Toponome mapping in prostate cancer: detection of 2000 cell surface protein clusters in a single tissue section and cell type specific annotation by using a three symbol code

J Proteome Res. 2009 Jun;8(6):2696-707. doi: 10.1021/pr800944f.

Abstract

The toponome imaging technology MELC/TIS was applied to analyze prostate cancer tissue. By cyclical imaging procedures, we detected 2100 cell surface protein clusters in a single tissue section. This study provides the whole data set, a new kind of high dimensional data space, solely based on the structure-bound architecture of an in situ protein network, a putative fraction of the tissue code of prostate cancer. It is visualized as a colored mosaic composed of distinct protein clusters, together forming a motif expressed exclusively on the cell surface of neoplastic cells in prostate acini. Cell type specific expression of this motif, found in this preliminary study, suggests that high-throughput toponome analyses of a larger number of cases will provide insight into disease specific protein networks.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antigens, CD / analysis
  • Computational Biology
  • Epithelial Cells / chemistry
  • Epithelial Cells / metabolism
  • Histocytochemistry
  • Humans
  • Image Processing, Computer-Assisted / methods*
  • Male
  • Membrane Proteins / analysis*
  • Microscopy, Fluorescence
  • Middle Aged
  • Multiprotein Complexes / analysis
  • Neoplasm Proteins / analysis*
  • Peptide Library
  • Prostate / chemistry
  • Prostate / cytology
  • Prostatic Neoplasms / chemistry*
  • Protein Interaction Mapping / methods*
  • Proteomics / methods*

Substances

  • Antigens, CD
  • Membrane Proteins
  • Multiprotein Complexes
  • Neoplasm Proteins
  • Peptide Library