Laser Ablation Electrospray Ionization for Atmospheric Pressure Molecular Imaging Mass Spectrometry

  • Peter Nemes
  • Akos Vertes
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 656)

Abstract

Laser ablation electrospray ionization (LAESI) is a novel method for the direct imaging of biological tissues by mass spectrometry. By performing ionization in the ambient environment, this technique enables in vivo studies with potential for single-cell analysis. A unique aspect of LAESI mass spectrometric imaging (MSI) is depth profiling that, in combination with lateral imaging, permits 3D molecular imaging for the first time under native conditions. With current lateral and depth resolutions of ∼100 and ∼40 μm, respectively, LAESI MSI helps to explore the molecular architecture of live tissues.

Key words

Mass spectrometry imaging ambient direct analysis depth profiling three-dimensional in vivo tissue imaging 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Peter Nemes
    • 1
  • Akos Vertes
    • 1
  1. 1.Department of ChemistryW. M. Keck Institute for Proteomics Technology and Applications, George Washington UniversityWashingtonUSA

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