Abstract
Ever since the discovery of estradiol and the elucidation of its chemical structure, there has been a great deal of interest in its mechanism of action and its potential therapeutic value. It is now well established that estrogens have many different functions in many different cell-types. With respect to the potential use of estrogens as therapeutics, there is an interest in controlling reproductive function, bone metabolism, cardiovascular disease, as well as in the prevention of hot flushes, mood changes and Alzheimers disease. For over a decade, it was believed that estrogens signal through a a single estrogen receptor, now referred to as ER alpha, which belongs to a family of ligand-activated transcription factors. More recently, however, a second estrogen receptor ERb was identified. The current review describes similarities as well as differences between these two distinct estrogen receptors. Both ER alpha and ER beeta bind 17beeta-estradiol with high affinity and they bind to classical estrogen response elements in a similar if not identical fashion. However, there are also major differences between ER alpha and ERbeeta for instance with respect to their tissue distribution, the phenotype of the corresponding knock-out mice and their transcriptional activities. It is anticipated that a better understanding of these two receptors will eventually lead to more selective ways of modulating physiological processes which are influenced by estrogens. For this purpose, the development of ERa and ERb specific ligands, both agonists as well as antagonists, will be of great importance.
Keywords: estrogen receptor, nuclear receptor gene, glucocorticoid GR, DNA binding domain DBD, MAPK mediated serine phosphorylation, agonists antagonsits, anti estrogen 4 hydroxytamoxifen OHT, Splice variants, transcriptional co regualtors, ligand independent activation, hormone replacement therapy, ligand binding specificity, high throughput screening assays
Current Medicinal Chemistry
Title: Estrogen Receptors alpha and beeta Two Receptors of a Kind
Volume: 7 Issue: 5
Author(s): Koen Dechering, Christine Boersma and Sietse Mosselman
Affiliation:
Keywords: estrogen receptor, nuclear receptor gene, glucocorticoid GR, DNA binding domain DBD, MAPK mediated serine phosphorylation, agonists antagonsits, anti estrogen 4 hydroxytamoxifen OHT, Splice variants, transcriptional co regualtors, ligand independent activation, hormone replacement therapy, ligand binding specificity, high throughput screening assays
Abstract: Ever since the discovery of estradiol and the elucidation of its chemical structure, there has been a great deal of interest in its mechanism of action and its potential therapeutic value. It is now well established that estrogens have many different functions in many different cell-types. With respect to the potential use of estrogens as therapeutics, there is an interest in controlling reproductive function, bone metabolism, cardiovascular disease, as well as in the prevention of hot flushes, mood changes and Alzheimers disease. For over a decade, it was believed that estrogens signal through a a single estrogen receptor, now referred to as ER alpha, which belongs to a family of ligand-activated transcription factors. More recently, however, a second estrogen receptor ERb was identified. The current review describes similarities as well as differences between these two distinct estrogen receptors. Both ER alpha and ER beeta bind 17beeta-estradiol with high affinity and they bind to classical estrogen response elements in a similar if not identical fashion. However, there are also major differences between ER alpha and ERbeeta for instance with respect to their tissue distribution, the phenotype of the corresponding knock-out mice and their transcriptional activities. It is anticipated that a better understanding of these two receptors will eventually lead to more selective ways of modulating physiological processes which are influenced by estrogens. For this purpose, the development of ERa and ERb specific ligands, both agonists as well as antagonists, will be of great importance.
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Cite this article as:
Dechering Koen, Boersma Christine and Mosselman Sietse, Estrogen Receptors alpha and beeta Two Receptors of a Kind, Current Medicinal Chemistry 2000; 7 (5) . https://dx.doi.org/10.2174/0929867003375010
DOI https://dx.doi.org/10.2174/0929867003375010 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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