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Perturbations in the model of estrogen receptor regulation of gene expression
J Gorski1, J D Furlow, F E Murdoch
1Department of Biochemistry, University of Wisconsin, Madison 53706.
Abstract:
Estrogen receptors are key elements in the mechanisms of action of estrogenic hormones. Models of how estrogens and their receptors interact and subsequently modify gene expression should be reevaluated to explain new data currently available. The following review discusses nuclear localization, DNA binding, and protein structural changes of the estrogen receptor induced by estrogen binding. We also discuss how these phenomena relate to the induction of changes in gene expression.
Insights
Estrogen receptors are crucial for estrogenic hormone action. This review reevaluates estrogen receptor models, focusing on how estrogen binding affects nuclear localization, DNA binding, and structural changes to alter gene expression.
Area of Science:
- Endocrinology
- Molecular Biology
- Genetics
Background:
- Estrogen receptors (ERs) mediate the effects of estrogenic hormones.
- Current models require reevaluation due to emerging data on ER-ligand interactions.
- Understanding these interactions is vital for comprehending gene regulation.
Purpose of the Study:
- To review and update models of estrogen receptor (ER) function.
- To discuss the impact of estrogen binding on ER's nuclear localization, DNA binding, and structure.
- To correlate these molecular events with changes in gene expression.
Main Methods:
- Literature review of recent studies on estrogen receptors.
- Analysis of data on ER nuclear translocation.
- Examination of ER-DNA binding dynamics and structural alterations.
Main Results:
- Estrogen binding induces significant changes in ER nuclear localization.
- ER undergoes conformational changes upon ligand binding, affecting DNA interaction.
- These molecular events are directly linked to the modulation of target gene expression.
Conclusions:
- Updated models of estrogen receptor action are necessary.
- Estrogen-induced changes in ER nuclear localization, DNA binding, and structure are key regulatory mechanisms.
- These mechanisms provide a framework for understanding how estrogens control gene expression.