Glucocorticoid-induced phosphorylation by CDK9 modulates the coactivator functions of transcriptional cofactor GRIP1 in macrophages.
Glucocorticoid-induced phosphorylation by CDK9 modulates the coactivator functions of transcriptional cofactor GRIP1 in macrophages.
复制标题
糖皮质激素诱导的 CDK9 磷酸化调节巨噬细胞中转录辅因子 GRIP1 的共激活子功能
DOI:
10.1038/s41467-017-01569-2
复制
发表时间:
2017-11-23
影响因子:
16.6
通讯作者:
Rogatsky I
中科院分区:
文献类型:
--
作者:
Rollins DA;Kharlyngdoh JB;Coppo M;Tharmalingam B;Mimouna S;Guo Z;Sacta MA;Pufall MA;Fisher RP;Hu X;Chinenov Y;Rogatsky I
The glucocorticoid (GC) receptor (GR) suppresses inflammation by activating anti-inflammatory and repressing pro-inflammatory genes. GR-interacting protein-1 (GRIP1) is a GR corepressor in macrophages, however, whether GRIP1 mediates GR-activated transcription, and what dictates its coactivator versus corepressor properties is unknown. Here we report that GRIP1 loss in macrophages attenuates glucocorticoid induction of several anti-inflammatory targets, and that GC treatment of quiescent macrophages globally directs GRIP1 toward GR binding sites dominated by palindromic GC response elements (GRE), suggesting a non-redundant GRIP1 function as a GR coactivator. Interestingly, GRIP1 is phosphorylated at an N-terminal serine cluster by cyclin-dependent kinase-9 (CDK9), which is recruited into GC-induced GR:GRIP1:CDK9 hetero-complexes, producing distinct GRE-specific GRIP1 phospho-isoforms. Phosphorylation potentiates GRIP1 coactivator but, remarkably, not its corepressor properties. Consistently, phospho-GRIP1 and CDK9 are not detected at GR transrepression sites near pro-inflammatory genes. Thus, GR restricts actions of its own coregulator via CDK9-mediated phosphorylation to a subset of anti-inflammatory genes.
登录
查看更多内容
影响因子:
16.6
作者:
Coppo M;Chinenov Y;Sacta MA;Rogatsky I
通讯作者:
Rogatsky I
影响因子:
4.4
作者:
Chinenov Y;Coppo M;Gupte R;Sacta MA;Rogatsky I
通讯作者:
Rogatsky I
影响因子:
4.3
作者:
Bailey T;Krajewski P;Ladunga I;Lefebvre C;Li Q;Liu T;Madrigal P;Taslim C;Zhang J
通讯作者:
Zhang J
影响因子:
4.1
作者:
Coutinho, Agnes E.;Chapman, Karen E.
通讯作者:
Chapman, Karen E.
DOI:
10.1084/jem.20051753
发表时间:
2006-01-23
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Hammer M;Mages J;Dietrich H;Servatius A;Howells N;Cato AC;Lang R
通讯作者:
Lang R