Open AccessThe genome landscape of ERα- and ERβ-binding DNA regions
Author(s) -
Yawen Liu,
Hui Gao,
Troels Marstrand,
Anders Ström,
Eivind Valen,
Albin Sandelin,
JanÅke Gustafsson,
Karin Dahlman-Wright
Publication year - 2008
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.0712085105
Subject(s) - chromatin , estrogen receptor , biology , transcription factor , binding site , estrogen receptor alpha , dna binding site , genetics , dna , gene , computational biology , gene expression , promoter , cancer , breast cancer
In this article, we have applied the ChIP-on-chip approach to pursue a large scale identification of ERα- and ERβ-binding DNA regions in intact chromatin. We show that there is a high degree of overlap between the regions identified as bound by ERα and ERβ, respectively, but there are also regions that are bound by ERα only in the presence of ERβ, as well as regions that are selectively bound by either receptor. Analysis of bound regions shows that regions bound by ERα have distinct properties in terms of genome landscape, sequence features, and conservation compared with regions that are bound by ERβ. ERβ-bound regions are, as a group, located more closely to transcription start sites. ERα- and ERβ-bound regions differ in sequence properties, with ERα-bound regions having an overrepresentation of TA-rich motifs including forkhead binding sites and ERβ-bound regions having a predominance of classical estrogen response elements (EREs) and GC-rich motifs. Differences in the properties of ER bound regions might explain some of the differences in gene expression programs and physiological effects shown by the respective estrogen receptors.