Analysis of colon-infiltrating γδ T cells in chronic inflammatory bowel disease and in colitis-associated cancer

Elettra Unti, Marta Di Simone, Elena Lo Presti, Francesco Dieli, Serena Meraviglia, Salvatore Vieni, Filippo Mocciaro, Elettra Unti, Roberto Di Mitri, Nunzia Scibetta, Anna Maria Corsale, Filippo Mocciaro

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Inflammatory bowel disease (IBD) remains a global health problem with a significant percentage of patients progressing to chronic inflammation and colitis-associated cancer (CAC). Whether or not γδ T cells contribute to initiation and maintenance of inflammation in IBD and in the development of CAC is not known. We have evaluated the frequency, phenotype, and functions of γδ T cells among tissue-infiltrating lymphocytes in healthy donors and IBD and CAC patients. Results show that Vδ1 T cells are the dominant γδ T-cell population in healthy tissue, whereas Vδ2 T significantly abound in chronic IBD. Vδ2 T cells produce more IFN-γ, TNF-α, and IL-17 than Vδ1 T cells in chronic inflamed IBD. In CAC patients no significant cytokine production was detected in tissue-resident Vδ1 T cells, but Vδ2 T cells produced remarkable amounts of IFN-γ and TNF-α; these data were confirmed by the analysis of an independent cohort of IBD transcriptomes. Moreover, transcriptomes of IBD patients revealed a clear-cut clusterization of genes related with the maintenance of the inflammatory status. In conclusion, our results demonstrating that Vδ2 T cells have a proinflammatory profile in chronic IBD are suggestive of their participation in IBD and CAC pathogenesis.
Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalJournal of Leukocyte Biology
Publication statusPublished - 2020

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology
  • Cell Biology

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