Dynamic biochemical tissue analysis detects functional L-selectin ligands on colon cancer tissues

Grady E. Carlson, Eric W. Martin, Venktesh S. Shirure, Ramiro Malgor, Vicente A. Resto, Douglas J. Goetz, Monica M. Burdick

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

A growing body of evidence suggests that L-selectin ligands presented on circulating tumor cells facilitate metastasis by binding L-selectin presented on leukocytes. Commonly used methods for detecting L-selectin ligands on tissues, e.g., immunostaining, are performed under static, no-flow conditions. However, such analysis does not assay for functional Lselectin ligands, specifically those ligands that promote adhesion under shear flow conditions. Recently our lab developed a method, termed dynamic biochemical tissue analysis (DBTA), to detect functional selectin ligands in situ by probing tissues with L-selectin-coated microspheres under hemodynamic flow conditions. In this investigation, DBTA was used to probe human colon tissues for L-selectin ligand activity. The detection of L-selectin ligands using DBTA was highly specific. Furthermore, DBTA reproducibly detected functional Lselectin ligands on diseased, e.g., cancerous or inflamed, tissues but not on noncancerous tissues. In addition, DBTA revealed a heterogeneous distribution of functional L-selectin ligands on colon cancer tissues. Most notably, detection of L-selectin ligands by immunostaining using HECA-452 antibody only partially correlated with functional L-selectin ligands detected by DBTA. In summation, the results of this study demonstrate that DBTA detects functional selectin ligands to provide a unique characterization of pathological tissue.

Original languageEnglish (US)
Article numbere0173747
JournalPloS one
Volume12
Issue number3
DOIs
StatePublished - Mar 2017

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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    Carlson, G. E., Martin, E. W., Shirure, V. S., Malgor, R., Resto, V. A., Goetz, D. J., & Burdick, M. M. (2017). Dynamic biochemical tissue analysis detects functional L-selectin ligands on colon cancer tissues. PloS one, 12(3), [e0173747]. https://doi.org/10.1371/journal.pone.0173747