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Updated: May 22, 2026

Systems Biology of Metabolic Regulation by Estrogen Receptor Signaling in Breast Cancer
Published on: March 17, 2016
Estrogen-related receptor alpha: an orphan finds a family
Aleksandra M Ochnik1, Douglas Yee
1Masonic Cancer Center, Departments of Medicine and Pharmacology, University of Minnesota, MMC 806, 420 Delaware Street SE, Minneapolis, MN 55455, USA.
Abstract:
Identification of molecules and their effectors has led to new therapies designed to specifically inhibit pathways in molecularly defined breast cancer subtypes. An orphan nuclear receptor, estrogen-related receptor alpha, has been shown to be a downstream target of two tyrosine kinase growth factor receptors: human epidermal growth factor receptor 2 and the type I insulin-like growth factor receptor. Identifying the mechanistic actions of orphan nuclear receptors could lead to new biomarkers and molecular targets in malignancy.
Insights
New breast cancer therapies target specific molecular pathways. Estrogen-related receptor alpha is a key downstream target, offering potential for novel biomarkers and treatments in malignancy.
Area of Science:
- Oncology
- Molecular Biology
- Endocrinology
Background:
- Targeted therapies are revolutionizing breast cancer treatment by inhibiting specific molecular pathways.
- Estrogen-related receptor alpha (ERRα) is implicated as a downstream effector in cancer signaling.
Purpose of the Study:
- To investigate the mechanistic actions of orphan nuclear receptors, specifically ERRα, in breast cancer.
- To identify ERRα as a potential biomarker and molecular target for novel therapeutic strategies.
Main Methods:
- Analysis of molecular pathways in breast cancer subtypes.
- Investigating the role of orphan nuclear receptors as downstream targets of growth factor receptors.
Main Results:
- Estrogen-related receptor alpha (ERRα) is identified as a downstream target of human epidermal growth factor receptor 2 (HER2) and insulin-like growth factor receptor type I (IGF-1R).
- This establishes a mechanistic link between key growth factor signaling and ERRα activity in breast cancer.
Conclusions:
- Understanding the mechanistic actions of orphan nuclear receptors like ERRα is crucial for developing targeted breast cancer therapies.
- ERRα represents a promising molecular target and potential biomarker for improving treatment strategies in molecularly defined breast cancer subtypes.
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