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Related Experiment Videos

Gene regulation by melatonin.

C Carlberg1

  • 1Institut für Physiologische Chemie I, Heinrich-Heine-Universität Düsseldorf, Postfach 10 10 07, D-40001 Düsseldorf, Germany. carlberg@uni-duesseldorf.de

Annals of the New York Academy of Sciences
|March 28, 2001
PubMed
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Melatonin

Area of Science:

  • Neuroendocrinology
  • Molecular Biology
  • Pharmacology

Background:

  • Melatonin's functions and therapeutic uses depend on understanding its targets and actions.
  • Recent advances include cloning of melatonin receptors (Mel1a, Mel1b) and nuclear receptors (RZR/ROR alpha, RZR beta).

Purpose of the Study:

  • To review the current understanding of melatonin's physiological functions and therapeutic potential.
  • To elucidate the roles of membrane and nuclear melatonin receptors in mediating melatonin's actions.
  • To explore the relationship between membrane receptors and the RZR/ROR alpha nuclear receptor.

Main Methods:

  • Literature review of recent studies on melatonin receptors and signaling pathways.
  • Analysis of gene regulatory actions mediated by RZR/ROR alpha.

Related Experiment Videos

  • Comparison of ligand sensitivity and expression patterns of membrane and nuclear receptors.

    • Main Results:

    • Melatonin receptors (Mel1a, Mel1b) and nuclear receptors (RZR/ROR alpha, RZR beta) have been identified.
    • RZR/ROR alpha acts as a transcription factor, binding to gene promoters (e.g., 5-LO, p21WAF1/CIP1, BSP).
    • Membrane receptors are primarily in the CNS, linked to circadian rhythms; RZR/ROR alpha is widespread and mediates peripheral effects like immunomodulation and bone differentiation.

    Conclusions:

    • Melatonin signaling involves both membrane and nuclear pathways with distinct sensitivities and target genes.
    • RZR/ROR alpha plays a significant role in mediating melatonin's peripheral effects.
    • It is hypothesized that RZR/ROR alpha may be a primary target for membrane melatonin receptors in certain contexts.