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Related Experiment Video

Updated: Apr 20, 2026

Screening for Phytoestrogens using a Cell-based Estrogen Receptor β Reporter Assay
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A screening cascade to identify ERβ ligands.

Carly S Filgueira1, Cindy Benod1, Xiaohua Lou1

  • 1Genomic Medicine, Houston Methodist Research Institute (CSF, CB, XL, PSG, RAV, ALB, PW) and Center for Nuclear Receptors and Cell Signaling, University of Houston (AS, JAG, ALB, PW), Houston, Texas, USA .

Nuclear Receptor Signaling
|November 26, 2014
PubMed
Summary

This study presents a new screening method to find selective estrogen receptor beta (ERβ) ligands. This approach aids in repurposing drugs for various diseases while minimizing risks associated with ERα.

Keywords:
Screeningchemical librariesdrugsgene expressiongene regulationnuclear receptors

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Area of Science:

  • Endocrinology
  • Pharmacology
  • Drug Discovery

Background:

  • Nuclear receptor (NR) ligands are crucial for targeted therapies.
  • Drug repositioning offers advantages over de novo design due to reduced failure rates and costs.
  • Estrogen receptor beta (ERβ) ligands show therapeutic potential across diverse diseases, but selectivity over ERα is challenging.

Purpose of the Study:

  • To develop and validate a sequential screening approach for identifying selective ERβ ligands.
  • To minimize cross-reactivity with the highly similar ERα subtype.
  • To facilitate the identification of drug candidates for repositioning.

Main Methods:

  • Utilized a sequential screening strategy with complementary in-house assays.
  • Employed differential scanning fluorimetry, fluorescence polarization, and GAL4 transactivation assays.
  • Screened commercial chemical libraries to identify ERβ binders.

Main Results:

  • Identified thirty ERβ binders from screened chemical libraries.
  • Evaluated the selectivity of identified binders for ERβ over ERα.
  • Tested selected ligands in a prostate cancer cell proliferation assay, demonstrating potential therapeutic effects.

Conclusions:

  • The developed sequential screening approach effectively identifies selective ERβ ligands.
  • This method can accelerate the discovery of drug candidates for repositioning.
  • Selective ERβ modulation offers a promising therapeutic strategy for various conditions.