Implementation of mass cytometry as a tool for mechanism of action studies in inflammatory bowel disease

Christopher J. Tyler, Tamara Pérez-Jeldres, Erik Ehinger, Brian Capaldo, Thangaraj Karuppuchamy, Joshua D. Boyer, Derek Patel, Parambir Dulai, Brigid S. Boland, Joanne Lannigan, Lars Eckmann, Peter B. Ernst, William J. Sandborn, Samuel B. Ho, Jesús Rivera-Nieves*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Background: Novel therapeutics for inflammatory bowel disease (IBD) are under development, yet mechanistic readouts at the tissue level are lacking. Techniques to assess intestinal immune composition could represent a valuable tool for mechanism of action (MOA) studies of novel drugs. Mass cytometry enables analysis of intestinal inflammatory cell infiltrate and corresponding molecular fingerprints with unprecedented resolution. Here, we aimed to optimize the methodology for isolation and cryopreservation of cells from intestinal tissue to allow for the potential implementation of mass cytometry in MOA studies. Methods: We investigated key technical issues, including minimal tissue requirements, cell isolation protocols, and cell storage, using intestinal biopsies and peripheral blood from healthy individuals. High-dimensional mass cytometry was employed for the analyses of biopsy-derived intestinal cellular subsets. Results: Dithiothreitol and mechanical dissociation decreased epithelial cell contamination and allowed for isolation of adequate cell numbers from 2 to 4 colonic or ileal biopsies (6 × 104±2 × 104) after a 20-minute collagenase digestion, allowing for reliable detection of most major immune cell subsets. Biopsies and antibody-labeled mononuclear cells could be cryopreserved for later processing and acquisition (viability > 70%; P < 0.05). Conclusions: Mass cytometry represents a unique tool for deep immunophenotyping intestinal cell composition. This technique has the potential to facilitate analysis of drug actions at the target tissue by identifying specific cellular subsets and their molecular signatures. Its widespread implementation may impact not only IBD research but also other gastrointestinal conditions where inflammatory cells play a role in pathogenesis.

Original languageEnglish (US)
Pages (from-to)2366-2376
Number of pages11
JournalInflammatory bowel diseases
Volume24
Issue number11
DOIs
StatePublished - Nov 1 2018
Externally publishedYes

Keywords

  • Crohn's disease
  • CyTOF
  • Lamina propria
  • Randomized control trials
  • Ulcerative colitis

ASJC Scopus subject areas

  • Immunology and Allergy
  • Gastroenterology

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