Abstract:
:The female sex steroid hormone oestrogen stimulates both cell proliferation and cell differentiation in target tissues. These biological actions are mediated primarily through nuclear oestrogen receptors (ERs). The ligand-dependent transactivation of ERs requires several nuclear co-regulator complexes; however, the cell-cycle-dependent associations of these complexes are poorly understood. By using a synchronization system, we found that the transactivation function of ERalpha at G2/M was lowered. Biochemical approaches showed that ERalpha associated with two discrete classes of ATP-dependent chromatin-remodelling complex in a cell-cycle-dependent manner. The components of the NuRD-type complex were identified as G2/M-phase-specific ERalpha co-repressors. Thus, our results indicate that the transactivation function of ERalpha is cell-cycle dependent and is coupled with a cell-cycle-dependent association of chromatin-remodelling complexes.
journal_name
EMBO Repjournal_title
EMBO reportsauthors
Okada M,Takezawa S,Mezaki Y,Yamaoka I,Takada I,Kitagawa H,Kato Sdoi
10.1038/embor.2008.55subject
Has Abstractpub_date
2008-06-01 00:00:00pages
563-8issue
6eissn
1469-221Xissn
1469-3178pii
embor200855journal_volume
9pub_type
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