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Human estrogen receptor beta-gene structure, chromosomal localization, and expression pattern

E Enmark1, M Pelto-Huikko, K Grandien

  • 1Center for Biotechnology, Novum, Huddinge, Sweden.

The Journal of Clinical Endocrinology and Metabolism
|December 17, 1997
PubMed
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Scientists discovered a second estrogen receptor (ER beta), distinct from the original ER. This new receptor is found in human testes and ovaries, impacting our understanding of hormone effects and environmental estrogens.

Area of Science:

  • Endocrinology
  • Molecular Biology
  • Genetics

Background:

  • The estrogen receptor (ER) is a key transcription factor mediating 17 beta-estradiol effects.
  • Previously, only one type of ER was known, but a second subtype, ER beta, has been identified.

Purpose of the Study:

  • To investigate the genomic structure and chromosomal localization of the human ER beta gene.
  • To determine the tissue distribution of human ER beta.

Main Methods:

  • Genomic analysis to understand the structure of the ER beta gene.
  • Chromosomal localization studies.
  • Tissue expression analysis to identify where ER beta is found.

Main Results:

  • Confirmed the existence of two independent estrogen receptor genes in humans.

Related Experiment Videos

  • Demonstrated that ER beta is expressed in multiple human tissues.
  • Identified ER beta in developing testis spermatids and ovarian granulosa cells.

    • Conclusions:

    • Estrogen receptors (ER and ER beta) are distinct genes in the human genome.
    • ER beta expression in the testis suggests a role in male reproductive health and environmental estrogen effects.
    • ER beta in ovarian granulosa cells indicates its involvement in regulating human follicular growth.