Reciprocal regulation of RORγt acetylation and function by p300 and HDAC1.

Abstract:

:T helper 17 (Th17) cells not only play critical roles in protecting against bacterial and fungal infections but are also involved in the pathogenesis of autoimmune diseases. The retinoic acid-related orphan receptor (RORγt) is a key transcription factor involved in Th17 cell differentiation through direct transcriptional activation of interleukin 17(A) (IL-17). How RORγt itself is regulated remains unclear. Here, we report that p300, which has histone acetyltransferase (HAT) activity, interacts with and acetylates RORγt at its K81 residue. Knockdown of p300 downregulates RORγt protein and RORγt-mediated gene expression in Th17 cells. In addition, p300 can promote RORγt-mediated transcriptional activation. Interestingly, the histone deacetylase (HDAC) HDAC1 can also interact with RORγt and reduce its acetylation level. In summary, our data reveal previously unappreciated posttranslational regulation of RORγt, uncovering the underlying mechanism by which the histone acetyltransferase p300 and the histone deacetylase HDAC1 reciprocally regulate the RORγt-mediated transcriptional activation of IL-17.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Wu Q,Nie J,Gao Y,Xu P,Sun Q,Yang J,Han L,Chen Z,Wang X,Lv L,Tsun A,Shen J,Li B

doi

10.1038/srep16355

subject

Has Abstract

pub_date

2015-11-09 00:00:00

pages

16355

issn

2045-2322

pii

srep16355

journal_volume

5

pub_type

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