Dysregulation of γδ intraepithelial lymphocytes precedes Crohn’s disease–like ileitis

Authors: Weili Xu, Natasha B. Golovchenko, Irving U. Martínez-Vargas, Andrew Fong, Prateeksha Rout, Sajan Achi, Edie B. Bucar, Jonathan J. Hsieh, Kaylynn J. Vidmar, Lanjing Zhang, Alexandros D. Polydorides, Immo Prinz, George Kollias, Mark R. Frey, Theresa T. Pizarro, Michael P. Verzi, Karen L. Edelblum

Published: 2025-03-21

DOI: 10.1126/sciimmunol.adk7429

Source: Full article


Abstract

Intraepithelial lymphocytes expressing the γδ T cell receptor (γδ IELs) provide immunosurveillance of the intestinal barrier but are reduced in patients with active Crohn’s disease (CD). Here, we report an underappreciated role for γδ IELs in maintaining immunological tolerance during the onset and progression of CD-like ileitis using TNF