A tissue-specific self-interacting chromatin domain forms independently of enhancer-promoter interactions
A tissue-specific self-interacting chromatin domain forms independently of enhancer-promoter interactions
复制标题
组织特异性自相互作用染色质结构域的形成独立于增强子-启动子相互作用
DOI:
10.1101/234427
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Brown J
中科院分区:
文献类型:
--
作者:
Brown J
Self-interacting chromatin domains encompass genes and theircis-regulatory elements; however, the three-dimensional form a domain takes, whether this relies on enhancer–promoter interactions, and the processes necessary to mediate the formation and maintenance of such domains, remain unclear. To examine these questions, here we use a combination of high-resolution chromosome conformation capture, a non-denaturing form of fluorescence in situ hybridisation and super-resolution imaging to study a 70 kb domain encompassing the mouse α-globin regulatory locus. We show that this region forms an erythroid-specific, decompacted, self-interacting domain, delimited by frequently apposed CTCF/cohesin binding sites early in terminal erythroid differentiation, and does not require transcriptional elongation for maintenance of the domain structure. Formation of this domain does not rely on interactions between the α-globin genes and their major enhancers, suggesting a transcription-independent mechanism for establishment of the domain. However, absence of the major enhancers does alter internal domain interactions. Formation of a loop domain therefore appears to be a mechanistic process that occurs irrespective of the specific interactions within.
登录
查看更多内容
影响因子:
16.6
作者:
Cattoni DI;Cardozo Gizzi AM;Georgieva M;Di Stefano M;Valeri A;Chamousset D;Houbron C;Déjardin S;Fiche JB;González I;Chang JM;Sexton T;Marti-Renom MA;Bantignies F;Cavalli G;Nollmann M
通讯作者:
Nollmann M
DOI:
10.1007/978-1-4939-2253-6_3
发表时间:
2015-01-01
期刊:
NUCLEAR BODIES AND NONCODING RNAS: METHODS AND PROTOCOLS
影响因子:
--
作者:
Giorgetti, Luca;Piolot, Tristan;Heard, Edith
通讯作者:
Heard, Edith
影响因子:
0.8
作者:
A. M. Oudelaar;D. Downes;J. Davies;J. Hughes
通讯作者:
J. Hughes
影响因子:
8
作者:
M. Lindern;E. Deiner;H. Dolznig;M. P. Amelsvoort;M. Hayman;E. Mullner;H. Beug
通讯作者:
H. Beug
影响因子:
16
作者:
Bartman CR;Hsu SC;Hsiung CC;Raj A;Blobel GA
通讯作者:
Blobel GA