Long noncoding RNA as modular scaffold of histone modification complexes.

Long noncoding RNA as modular scaffold of histone modification complexes.
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DOI:
10.1126/science.1192002
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发表时间:
2010-08-06
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Chang HY
Chang HY
中科院分区:
其他
文献类型:
--
作者:
Tsai MC;Manor O;Wan Y;Mosammaparast N;Wang JK;Lan F;Shi Y;Segal E;Chang HY

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长基因间非编码RNA(lincRNA)调节染色质状态和表观遗传。在这里,我们表明,lincRNA HOTAIR作为至少两个不同的组蛋白修饰复合物的支架。HOTAIR的5′结构域结合多梳抑制复合物2(PRC 2),而HOTAIR的3′结构域结合LSD 1/CoREST/REST复合物。拴系两种不同复合物的能力使得能够进行PRC 2和LSD 1的RNA介导的组装,并协调PRC 2和LSD 1靶向染色质,用于偶联组蛋白H3赖氨酸27甲基化和赖氨酸4去甲基化。我们的研究结果表明,lincRNA可以作为支架,通过提供结合表面组装选择组蛋白修饰酶,从而指定靶基因上的组蛋白修饰模式。
Long intergenic noncoding RNAs (lincRNAs) regulate chromatin states and epigenetic inheritance. Here we show that the lincRNA HOTAIR serves as a scaffold for at least two distinct histone modification complexes. A 5′ domain of HOTAIR binds Polycomb Repressive Complex 2 (PRC2) while a 3′ domain of HOTAIR binds the LSD1/CoREST/REST complex. The ability to tether two distinct complexes enables RNA-mediated assembly of PRC2 and LSD1, and coordinates targeting of PRC2 and LSD1 to chromatin for coupled histone H3 lysine 27 methylation and lysine 4 demethylation. Our results suggest that lincRNAs may serve as scaffolds by providing binding surfaces to assemble select histone modification enzymes, and thereby specify the pattern of histone modifications on target genes.
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