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Conserved gd T cell selection by BTNL proteins limits progression of human inflammatory bowel disease

  • GSTT Guy's and St Thomas' NHS Foundation Trust
  • Immunosurveillance laboratory
  • Francis Crick Institute
  • Gastroenterology Department
  • King's College London
  • National Institute for Health and Care Research
  • GammaDelta Therapeutics Ltd
  • Newcastle University
  • Royal Victoria Infirmary
  • Department of Medicine
  • Department Medical and Molecular Genetics

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

Murine intraepithelial gd T cells include distinct tissue-protective cells selected by epithelial butyrophilin-like (BTNL) heteromers. To determine whether this biology is conserved in humans, we characterized the colonic gd T cell compartment, identifying a diverse repertoire that includes a phenotypically distinct subset coexpressing T cell receptor Vg4 and the epithelium-binding integrin CD103. This subset was disproportionately diminished and dysregulated in inflammatory bowel disease, whereas on-treatment CD103+gd T cell restoration was associated with sustained inflammatory bowel disease remission. Moreover, CD103+Vg4+ cell dysregulation and loss were also displayed by humans with germline BTNL3/BTNL8 hypomorphism, which we identified as a risk factor for penetrating Crohn's disease (CD). Thus, BTNL-dependent selection and/or maintenance of distinct tissue-intrinsic gd T cells appears to be an evolutionarily conserved axis limiting the progression of a complex, multifactorial, tissue-damaging disease of increasing global incidence.

Original languageEnglish
Article numberadh0301
JournalScience
Volume381
Issue number6663
DOIs
Publication statusPublished - 15 Sept 2023

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