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Id2 regulates hyporesponsive invariant natural killer T cells
Author(s) -
Stradner Martin H,
Cheung Kitty P,
Lasorella Anna,
Goldrath Ananda W,
D'Cruz Louise M
Publication year - 2016
Publication title -
immunology and cell biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.999
H-Index - 104
eISSN - 1440-1711
pISSN - 0818-9641
DOI - 10.1038/icb.2016.19
Subject(s) - invariant (physics) , natural killer t cell , microbiology and biotechnology , immunology , immune system , biology , mathematics , t cell , mathematical physics
While the invariant natural killer T (iNKT)‐cell response to primary stimulation with the glycolipid, α‐galactosylceramide (αGalCer), is robust, the secondary response to this stimulus is muted resulting in a hyporesponsive state characterized by anti‐inflammatory interleukin‐10 (IL‐10) production and high expression of programmed cell death 1 (PD1) and neuropilin 1 (NRP1). The E protein transcription factors and their negative regulators, the Id proteins, have previously been shown to regulate iNKT cell thymic development, subset differentiation and peripheral survival. Here, we provide evidence that the expression of the transcriptional regulator Id2 is downregulated upon stimulation of iNKT cells with their cognate antigen. Moreover, loss of Id2 expression by iNKT cells resulted in a hyporesponsive state, with splenic Id2‐deficient iNKT cells expressing low levels of TBET, high levels of PD1 and NRP1 and production of IL‐10 upon stimulation. We propose that downregulation of Id2 expression is an essential component of induction of the anti‐inflammatory, hyporesponsive state in iNKT cells.