Amygdalin Modulates Cell Cycle Regulator Genes in Human Chronic Myeloid Leukemia Cells

  • Park, Hae-Jeong (Kohwang Medical Research Institute, Department of Pharmacology, College of Medicine, Kyung Hee University) ;
  • Baik, Haing-Woon (Department of Biochemistry and Molecular Biology, School of Medicine, Eulji University) ;
  • Lee, Seong-Kyu (Department of Biochemistry and Molecular Biology, School of Medicine, Eulji University) ;
  • Yoon, Seo-Hyun (Kohwang Medical Research Institute, Department of Pharmacology, College of Medicine, Kyung Hee University) ;
  • Zheng, Long-Tai (Kohwang Medical Research Institute, Department of Pharmacology, College of Medicine, Kyung Hee University) ;
  • Yim, Sung-Vin (Kohwang Medical Research Institute, Department of Pharmacology, College of Medicine, Kyung Hee University) ;
  • Hong, Seon-Pyo (Department of Oriental Pharmaceutical Sciences, College of Pharmacy, Kyung Hee University) ;
  • Chung, Joo-Ho (Kohwang Medical Research Institute, Department of Pharmacology, College of Medicine, Kyung Hee University)
  • Published : 2006.09.30

Abstract

To determine the anticancer effect of D-amygdalin (D-mandelinitrole-${\beta}$-D-gentiobioside) in human chronic myeloid leukemia cells K562, we profiled the gene expression between amygdalin treatment and control groups. Through 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay, the cytotoxicity of D-amygdalin was $57.79{\pm}1.83%$ at the concentration of 5 mg/mL for 24 h. We performed cDNA microarray analysis and compared the gene expression profiles between D-amygdalin (5 mg/mL, 24 h) treatment and control groups. Among the genes changed by D-amygdalin, we paid attention to cell cycle-related genes, and particularly cell cycle regulator genes; because arrest of cell cycle processing was ideal tactic in remedy for cancer. In our data, expressions of cyclin-dependent kinase inhibitor 1B (p27, Kip1) (CDKN1B), ataxia telangiectasia mutated (includes complementation groups A, C, and D) (ATM), cyclin-dependent kinase inhibitor 1C (p57, Kip2) (CDKN1C), and CHK1 checkpoint homolog (CHEK1, formally known as CHK1) were increased, while expressions of cyclin-dependent kinase 2 (CDK2), cell division cycle 25A (CDC25A), and cyclin E1 (CCNE1) were decreased. The pattern of these gene expressions were confirmed through RT-PCR. Our results showed that D-amygdalin might control cell cycle regulator genes and arrest S phase of cell cycle in K562 cells as the useful anticancer drug.

Keywords

References

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