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Updated: Sep 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 receptor coactivator function in reproductive physiology and behavior
Heather A Molenda1, Caitlin P Kilts, Rachel L Allen
1Center for Neuroendocrine Studies, Neuroscience and Behavior Program, University of Massachusetts, Amherst, Massachusetts 01003, USA.
Abstract:
Gonadal steroid hormones act throughout the body to elicit changes in gene expression that result in profound effects on reproductive physiology and behavior. Steroid hormones exert many of these effects by binding to their respective intracellular receptors, which are members of a nuclear receptor superfamily of transcriptional activators. A variety of in vitro studies indicate that nuclear receptor coactivators are required for efficient transcriptional activity of steroid receptors. Many of these coactivators are found in a variety of steroid hormone-responsive reproductive tissues, including the reproductive tract, mammary gland, and brain. While many nuclear receptor coactivators have been investigated in vitro, we are only now beginning to understand their function in reproductive physiology and behavior. In this review, we discuss the general mechanisms of action of nuclear receptor coactivators in steroid-dependent gene transcription. We then review some recent and exciting findings on the function of nuclear receptor coactivators in steroid-dependent brain development and reproductive physiology and behavior.
Insights
Nuclear receptor coactivators are essential for steroid hormone action. This review explores their mechanisms and crucial roles in reproductive physiology and brain development.
Area of Science:
- Molecular Endocrinology
- Neuroendocrinology
- Reproductive Biology
Background:
- Gonadal steroid hormones regulate gene expression impacting reproductive physiology and behavior.
- Steroid hormone effects are mediated by intracellular receptors, part of the nuclear receptor superfamily.
- Nuclear receptor coactivators are known to be crucial for efficient steroid receptor transcriptional activity in vitro.
Purpose of the Study:
- To review the general mechanisms of nuclear receptor coactivators in steroid-dependent gene transcription.
- To discuss recent findings on the function of these coactivators in reproductive physiology and behavior.
- To highlight their roles in steroid-dependent brain development.
Main Methods:
- Literature review of in vitro and in vivo studies.
- Analysis of coactivator involvement in gene transcription.
- Synthesis of current research on coactivator functions in reproductive tissues and the brain.
Main Results:
- Nuclear receptor coactivators are widely distributed in steroid hormone-responsive tissues.
- Emerging evidence demonstrates their critical roles in vivo, beyond in vitro observations.
- Coactivators are integral to steroid-dependent processes in the brain, reproductive tract, and mammary gland.
Conclusions:
- Nuclear receptor coactivators are vital for mediating steroid hormone actions.
- Understanding coactivator function is key to comprehending reproductive physiology, behavior, and brain development.
- Further research is needed to fully elucidate their in vivo roles and therapeutic potential.
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