Prostaglandin E2 suppresses antifungal immunity by inhibiting interferon regulatory factor 4 function and interleukin-17 expression in T cells.

Prostaglandin E2 suppresses antifungal immunity by inhibiting interferon regulatory factor 4 function and interleukin-17 expression in T cells.
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DOI:
10.1016/j.immuni.2012.02.013
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发表时间:
2012-04-20
期刊:
影响因子:
32.4
通讯作者:
Datta SK
Datta SK
中科院分区:
医学1区
文献类型:
--
作者:
Valdez PA;Vithayathil PJ;Janelsins BM;Shaffer AL;Williamson PR;Datta SK

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T helper 17 (Th17) cells play an important role in mucosal host defense through production of the signature cytokines IL-17 and IL-22. Prostaglandin E2 (PGE2) has been shown to enhance IL-17 production by mature Th17 cells. However, when present during Th17 differentiation, we found that PGE2 inhibited the transcription factor IRF4 and suppressed production of IL-17 but not IL-22. We show that IRF4 was required for IL-17 expression but inhibited IL-22 expression, highlighting the potential for discordant regulation of these two cytokines in Th17 cells. The pathogenic fungus, Cryptococcus neoformans, produces PGE2 and we found that it uses PGE2- and IRF4-dependent mechanisms to specifically inhibit induction of IL-17 during Th17 differentiation. Blockade of host PGE2 during infection led to increased IL-17 production from CD4+T cells and increased survival of mice. These findings suggest that host- or pathogen-derived PGE2 can act directly on Th17 cells during differentiation to inhibit IL-17-dependent anti-microbial responses.
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