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National Institute of Environmental Health Sciences

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Publication Detail

Title: Integrative genomics of gene and metabolic regulation by estrogen receptors α and β, and their coregulators.

Authors: Madak-Erdogan, Zeynep; Charn, Tze-Howe; Jiang, Yan; Liu, Edison T; Katzenellenbogen, John A; Katzenellenbogen, Benita S

Published In Mol Syst Biol, (2013 Jun 18)

Abstract: The closely related transcription factors (TFs), estrogen receptors ERα and ERβ, regulate divergent gene expression programs and proliferative outcomes in breast cancer. Utilizing breast cancer cells with ERα, ERβ, or both receptors as a model system to define the basis for differing response specification by related TFs, we show that these TFs and their key coregulators, SRC3 and RIP140, generate overlapping as well as unique chromatin-binding and transcription-regulating modules. Cistrome and transcriptome analyses and the use of clustering algorithms delineated 11 clusters representing different chromatin-bound receptor and coregulator assemblies that could be functionally associated through enrichment analysis with distinct patterns of gene regulation and preferential coregulator usage, RIP140 with ERβ and SRC3 with ERα. The receptors modified each other's transcriptional effect, and ERβ countered the proliferative drive of ERα through several novel mechanisms associated with specific binding-site clusters. Our findings delineate distinct TF-coregulator assemblies that function as control nodes, specifying precise patterns of gene regulation, proliferation, and metabolism, as exemplified by two of the most important nuclear hormone receptors in human breast cancer.

PubMed ID: 23774759 Exiting the NIEHS site

MeSH Terms: Adaptor Proteins, Signal Transducing/genetics*; Adaptor Proteins, Signal Transducing/metabolism; Breast Neoplasms/genetics*; Breast Neoplasms/metabolism; Cell Line, Tumor; Cell Proliferation; Chromatin/genetics; Chromatin/metabolism; Estrogen Receptor alpha/genetics*; Estrogen Receptor alpha/metabolism; Estrogen Receptor beta/genetics*; Estrogen Receptor beta/metabolism; Female; Gene Expression Regulation, Neoplastic*; Genomics*; Humans; Multigene Family; Nuclear Proteins/genetics*; Nuclear Proteins/metabolism; Nuclear Receptor Coactivator 3/genetics*; Nuclear Receptor Coactivator 3/metabolism; Nuclear Receptor Interacting Protein 1; Protein Interaction Maps; Signal Transduction; Transcriptome

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