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Quercetin glucuronides inhibited 2-aminofluorene acetylation in human acute myeloid HL-60 leukemia cells

H M Kuo1, H J Ho, P D L Chao

  • 1Department of Parasitology, China Medical College, Taichung, Taiwan, Republic of China.

Phytomedicine : International Journal of Phytotherapy and Phytopharmacology
|December 19, 2002
PubMed

Insights

Quercetin glucuronides inhibit 2-aminofluorene acetylation in human leukemia cells. This compound also demonstrated dose-dependent cytotoxicity, suggesting potential therapeutic applications in cancer research.

Area of Science:

  • Biochemistry
  • Toxicology
  • Pharmacology

Background:

  • Arylamine carcinogens like 2-aminofluorene form DNA adducts in target tissues and leukocytes.
  • Antioxidants can reduce the N-acetylation of 2-aminofluorene, a key metabolic activation step.
  • The role of quercetin glucuronides in modulating carcinogen metabolism in leukemia cells is unexplored.

Purpose of the Study:

  • To investigate the effect of quercetin glucuronides on 2-aminofluorene N-acetylation in human acute myeloid leukemia HL-60 cells.
  • To assess the cytotoxicity of quercetin glucuronides in these leukemia cells.

Main Methods:

  • Exposure of human acute myeloid leukemia HL-60 cells to 2-aminofluorene.
  • Treatment of cells with varying concentrations of quercetin glucuronides.
  • Measurement of 2-aminofluorene acetylation levels and cell viability.

Main Results:

  • Human leukemia cells were confirmed to be capable of acetylating 2-aminofluorene.
  • Quercetin glucuronides significantly inhibited 2-aminofluorene acetylation in intact HL-60 cells.
  • Quercetin glucuronides exhibited dose-dependent cytotoxicity against the examined leukemia cells.

Conclusions:

  • Quercetin glucuronides can modulate the metabolism of the carcinogen 2-aminofluorene in human leukemia cells.
  • The observed cytotoxicity suggests a potential role for quercetin glucuronides in leukemia therapy.
  • Further research is warranted to explore the therapeutic potential of quercetin glucuronides in hematological malignancies.

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