How Connective Tissue Growth Factor Affects Estrogen Receptor Activity
Author Information
Author(s): Cheng Long, Yang Zhihong, Wang Xiaohui, Jiao Yuanyuan, Xie Xiangyang, Lin Jing, Zhang Hao, Han Juqiang, Jiang Kai, Ye Qinong
Primary Institution: Beijing Institute of Biotechnology
Hypothesis
Does connective tissue growth factor (CTGF) interact with estrogen receptors (ER) and affect their transcriptional activity?
Conclusion
CTGF physically interacts with estrogen receptors and inhibits their transcriptional activity.
Supporting Evidence
- CTGF was identified as an ERĪ²-interacting protein through yeast two-hybrid screening.
- Overexpression of CTGF inhibited ER transcriptional activity in breast cancer cell lines.
- CTGF reduced the expression of estrogen-responsive genes like pS2 and cathepsin D.
- Knockdown of CTGF increased ER transcriptional activity, confirming its repressive role.
Takeaway
CTGF is a protein that can stop estrogen from doing its job in the body, which might be important for understanding certain cancers.
Methodology
The study used yeast two-hybrid assays, coimmunoprecipitation, and luciferase reporter assays to investigate the interaction between CTGF and estrogen receptors.
Limitations
The study primarily focused on in vitro experiments, which may not fully represent in vivo conditions.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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