Tonic LAT-HDAC7 Signals Sustain Nur77 and Irf4 Expression to Tune Naive CD4 T Cells.
Tonic LAT-HDAC7 Signals Sustain Nur77 and Irf4 Expression to Tune Naive CD4 T Cells.
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DOI:
10.1016/j.celrep.2017.04.076
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发表时间:
2017-05-23
期刊:
影响因子:
8.8
通讯作者:
Roose JP
中科院分区:
文献类型:
--
作者:
Myers DR;Lau T;Markegard E;Lim HW;Kasler H;Zhu M;Barczak A;Huizar JP;Zikherman J;Erle DJ;Zhang W;Verdin E;Roose JP
CD4+ T cells differentiate into T helper cell subsets in feed-forward manners with synergistic signals from the T cell receptor (TCR), cytokines, and lineage-specific transcription factors. Naïve CD4+ T cells avoid spontaneous engagement of feed-forward mechanisms but retain a prepared state. T cells lacking the adapter molecule LAT demonstrate impaired TCR-induced signals yet cause a spontaneous lymphoproliferative T helper 2 (TH2) cell syndrome in mice. Thus, LAT constitutes an unexplained maintenance cue. Here we demonstrate that tonic signals through LAT constitutively export the repressor HDAC7 from the nucleus of CD4+ T cells. Without such tonic signals, HDAC7 target genes Nur77 and Irf4 are repressed. We reveal that Nur77 suppresses CD4+ T cell proliferation and uncover a suppressive role for Irf4 in TH2 polarization; halving Irf4 gene-dosage leads to increases in GATA3+ and IL4+ cells. Our studies reveal that naïve CD4+ T cells are dynamically tuned by tonic LAT-HDAC7 signals.
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影响因子:
4.4
作者:
Kasler, Herbert G.;Young, Bryan D.;Verdin, Eric
通讯作者:
Verdin, Eric
DOI:
10.1084/jem.20091442
发表时间:
2009-08-03
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Locksley RM
通讯作者:
Locksley RM
影响因子:
32.4
作者:
Bird, JJ;Brown, DR;Reiner, SL
通讯作者:
Reiner, SL
影响因子:
64.8
作者:
通讯作者:
--
影响因子:
8.7
作者:
Biswas PS;Bhagat G;Pernis AB
通讯作者:
Pernis AB