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2018 ; 9
(1
): 943
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Dissecting super-enhancer hierarchy based on chromatin interactions
#MMPMID29507293
Huang J
; Li K
; Cai W
; Liu X
; Zhang Y
; Orkin SH
; Xu J
; Yuan GC
Nat Commun
2018[Mar]; 9
(1
): 943
PMID29507293
show ga
Recent studies have highlighted super-enhancers (SEs) as important regulatory
elements for gene expression, but their intrinsic properties remain incompletely
characterized. Through an integrative analysis of Hi-C and ChIP-seq data, here we
find that a significant fraction of SEs are hierarchically organized, containing
both hub and non-hub enhancers. Hub enhancers share similar histone marks with
non-hub enhancers, but are distinctly associated with cohesin and CTCF binding
sites and disease-associated genetic variants. Genetic ablation of hub enhancers
results in profound defects in gene activation and local chromatin landscape. As
such, hub enhancers are the major constituents responsible for SE functional and
structural organization.