Proteoform‐Selective Imaging of Tissues Using Mass Spectrometry **

Abstract: Unraveling the complexity of biological systems relies on the development of new approaches for spatially resolved proteoform‐specific analysis of the proteome. Herein, we employ nanospray desorption electrospray ionization mass spectrometry imaging (nano‐DESI MSI) for the proteoform‐selective imaging of biological tissues. Nano‐DESI generates multiply charged protein ions, which is advantageous for their structural characterization using tandem mass spectrometry (MS/MS) directly on the tissue. Proof‐of‐concept experiments demonstrate that nano‐DESI MSI combined with on‐tissue top‐down proteomics is ideally suited for the proteoform‐selective imaging of tissue sections. Using rat brain tissue as a model system, we provide the first evidence of differential proteoform expression in different regions of the brain.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Proteoform‐Selective Imaging of Tissues Using Mass Spectrometry ** ; day:18 ; month:05 ; year:2022 ; extent:1
Angewandte Chemie ; (18.05.2022) (gesamt 1)

Creator
Yang, Manxi
Hu, Hang
Su, Pei
Thomas, Paul M.
Camarillo, Jeannie M.
Greer, Joseph B.
Early, Bryan P.
Fellers, Ryan T.
Kelleher, Neil L.
Laskin, Julia

DOI
10.1002/ange.202200721
URN
urn:nbn:de:101:1-2022051915025084478474
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:32 AM CEST

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Associated

  • Yang, Manxi
  • Hu, Hang
  • Su, Pei
  • Thomas, Paul M.
  • Camarillo, Jeannie M.
  • Greer, Joseph B.
  • Early, Bryan P.
  • Fellers, Ryan T.
  • Kelleher, Neil L.
  • Laskin, Julia

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