Abstract:
:Estrogen receptor alpha (ERalpha) mediates estrogen (E2) actions in the brain and is critical for normal reproductive function and behavior. In the classical pathway, ERalpha binds to estrogen response elements (EREs) to regulate gene transcription. ERalpha can also participate in several non-classical pathways, including ERE-independent gene transcription via protein-protein interactions with transcription factors and rapid, non-genotropic pathways. To distinguish between ERE-dependent and ERE-independent mechanisms of E2 action in vivo, we have created ERalpha null mice that possess an ER knock-in mutation (E207A/G208A; "AA"), in which the mutant ERalpha cannot bind to DNA but retains activity in ERE-independent pathways (ERalpha(-/AA) mice). Understanding the molecular mechanisms of ERalpha action will be helpful in developing pharmacological therapies that differentiate between ERE-dependent and ERE-independent processes. This review focuses on how the ERalpha(-/AA) model has contributed to our knowledge of ERalpha signaling mechanisms in estrogen regulation of the reproductive axis and sexual behavior.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
McDevitt MA,Glidewell-Kenney C,Jimenez MA,Ahearn PC,Weiss J,Jameson JL,Levine JEdoi
10.1016/j.mce.2008.04.003subject
Has Abstractpub_date
2008-08-13 00:00:00pages
24-30issue
1-2eissn
0303-7207issn
1872-8057pii
S0303-7207(08)00130-5journal_volume
290pub_type
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