Invariant NKT Cells in Hyperplastic Skin Induce a Local Immune Suppressive Environment by IFN-γ Production
- 18 December 2009
- journal article
- research article
- Published by The American Association of Immunologists in The Journal of Immunology
- Vol. 184 (3), 1242-1250
- https://doi.org/10.4049/jimmunol.0902191
Abstract
NKT cells can promote or inhibit adaptive immune responses. Cutaneous immunity is tightly regulated by cooperation between innate and adaptive immune processes, but the role of NKT cells in regulating cutaneous immunity is largely unknown. In this study, we show, in a mouse model, that skin-infiltrating CD1d-restricted NKT cells in HPV16-E7 transgenic hyperplastic skin produce IFN-γ, which can prevent rejection of HPV16-E7–expressing skin grafts. Suppression of graft rejection is associated with the accumulation of CD1dhi-expressing CD11c+F4/80hi myeloid cells in hyperplastic skin. Blockade of CD1d, removal of NKT cells, or local inhibition of IFN-γ signaling is sufficient to restore immune-mediated graft rejection. Thus, inhibition of NKT cell recruitment or function may enable effective immunity against tumor and viral Ags expressed in epithelial cells.This publication has 45 references indexed in Scilit:
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