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Systems Biology of Metabolic Regulation by Estrogen Receptor Signaling in Breast Cancer
10:36

Systems Biology of Metabolic Regulation by Estrogen Receptor Signaling in Breast Cancer

Published on: March 17, 2016

Functional genomic methods to study estrogen receptor activity

Siv Gilfillan1, Elisa Fiorito, Antoni Hurtado

  • 1Breast Cancer Research group, Nordic EMBL Partnership, Centre for Molecular Medicine Norway, University of Oslo, Blindern, Oslo, Norway.

Journal of Mammary Gland Biology and Neoplasia
|May 17, 2012
PubMed

Insights

Estrogen Receptor (ER) research reveals how estrogen and tamoxifen impact breast cancer genomics. Functional genomic methods like ChIP and FAIRE help analyze these ER-ligand interactions and chromatin changes.

Area of Science:

  • Molecular Biology
  • Genomics
  • Cancer Research

Background:

  • Estrogen Receptor (ER) is crucial in mediating estrogen and tamoxifen actions.
  • ER is frequently expressed in human breast cancers.
  • Genomic mapping of ER interactions with estrogen and tamoxifen has recently been established.

Purpose of the Study:

  • To review functional genomic methods for studying ER ligand and co-operating factor influences.
  • To explore methods analyzing protein-DNA interactions and chromatin modifications.
  • To understand ER transcriptional regulation in breast cancer.

Main Methods:

  • Chromatin Immunoprecipitation (ChIP) for protein-DNA interactions.
  • Formaldehyde-Assisted Isolation of Regulatory Elements (FAIRE) for chromatin accessibility.
  • Integration of these methods with high-throughput sequencing.

Main Results:

  • Estrogen and tamoxifen induce similar genomic interactions via co-operating factors.
  • These interactions affect ER-DNA binding and gene expression.
  • Chromatin changes provide insights into ER transcriptional regulation.

Conclusions:

  • Functional genomic methods are essential for dissecting ER-ligand and co-factor roles.
  • Combining ChIP and FAIRE offers a comprehensive approach.
  • Understanding these mechanisms advances breast cancer therapy insights.

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