Frontiers in Immunology (Nov 2022)

Autologous organoid co-culture model reveals T cell-driven epithelial cell death in Crohn’s Disease

  • Nassim Hammoudi,
  • Nassim Hammoudi,
  • Sarah Hamoudi,
  • Julie Bonnereau,
  • Hugo Bottois,
  • Kevin Pérez,
  • Madeleine Bezault,
  • Déborah Hassid,
  • Déborah Hassid,
  • Victor Chardiny,
  • Céline Grand,
  • Brice Gergaud,
  • Joëlle Bonnet,
  • Leila Chedouba,
  • My-Linh Tran Minh,
  • Jean-Marc Gornet,
  • Clotilde Baudry,
  • Hélène Corte,
  • Léon Maggiori,
  • Antoine Toubert,
  • Jacqueline McBride,
  • Camille Brochier,
  • Margaret Neighbors,
  • Lionel Le Bourhis,
  • Matthieu Allez,
  • Matthieu Allez

DOI
https://doi.org/10.3389/fimmu.2022.1008456
Journal volume & issue
Vol. 13

Abstract

Read online

Lympho-epithelial interactions between intestinal T resident memory cells (Trm) and the epithelium have been associated with inflammatory bowel disease (IBD) activity. We developed ex vivo autologous organoid-mucosal T cell cocultures to functionally assess lymphoepithelial interactions in Crohn’s Disease (CD) patients compared to controls. We demonstrate the direct epithelial cell death induced by autologous mucosal T cells in CD patients but not in controls. These findings were positively correlated with T cell infiltration of the organoids. This potential was inhibited by limiting lympho-epithelial interactions through CD103 and NKG2D blocking antibodies. These data directly demonstrate for the first time the direct deleterious effect of mucosal T cells on the epithelium of CD patients. Such ex-vivo models are promising techniques to unravel the pathophysiology of these diseases and the potential mode of action of current and future therapies.

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