Molecular signals of epigenetic states.

Molecular signals of epigenetic states.
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DOI:
10.1126/science.1191078
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发表时间:
2010-10-29
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Reinberg D
Reinberg D
中科院分区:
其他
文献类型:
--
作者:
Bonasio R;Tu S;Reinberg D

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表观遗传信号负责亚稳态转录状态的建立、维持和逆转,这些亚稳态转录状态是细胞“记忆”过去事件的能力的基础,例如外部环境或发育线索的变化。复杂的表观遗传状态是由几个汇聚和加强信号,包括转录因子,非编码RNA,DNA甲基化和组蛋白修饰。虽然所有这些途径都能在体内调节染色质的转录,但表观遗传信息通过细胞分裂传递的机制仍不清楚。由于表观遗传状态是亚稳定的,并且会响应适当的信号而发生变化,因此对其分子框架的更深入了解将使我们能够解决疾病中表观遗传学的失调。
Epigenetic signals are responsible for the establishment, maintenance and reversal of metastable transcriptional states that are fundamental for the cell's ability to “remember” past events, such as changes in the external environment or developmental cues. Complex epigenetic states are orchestrated by several converging and reinforcing signals, including transcription factors, non-coding RNAs, DNA methylation, and histone modifications. Although all these pathways modulate transcription from chromatin in vivo, the mechanisms by which epigenetic information is transmitted through cell division remain unclear. Because epigenetic states are metastable and change in response to the appropriate signals, a deeper understanding of their molecular framework will allow us to tackle the dysregulation of epigenetics in disease.
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