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Updated: Jun 27, 2026
09:07
Detecting the Ligand-binding Domain Dimerization Activity of Estrogen Receptor Alpha Using the Mammalian Two-Hybrid Assay
Published on: December 19, 2018
[Establishment of estrogen receptor alpha trans-activation system]
Jie-Ping Li1, Zhi-Hong Xiong, Zhi-Hong Yang
1Beijing Institue of Biotechnology, Beijing 100850, China.
Zhonghua Fu Chan Ke Za Zhi
|December 18, 2008
Summary
A novel estrogen receptor alpha (ERalpha) trans-activation system was successfully constructed. This system enables the study of ERalpha
Area of Science:
- Molecular Biology
- Endocrinology
- Cell Biology
Context:
- Estrogen receptor alpha (ERalpha) plays a crucial role in various physiological processes.
- Understanding ERalpha's transcriptional activity is vital for studying its function and developing targeted therapies.
- Existing methods for studying ERalpha trans-activation may have limitations in efficiency or scope.
Purpose:
- To construct a functional trans-activation system for estrogen receptor alpha (ERalpha).
- To validate the functionality of ERalpha and its key domains (AF1, DBD, AF2) within the constructed system.
- To provide a tool for investigating ERalpha-mediated gene expression.
Summary:
- The study successfully engineered a trans-activation system by cloning ERalpha and its functional domains into a pGAL vector.
- Expression of full-length ERalpha and its domains was confirmed in 293T cells.
- Estrogen (E2) induction significantly enhanced the transcriptional activity of ERalpha, AF1, and AF2 domains, with varying degrees of fold-increase, validating the system's efficacy.
Impact:
- Establishes a robust system for studying ERalpha-mediated transcription.
- Facilitates research into estrogen signaling pathways and their role in health and disease.
- Provides a foundation for drug discovery targeting the estrogen receptor pathway.
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