期刊
NATURE IMMUNOLOGY
卷 9, 期 11, 页码 1297-1306出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ni.1663
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- Intramural NIH HHS [Z01 AI000432-23, Z01 AI000354-25] Funding Source: Medline
The molecular mechanisms underlying the differentiation of interleukin 17-producing T helper cells (T-H-17 cells) are still poorly understood. Here we show that optimal transcription of the gene encoding interleukin 17 (Il17) required a 2-kilobase promoter and at least one conserved noncoding (enhancer) sequence, CNS-5. Both cis-regulatory elements contained regions that bound the transcription factors ROR gamma t and Runx1. Runx1 influenced T-H-17 differentiation by inducing ROR gamma t expression and by binding to and acting together with ROR gamma t during Il17 transcription. However, Runx1 also interacts with the transcription factor Foxp3, and this interaction was necessary for the negative effect of Foxp3 on T-H-17 differentiation. Thus, our data support a model in which the differential association of Runx1 with Foxp3 and with ROR gamma t regulates T-H-17 differentiation.
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