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Pristane induced gene activation.

L R Garrett1, C J Jones, M A Cuchens

  • 1Department of Microbiology University of Mississippi Medical Center, Jackson 39216-4505.

Chemico-Biological Interactions
|January 1, 1992
PubMed
Summary
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Pristane, a chemical compound, effectively induces gene expression similarly to the tumor promoter TPA. Both substances altered cell morphology in NIH-3T3, CV-1, and COS-7 cells during gene activation studies.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Gene expression regulation is crucial for cellular function.
  • Viral promoter/enhancer elements are key tools for studying gene regulation.
  • Tumor promoters like TPA are known to influence cellular processes.

Purpose of the Study:

  • To compare the effects of 2,6,10,14-tetramethyl pentadecane (pristane) and 12-O-tetradecanoylphorbol 13-acetate (TPA) on CAT gene activation.
  • To investigate the influence of these compounds on viral promoter/enhancer elements.
  • To assess changes in cell morphology induced by pristane and TPA.

Main Methods:

  • Transfection of NIH-3T3, CV-1, and COS-7 cells with various CAT gene constructs (SV2cat, HIVcat, RSVcat, MMTVcat, pA10cat, pOSP/11, pSV0cat).

Related Experiment Videos

  • Treatment of transfected cells with pristane or TPA.
  • Measurement of CAT gene activity to assess trans-activation.
  • Microscopic observation of cell morphology changes.

    • Main Results:

    • Both pristane and TPA induced trans-activation of SV2cat, HIVcat, RSVcat, and MMTVcat.
    • Pristane uniquely activated pA10cat and pOSP/11, while TPA did not.
    • Neither compound trans-activated pSV0cat.
    • Pristane and TPA caused observable changes in the morphology of all tested cell lines.

    Conclusions:

    • Pristane is identified as a potent inducer of gene expression.
    • Pristane exhibits similar gene-regulatory characteristics to the known tumor promoter, TPA.
    • Both compounds can alter cellular morphology, suggesting broader biological effects beyond gene activation.