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Resveratrol Represses Pokemon Expression in Human Glioma Cells

Yutao Yang1, Jiajun Cui2, Feng Xue3

  • 1Department of Neurobiology, Beijing Key Laboratory of Neural Regeneration and Repair, Beijing Laboratory of Brain Disorders (MOST), Beijing Institute for Brain Disorders, Capital Medical University, Beijing, 100069, China. yutaoy@ccmu.edu.cn.

Molecular Neurobiology
|April 16, 2015
PubMed

Insights

Resveratrol (RSV) inhibits glioma progression by decreasing Pokemon expression. Overexpressing Pokemon counteracts RSV

Area of Science:

  • Oncology
  • Molecular Biology
  • Neuroscience

Background:

  • POK erythroid myeloid ontogenic factor (Pokemon) is a proto-oncoprotein and transcriptional repressor implicated in tumorigenesis.
  • Resveratrol (RSV), a natural polyphenol, exhibits various health benefits, including potential anti-cancer properties.

Purpose of the Study:

  • To investigate the role of Pokemon in Resveratrol-induced biological effects in glioma cells.
  • To determine the effect of Resveratrol on Pokemon expression and its regulatory mechanisms in glioma.

Main Methods:

  • Investigated the impact of Pokemon overexpression on RSV-induced apoptosis, senescence, and proliferation.
  • Assessed RSV's effect on Pokemon promoter activity and expression.
  • Analyzed Sp1 DNA binding activity, HDAC1, and p300 recruitment to the Pokemon promoter.

Main Results:

  • Pokemon overexpression diminished RSV's anti-cancer effects (apoptosis, senescence, anti-proliferation).
  • RSV significantly reduced Pokemon promoter activity and Pokemon expression.
  • RSV inhibited Sp1 DNA binding to the Pokemon promoter without altering Sp1 expression or nuclear translocation.
  • RSV modulated histone modifiers, increasing HDAC1 and decreasing p300 recruitment to the Pokemon promoter.

Conclusions:

  • RSV exerts anti-cancer effects in glioma cells, partly through the downregulation of Pokemon.
  • RSV's mechanism involves inhibiting Pokemon promoter activity and modulating epigenetic regulators like HDAC1 and p300.
Keywords:
GliomaPokemonPromoterResveratrolSp1

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