Holistic characterization of a salmonella typhimurium infection model using integrated molecular imaging.
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Accepted version
Accepted version
Author(s)
Type
Journal Article
Abstract
A more complete and holistic view on host-microbe interactions is needed to understand the physiological and cellular barriers that affect the efficacy of drug treatments and allow the discovery and development of new therapeutics. Here, we developed a multimodal imaging approach combining histopathology with mass spectrometry imaging (MSI) and same section imaging mass cytometry (IMC) to study the effects of Salmonella Typhimurium infection in the liver of a mouse model using the S. Typhimurium strains SL3261 and SL1344. This approach enables correlation of tissue morphology and specific cell phenotypes with molecular images of tissue metabolism. IMC revealed a marked increase in immune cell markers and localization in immune aggregates in infected tissues. A correlative computational method (network analysis) was deployed to find metabolic features associated with infection and revealed metabolic clusters of acetyl carnitines, as well as phosphatidylcholine and phosphatidylethanolamine plasmalogen species, which could be associated with pro-inflammatory immune cell types. By developing an IMC marker for the detection of Salmonella LPS, we were further able to identify and characterize those cell types which contained S. Typhimurium.
Date Issued
2021-12-01
Date Acceptance
2021-10-15
Citation
Journal of the American Society for Mass Spectrometry, 2021, 32 (12), pp.2791-2802
ISSN
1044-0305
Publisher
American Chemical Society
Start Page
2791
End Page
2802
Journal / Book Title
Journal of the American Society for Mass Spectrometry
Volume
32
Issue
12
Copyright Statement
t © 2021 American Society for Mass Spectrometry. Published by American Chemical Society. All rights reserved.
RIGHTS & PERMISSIONS
RIGHTS & PERMISSIONS
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/34767352
Subjects
Salmonella infection
imaging mass cytometry
mass spectrometry imaging
multimodal data integration
network analysis
Publication Status
Published
Coverage Spatial
United States