Abstract
Gonadal steroid hormones act in the brain to elicit changes in gene expression that result in profound effects on behavior and physiology. A variety of in vitro studies indicate that nuclear receptor coactivators are required for efficient transcriptional activity of steroid receptors. Two nuclear receptor coactivators, steroid receptor coactivator-1 (SRC-1) and cAMP response element binding protein-binding protein (CBP), have been shown to act in concert to enhance ER activity in vitro. In the present study, we investigated the function of these important nuclear receptor coactivators in estrogen action in rodent brain. Reduction of SRC-1 and CBP protein in brain disrupted ER-mediated activation of the behaviorally relevant progestin receptor gene. Furthermore, we found that SRC-1 and CBP function in brain to modulate the expression of hormone-dependent female sexual behavior. These findings indicate that these nuclear receptor coactivators function in brain to modulate ER transcriptional activity and the expression of hormone-dependent behavior.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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Brain / cytology
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Brain Chemistry / genetics*
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CREB-Binding Protein
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Cell Count
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Cell Death / genetics
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Female
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Gene Expression Regulation / drug effects
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Gene Expression Regulation / physiology*
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Histone Acetyltransferases
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Hormones / physiology*
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Immunohistochemistry
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Male
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Nuclear Proteins / biosynthesis
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Nuclear Proteins / genetics
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Nuclear Receptor Coactivator 1
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Oligonucleotides, Antisense / pharmacology
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Ovariectomy
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Rats
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Rats, Sprague-Dawley
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Receptors, Cytoplasmic and Nuclear / metabolism*
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Receptors, Estrogen / biosynthesis
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Receptors, Estrogen / genetics
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Receptors, Progesterone / biosynthesis
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Receptors, Progesterone / genetics
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Sexual Behavior, Animal / physiology*
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Trans-Activators / biosynthesis
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Trans-Activators / genetics
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Transcription Factors / biosynthesis
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Transcription Factors / genetics
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Transcriptional Activation / genetics
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Ventromedial Hypothalamic Nucleus / metabolism
Substances
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Hormones
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Nuclear Proteins
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Oligonucleotides, Antisense
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Receptors, Cytoplasmic and Nuclear
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Receptors, Estrogen
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Receptors, Progesterone
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Trans-Activators
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Transcription Factors
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CREB-Binding Protein
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Crebbp protein, rat
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Histone Acetyltransferases
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Nuclear Receptor Coactivator 1