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Updated: Aug 23, 2026

Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
Published on: November 15, 2013
Nuclear receptors in disease: the oestrogen receptors
Maria Nilsson1, Karin Dahlman-Wright, Jan-Ake Gustafsson
1Departments of Biosciences and Medical Nutrition, Karolinska Institutet, Novum, SE-141 57 Huddinge, Sweden.
Abstract:
For several decades, it has been known that oestrogens are essential for human health. The discovery that there are two oestrogen receptors (ERs), ERalpha and ERbeta, has facilitated our understanding of how the hormone exerts its physiological effects. The ERs belong to the family of ligand-activated nuclear receptors, which act by modulating the expression of target genes. Studies of ER-knockout (ERKO) mice have been instrumental in defining the relevance of a given receptor subtype in a certain tissue. Phenotypes displayed by ERKO mice suggest diseases in which dysfunctional ERs might be involved in aetiology and pathology. Association between single-nucleotide polymorphisms (SNPs) in ER genes and disease have been demonstrated in several cases. Selective ER modulators (SERMs), which are selective with regard to their effects in a certain cell type, already exist. Since oestrogen has effects in many tissues, the goal with a SERM is to provide beneficial effects in one target tissue while avoiding side effects in others. Refined SERMs will, in the future, provide improved therapeutic strategies for existing and novel indications.
Insights
Oestrogens are vital for health, with two receptors (ERalpha and ERbeta) mediating effects. Understanding these estrogen receptors (ERs) and developing selective modulators (SERMs) offers new therapeutic strategies.
Area of Science:
- Endocrinology
- Molecular Biology
- Genetics
Background:
- Oestrogens are crucial for human health.
- Two main oestrogen receptors (ERs), ERalpha and ERbeta, mediate oestrogen's physiological effects.
- ERs are ligand-activated nuclear receptors that regulate gene expression.
Purpose of the Study:
- To explore the role of oestrogen receptors (ERs) in human health and disease.
- To highlight the utility of ER-knockout (ERKO) mouse models in understanding receptor function.
- To discuss the development and therapeutic potential of selective oestrogen receptor modulators (SERMs).
Main Methods:
- Utilizing ER-knockout (ERKO) mouse models to ascertain the physiological relevance of ER subtypes.
- Analyzing associations between single-nucleotide polymorphisms (SNPs) in ER genes and disease phenotypes.
- Investigating the mechanism of action of selective oestrogen receptor modulators (SERMs).
Main Results:
- ERKO mouse phenotypes provide insights into diseases linked to ER dysfunction.
- Genetic variations (SNPs) in ER genes are associated with certain diseases.
- Selective oestrogen receptor modulators (SERMs) demonstrate tissue-specific effects.
Conclusions:
- Oestrogen receptors (ERs) play a fundamental role in human physiology.
- ERKO mice are valuable tools for studying ER function and related diseases.
- Selective oestrogen receptor modulators (SERMs) represent a promising therapeutic avenue for targeted oestrogen-related treatments.
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