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Related Concept Videos

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Updated: Feb 27, 2026

Sample Preparation for Single Cell Mass Spectrometry Metabolomics Studies: Combined Cell Washing, Quenching, Drying, and Storage
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Sample Preparation and Analysis for Imaging Mass Spectrometry.

Genea Edwards1,2, Annia Mesa3, Robert I Vazquez-Padron3

  • 1Bascom Palmer Eye Institute, University of Miami, Miami, FL, USA.

Methods in Molecular Biology (Clifton, N.J.)
|June 30, 2017
PubMed
Summary
This summary is machine-generated.

Imaging mass spectrometry (IMS) maps lipids in atherosclerotic plaques. This technique reveals the spatial distribution of cholesterol and phosphatidylcholine species in murine heart aortic valves, aiding disease research.

Keywords:
BiomarkerImaging mass spectrometry (IMS)Matrix-assisted laser desorption ionization (MALDI)MetaboliteTime-of-flight (TOF)

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Area of Science:

  • Biomedical Science
  • Analytical Chemistry
  • Molecular Imaging

Background:

  • Imaging mass spectrometry (IMS) is an advanced technique for quantifying biomolecules within tissue sections.
  • IMS provides spatial distribution data for lipids and proteins directly from a single tissue sample.
  • Combining IMS with histology enhances biomolecule distribution analysis, including cell type and subcellular localization.

Purpose of the Study:

  • To describe the application of Matrix-Assisted Laser Desorption/Ionization (MALDI) Time-Of-Flight/Time-Of-Flight (TOF/TOF) IMS.
  • To analyze cholesterol and phosphatidylcholine species in atherosclerotic plaques from murine heart aortic valves.
  • To detail the methodology for IMS analysis of tissue samples.

Main Methods:

  • Utilized MALDI TOF/TOF mass spectrometry for high-resolution molecular imaging.
  • Prepared murine heart aortic valve tissue sections for IMS analysis.
  • Acquired spectral data and generated color-coded images based on molecular characteristics.

Main Results:

  • Successfully mapped the spatial distribution of various cholesterol and phosphatidylcholine species within atherosclerotic plaques.
  • Demonstrated the capability of MALDI TOF/TOF IMS to differentiate lipid species in complex biological tissues.
  • Generated detailed molecular images of lipid distribution in the context of atherosclerotic lesions.

Conclusions:

  • MALDI TOF/TOF IMS is effective for analyzing lipid species in atherosclerotic plaques.
  • The described methodology provides a robust approach for molecular imaging of lipids in cardiovascular disease research.
  • This technique offers valuable insights into the role of specific lipids in atherosclerosis progression.