Circular chromosome conformation capture (4C) uncovers extensive networks of epigenetically regulated intra- and interchromosomal interactions

被引：614

作者：

Zhao, Zhihu ^{[1
]}

Tavoosidana, Gholamreza ^{[1
]}

Sjolinder, Mikael ^{[1
]}

Gondor, Anita ^{[1
]}

Mariano, Piero ^{[1
]}

Wang, Sha ^{[1
]}

Kanduri, Chandrasekhar ^{[1
]}

Lezcano, Magda ^{[1
]}

Sandhu, Kuljeet Singh ^{[1
]}

Singh, Umashankar ^{[1
]}

Pant, Vinod ^{[1
]}

Tiwari, Vijay ^{[1
]}

Kurukuti, Sreenivasulu ^{[1
]}

Ohlsson, Rolf ^{[1
]}

机构：

[1] Uppsala Univ, Dept Genet & Dev, Evolut Biol Ctr, SE-75136 Uppsala, Sweden

来源：

NATURE GENETICS | 2006年 / 38卷 / 11期

关键词：

D O I：

10.1038/ng1891

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Accumulating evidence converges on the possibility that chromosomes interact with each other to regulate transcription in trans. To systematically explore the epigenetic dimension of such interactions, we devised a strategy termed circular chromosome conformation capture (4C). This approach involves a circularization step that enables high-throughput screening of physical interactions between chromosomes without a preconceived idea of the interacting partners. Here we identify 114 unique sequences from all autosomes, several of which interact primarily with the maternally inherited H19 imprinting control region. Imprinted domains were strongly overrepresented in the library of 4C sequences, further highlighting the epigenetic nature of these interactions. Moreover, we found that the direct interaction between differentially methylated regions was linked to epigenetic regulation of transcription in trans. Finally, the patterns of interactions specific to the maternal H19 imprinting control region underwent reprogramming during in vitro maturation of embryonic stem cells. These observations shed new light on development, cancer epigenetics and the evolution of imprinting.

引用

页码：1341 / 1347

页数：7

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