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Detecting the Ligand-binding Domain Dimerization Activity of Estrogen Receptor Alpha Using the Mammalian Two-Hybrid Assay
Published on: December 19, 2018
An estrogen receptor alpha activity indicator model in mice.
Sang Jun Han1, Bert W O'Malley, Francesco J DeMayo
1Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA.
Genesis (New York, N.Y. : 2000)
|November 3, 2009
Summary
Researchers created a novel mouse model to track estrogen receptor alpha (ERalpha) activity in living organisms. This ER Alpha Activity Indicator (ERAAI) mouse allows for dynamic in vivo studies of ERalpha function.
Area of Science:
- Reproductive Biology
- Molecular Endocrinology
- Genetics
Background:
- Estrogen receptor alpha (ERalpha) is crucial for female reproductive functions.
- Understanding dynamic ERalpha activity in vivo is essential for reproductive health research.
Purpose of the Study:
- To develop a novel mouse model for visualizing and studying dynamic in vivo ERalpha activity.
- To create a tool for investigating ERalpha's role in estrogen target tissues.
Main Methods:
- Development of an ER Alpha Activity Indicator (ERAAI) mouse.
- Modification of ERalpha by replacing its DNA binding domain with yeast Gal4's DBD (Gal4-ERalpha).
- Insertion of a reporter transgene (hrGFP) regulated by Gal4 upstream activating sequences (UAS(G)) into a modified ERalpha BAC clone.
Main Results:
- The ERAAI mouse successfully recapitulates endogenous ERalpha expression patterns.
- Reporter gene (hrGFP) expression accurately reflects ERalpha activity in estrogen target tissues.
- The model demonstrates dynamic ERalpha activity in response to estrogen stimulation.
Conclusions:
- The ERAAI mouse serves as a valuable new animal model for in vivo research on ERalpha.
- This model facilitates the study of dynamic ERalpha activity and its physiological roles.
- Enables deeper insights into estrogen-mediated processes in reproductive biology.
