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Estrogen receptor mutations
J A Taylor1, K J Lewis, D B Lubahn
1Department of Biochemistry, University of Missouri, Columbia 65211, USA.
Abstract:
The purpose of this paper is to review potential novel functional pathways by which estradiol and estrogenic compounds elicit biological responses in mammals. We will limit our approach to those novel functions suggested by phenotypes associated with estrogen receptor-alpha (ER alpha) gene mutations and polymorphisms. The study of these pathways has been greatly aided by the availability of ER alpha-minus mice, which lack classic biological responses to estradiol. In addition, the availability of an ER alpha-minus human family, aromatase-minus human families, and in the near future an aromatase-minus mouse model will allow correlations of novel phenotypes with the lack of active ER alpha protein. The ER alpha-minus mice can potentially be used to characterize in depth novel clinical phenotypes that link the functions of estrogens with sexual maturation, cardiovascular disease, osteoporosis, diabetes, and cancer.
Insights
This review explores novel functions of estradiol and estrogenic compounds, focusing on estrogen receptor-alpha (ER alpha) gene mutations. Understanding these pathways aids research into conditions like cancer and diabetes.
Area of Science:
- Endocrinology
- Genetics
- Molecular Biology
Background:
- Estradiol and estrogenic compounds exert biological effects through various pathways.
- Estrogen receptor-alpha (ER alpha) plays a critical role in mediating these responses.
- Gene mutations and polymorphisms in ER alpha can lead to altered biological functions.
Purpose of the Study:
- To review novel functional pathways of estradiol and estrogenic compounds.
- To investigate functions suggested by phenotypes associated with ER alpha gene mutations and polymorphisms.
- To correlate novel phenotypes with the absence of active ER alpha protein.
Main Methods:
- Utilizing data from ER alpha-minus mice lacking classic estradiol responses.
- Analyzing phenotypes from ER alpha-minus human families and aromatase-minus human families.
- Anticipating insights from future aromatase-minus mouse models.
Main Results:
- ER alpha-minus mice provide a model to study non-classic estrogen functions.
- Human genetic data reveals phenotypes linked to ER alpha deficiency.
- The absence of functional ER alpha protein is associated with specific clinical outcomes.
Conclusions:
- Novel pathways for estradiol action are revealed through genetic studies.
- ER alpha is crucial for functions beyond classic estrogen signaling.
- Further research using genetic models will elucidate estrogen roles in diseases like cancer, diabetes, and osteoporosis.