Journal
CLINICAL AND EXPERIMENTAL IMMUNOLOGY
Volume 207, Issue 2, Pages 141-148Publisher
OXFORD UNIV PRESS
DOI: 10.1093/cei/uxab004
Keywords
Epstein-Barr virus; interleukin-18; mucosal-associated innate T cell
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Funding
- National Center for Child Health and Development [Seiiku 30S-3]
- [19k08336]
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MAIT cells are highly activated in the blood of patients with EBV-T/NK-LPD, and their activation levels correlate with disease severity and plasma IL-18 levels. Stimulation of healthy peripheral blood mononuclear cells with EBV enhances the activation level of MAIT cells, which can be further enhanced by exogenous IL-18. Thus, IL-18-stimulated MAIT cells may be involved in the immunopathogenesis of EBV-T/NK-LPD.
Mucosal-associated invariant T (MAIT) cells are a type of innate immune cells that protect against some infections. However, the involvement of MAIT cells in Epstein-Barr virus-associated T/natural killer cell lymphoproliferative diseases (EBV-T/NK-LPD) is unclear. In this study, we found that MAIT cells were highly activated in the blood of patients with EBV-T/NK-LPD. MAIT cell activation levels correlated with disease severity and plasma IL-18 levels. Stimulation of healthy peripheral blood mononuclear cells with EBV resulted in activation of MAIT cells, and this activation level was enhanced by exogenous IL-18. MAIT cells stimulated by IL-18 might thus be involved in the immunopathogenesis of EBV-T/NK-LPD.
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