Natural Product Sciences

The Korean Society of Pharmacognosy (한국생약학회)
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Antioxidant Activity and Its Mechanism of Paeonia lactiflora Pall Extract

  • Heo, Jee-In (Department of Biochemistry, Hallym University Medical School) ;
  • Kim, Jeong-Hyeon (Department of Biochemistry, Hallym University Medical School) ;
  • Lee, Jeong-Min (Department of Biochemistry, Hallym University Medical School) ;
  • Kim, Sung-Chan (Department of Biochemistry, Hallym University Medical School) ;
  • Park, Jae-Bong (Department of Biochemistry, Hallym University Medical School) ;
  • Kim, Jaebong (Department of Biochemistry, Hallym University Medical School) ;
  • Lee, Jae-Yong (Department of Biochemistry, Hallym University Medical School)
  • Received : 2013.02.20
  • Accepted : 2013.03.14
  • Published : 2013.03.31
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Abstract

Paeonia lactiflora Pall (PL) has been used as a traditional herbal medicine in China, Korea, and Japan for more 1,200 years. PL has reported to have antioxidant activity and protective effect of cells from oxidative stress, although the mechanism has not been verified. FOXO3a is a transcription factor that binds to its target gene's consensus FOXO binding site. FOXO3a protein modulates the various biological functions including cell cycle control, apoptosis, DNA repair, and ROS detoxification. Therefore, FOXO3a activity is associated with cancer, aging, diabetes, infertility, neurodegeneration, and immune system dysfunction. Here we found that FOXO3a was activated by PL extract. Transcriptional target genes such as MnSOD, p27, and GADD45 were activated by PL extract. Protein levels of MnSOD and catalase were increased, consequently, ROS level was reduced in HEF cells by PL extract. These findings suggest that PL extract has an antioxidant activity through FOXO activation and thereby activation of FOXO target genes, MnSOD and catalase.

Keywords

References

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