Related Experiment Video
Updated: Aug 16, 2026

An Ex vivo Model to Study Hormone Action in the Human Breast
Published on: January 8, 2015
Current status of hormone receptors in human breast cancer
Abstract:
In an effort to improve the response rate to endocrine manipulation in patients with metastatic breast cancer, there has been vigorous inquiry into the mechanism of action of steroid hormones. The author discusses the value of receptor assays, specifically recommending the measurement of the estrogen receptor status of every breast cancer.
Insights
Measuring estrogen receptor status in breast cancer patients is crucial for improving endocrine therapy response rates. This approach helps tailor treatments for metastatic breast cancer, enhancing patient outcomes.
Area of Science:
- Endocrinology
- Oncology
- Molecular Biology
Background:
- Metastatic breast cancer (MBC) treatment often involves endocrine manipulation.
- Improving patient response rates to endocrine therapy remains a significant clinical challenge.
- Understanding steroid hormone mechanisms is key to optimizing MBC treatment.
Purpose of the Study:
- To explore the mechanisms of steroid hormone action in MBC.
- To evaluate the utility of receptor assays in predicting endocrine therapy response.
- To advocate for routine estrogen receptor (ER) status measurement in all breast cancers.
Main Methods:
- Review of current research on steroid hormone action.
- Discussion of the clinical value of receptor assays.
- Recommendation for specific biomarker testing.
Main Results:
- Estrogen receptor (ER) status is a critical determinant of endocrine therapy efficacy.
- Receptor assays provide valuable prognostic and predictive information.
- Measurement of ER status can guide treatment decisions for MBC.
Conclusions:
- Routine measurement of estrogen receptor status is recommended for all breast cancer patients.
- ER status assessment is vital for selecting appropriate endocrine-based treatments.
- This practice can enhance treatment response and outcomes in metastatic breast cancer.
Related Concept Videos
Intracellular Hormone Receptors
Mitogens and the Cell Cycle
Receptor Downregulation in MVBs
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
Transducer Mechanism: Nuclear Receptors
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:

