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Related Experiment Videos

How do retinoids work?

F Chytil1, D R Sherman

  • 1Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tenn.

Dermatologica
|January 1, 1987
PubMed
Summary
This summary is machine-generated.

Natural retinoids, like retinol and retinoic acid, are vital for epithelial cell differentiation and maintenance. These compounds also influence non-epithelial cell metabolism by altering gene expression, affecting over 40 proteins.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Background:

  • Natural retinoids, including retinol and retinoic acid, are essential dietary micronutrients.
  • Retinoids play a crucial role in the differentiation and maintenance of various epithelial tissues.
  • Emerging evidence suggests retinoids also impact the metabolism of nonepithelial cells.

Purpose of the Study:

  • To investigate the molecular mechanisms by which natural retinoids affect cellular metabolism.
  • To elucidate the role of retinol and retinoic acid in regulating genomic expression.
  • To understand the time-dependent nature of retinoid effects on gene expression and protein synthesis.

Main Methods:

  • Analysis of gene expression changes induced by retinol and retinoic acid.

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  • Identification of specific proteins affected by retinoid treatment.
  • Time-course studies to assess the kinetics of retinoid-mediated genomic alterations.

    • Main Results:

    • Retinol and retinoic acid modulate genomic expression by activating and repressing specific genes.
    • These actions lead to the synthesis or degradation of over 40 distinct proteins.
    • The effects on gene expression are time-dependent, with some changes occurring within hours and others requiring longer periods.

    Conclusions:

    • Natural retinoids significantly impact cellular function beyond their established roles in epithelia.
    • Retinoids exert their effects through the modulation of gene expression, influencing a wide array of proteins.
    • Further research is needed to fully understand the direct interactions between retinoids and the genome.