Dietary sulforaphane, a histone deacetylase inhibitor for cancer prevention

Emily Ho1, John D Clarke, Roderick H Dashwood

  • 1Department of Nutrition and Exercise Sciences, Oregon State University, Corvallis OR 97331, USA. emily.ho@oregonstate.edu

The Journal of Nutrition
|October 9, 2009
PubMed

Insights

Sulforaphane (SFN), a compound from cruciferous vegetables, acts as a histone deacetylase (HDAC) inhibitor. This dietary compound enhances histone acetylation, potentially preventing prostate cancer by promoting cell cycle arrest and apoptosis.

Area of Science:

  • Epigenetics
  • Molecular Biology
  • Nutritional Biochemistry

Background:

  • Histone acetylation is crucial for gene regulation and is altered in prostate cancer.
  • Histone deacetylase (HDAC) inhibitors represent a novel strategy for cancer chemoprevention.
  • Sulforaphane (SFN), a phytochemical, has demonstrated HDAC inhibitory activity in cancer cells.

Purpose of the Study:

  • To investigate the potential of sulforaphane (SFN) as a chemoprevention agent for prostate cancer by targeting aberrant histone acetylation patterns.
  • To elucidate the molecular mechanisms by which SFN affects histone acetylation, gene expression, and cell fate in prostate cancer.

Main Methods:

  • In vitro studies using human prostate cancer cells to assess SFN's effects on HDAC activity and histone acetylation.
  • Analysis of gene expression changes (P21, Bax) in response to SFN treatment.
  • Evaluation of SFN's impact on cell cycle progression and apoptosis induction.

Main Results:

  • SFN effectively inhibits HDAC activity in prostate cancer cells, leading to increased histone acetylation.
  • SFN treatment resulted in the derepression of tumor suppressor genes P21 and Bax.
  • SFN induced cell cycle arrest and apoptosis, indicative of its cancer-preventive properties.

Conclusions:

  • SFN demonstrates significant potential as a chemoprevention agent for prostate cancer due to its ability to modulate histone acetylation and induce cancer cell death.
  • Dietary incorporation of SFN-rich foods may offer a viable strategy for prostate cancer prevention in high-risk individuals.
  • These findings provide a scientific basis for future clinical trials investigating SFN in prostate cancer chemoprevention.

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