A role for IL-10 in the transcriptional regulation of Roquin-1.
A role for IL-10 in the transcriptional regulation of Roquin-1.
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DOI:
10.1016/j.gene.2014.07.056
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发表时间:
2014-10-01
期刊:
影响因子:
3.5
通讯作者:
Klein JR
中科院分区:
文献类型:
--
作者:
Schaefer JS;Montufar-Solis D;Klein JR
Roquin-1, a RING finger E3 ubiquitin ligase, functions as a modulator of inflammation; however, nothing is known about how Rc3h1 expression is regulated. Here, we describe an opposing relationship between Roquin-1 and the IL-17 proinflammatory cytokine by demonstrating that enforced expression of Rc3h1 restricts Il17a expression, and that exposure of T cells to IL-10, a cytokine with immunosuppressive activity, increases Rc3h1 expression. Luciferase reporter assays conducted using eight transcription factor plasmids (STAT1, STAT3, STAT5, GATA2, c-Rel, IKZF1, IKZF2, and IKZF3) demonstrated that STAT1, STAT3, GATA2, and c-Rel increased Rc3h1 promoter activity, whereas IKZF2 decreased activity. Gene expression of those five transcription factors increased in T cells exposed to IL-10. Transcription factor-specific siRNAs suppressed the IL-10 effect on Rc3h1 transcription. These findings identify a role for IL-10 in regulating Rc3h1 transcription, and they have implications for understanding how Roquin-1 controls the immune response.
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