On the existence and functionality of topologically associating domains.

On the existence and functionality of topologically associating domains.
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DOI:
10.1038/s41588-019-0561-1
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发表时间:
2020-01
期刊:
影响因子:
30.8
通讯作者:
Phillips-Cremins JE
Phillips-Cremins JE
中科院分区:
生物学1区
文献类型:
--
作者:
Beagan JA;Phillips-Cremins JE

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多种真核生物的基因组折叠成更高阶的染色质结构域。拓扑关联域 (TAD) 最初是在低分辨率 Hi-C 热图中根据经验发现的,代表了数百万个细胞的整体平均相互作用频率。在这里,我们讨论高分辨率 Hi-C、单细胞成像实验和功能遗传学研究的最新进展,这些研究为基因组的层次结构-功能关系提供了一个日益复杂的视图。在这些新发现的基础上,我们根据对染色质结构域的结构、机制和功能特性的新知识更新了不同类别染色质结构域的定义。
Genomes across a wide range of eukaryotic organisms fold into higher-order chromatin domains. Topologically associating domains (TADs) were originally discovered empirically in low-resolution Hi-C heat maps representing ensemble average interaction frequencies from millions of cells. Here, we discuss recent advances in high-resolution Hi-C, single-cell imaging experiments, and functional genetic studies, which provide an increasingly complex view of the genome’s hierarchical structure–function relationship. On the basis of these new findings, we update the definitions of distinct classes of chromatin domains according to emerging knowledge of their structural, mechanistic and functional properties.
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