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Mechanisms of transcriptional activation by steroid hormone receptors

A Baniahmad1, M J Tsai

  • 1Department of Cell Biology, Baylor College of Medicine, Houston, Texas 77030.

Journal of Cellular Biochemistry
|February 1, 1993
PubMed

Insights

Steroid hormones regulate cell growth via nuclear receptors. This review explores how these receptors become transcriptional activators, focusing on heat shock proteins and agonist/antagonist differences.

Area of Science:

  • Molecular Biology
  • Endocrinology
  • Genetics

Background:

  • Steroid hormones are crucial for cellular processes like growth and differentiation.
  • Hormonal signals are transmitted by nuclear receptors, a type of transcription factor.
  • Recent cloning of major steroid hormone receptors has advanced understanding of their function.

Purpose of the Study:

  • To review the mechanism of steroid hormone action.
  • To discuss the role of heat shock proteins in transcriptional activation.
  • To differentiate between hormone agonists and antihormone antagonists.

Main Methods:

  • Literature review of recent findings on steroid hormone receptors.
  • Analysis of the role of heat shock proteins in receptor function.
  • Comparison of agonist and antagonist mechanisms.

Main Results:

  • Nuclear receptors are key mediators of steroid hormone signaling.
  • Heat shock proteins play a significant role in transcriptional activation.
  • Agonists and antagonists exhibit distinct mechanistic differences.

Conclusions:

  • Understanding steroid hormone action involves dissecting receptor activation pathways.
  • Heat shock proteins and the nature of the ligand (agonist/antagonist) are critical factors.
  • Further research can elucidate the precise modes of transcriptional activation.

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