) for the unambiguous annotation of important isomeric glycoforms in carbon-fixing communities. A major bottleneck of current mass spectrometry imaging (MSI) methods is their inability to accurately and confidently delineate amongst isomers within a single probing area. Our methodology provides gains in both sensitivity and IM resolution, while simultaneously gaining insight on the spatial distribution of these biological isomers in a mixed organism composed of moss, cyanobacteria and fungus. We envision this methodology will be broadly applicable to other mass spectrometry imaging modalities and invaluable in multiplexed, untargeted, analyses of a single probing location.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1496826
Report Number(s):
PNNL-SA-138045
Journal Information:
ChemComm, Journal Name: ChemComm Journal Issue: 3 Vol. 55; ISSN CHCOFS; ISSN 1359-7345
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English

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