Transcriptional architecture and chromatin landscape of the core circadian clock in mammals.
Transcriptional architecture and chromatin landscape of the core circadian clock in mammals.
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哺乳动物核心昼夜节律的转录结构和染色质景观。
DOI:
10.1126/science.1226339
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发表时间:
2012-10-19
期刊:
影响因子:
--
通讯作者:
Takahashi JS
中科院分区:
文献类型:
--
作者:
Koike N;Yoo SH;Huang HC;Kumar V;Lee C;Kim TK;Takahashi JS
The mammalian circadian clock involves a transcriptional feedback loop in which CLOCK and BMAL1 activate the Period and Cryptochrome genes, which then feedback and repress their own transcription. We have interrogated the transcriptional architecture of the circadian transcriptional regulatory loop on a genome scale in mouse liver and find a stereotyped, time-dependent pattern of transcription factor binding, RNA polymerase II (RNAPII) recruitment, RNA expression and chromatin states. We find that the circadian transcriptional cycle of the clock consists of three distinct phases — a poised state, a coordinated de novo transcriptional activation state, and a repressed state. Interestingly only 22% of mRNA cycling genes are driven by de novo transcription, suggesting that both transcriptional and post-transcriptional mechanisms underlie the mammalian circadian clock. We also find that circadian modulation of RNAPII recruitment and chromatin remodeling occurs on a genome-wide scale far greater than that seen previously by gene expression profiling.
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DOI:
10.1126/science.1198125
发表时间:
2011-03-11
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Feng D;Liu T;Sun Z;Bugge A;Mullican SE;Alenghat T;Liu XS;Lazar MA
通讯作者:
Lazar MA
影响因子:
64.5
作者:
Guenther, Matthew G.;Levine, Stuart S.;Young, Richard A.
通讯作者:
Young, Richard A.
影响因子:
16.8
作者:
Ameur, Adam;Zaghlool, Ammar;Feuk, Lars
通讯作者:
Feuk, Lars
影响因子:
64.8
作者:
通讯作者:
--
DOI:
10.1126/science.1195027
发表时间:
2010-12-03
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Bass J;Takahashi JS
通讯作者:
Takahashi JS