Tumor cell growth inhibition and antioxydative activity of flavonoids from the stem bark of Cudrania tricuspidata

꾸지 뽕나무로부터 분리한 flavonoid계 화합물의 암세포성장 저해 및 항산화 활성

  • Lee, In-Kyoung (Genetic Engineering Research Institute, Korea institute of Science and Technology) ;
  • Song, Kyung-Sik (Department of Agricultural Chemistry, Kyungpook National University) ;
  • Kim, Chang-Jin (Genetic Engineering Research Institute, Korea institute of Science and Technology) ;
  • Kim, Hwan-Muk (Genetic Engineering Research Institute, Korea institute of Science and Technology) ;
  • Oh, Goo-Taeg (Genetic Engineering Research Institute, Korea institute of Science and Technology) ;
  • Yoo, Ick-Dong (Genetic Engineering Research Institute, Korea institute of Science and Technology)
  • 이인경 (한국과학기술연구원 유전공학연구소) ;
  • 송경식 (경북대학교 농과대학 농화학과) ;
  • 김창진 (한국과학기술연구원 유전공학연구소) ;
  • 김환묵 (한국과학기술연구원 유전공학연구소) ;
  • 오구택 (한국과학기술연구원 유전공학연구소) ;
  • 유익동 (한국과학기술연구원 유전공학연구소)
  • Published : 1994.04.30

Abstract

Five cytotoxic and antioxidative flavonoids were isolated from the stem bark of Cudrania tricuspidata by consecutive purification using HP-20, silicagel and prep-HPLC. They were identified as taxifolin, orobol, eriodictyol, dihydrokaempferol and steppogenin by means of spectral studies. The antioxidative activities $(IC_{50})$ assayed by TBA method of these compound $1{\sim}5$ to were 6, 3, 3, >50, and $10\;{\mu}g/ml$, respectively. The effect on the growth inhibition $(IC_{50})$ of these compounds against P388 cell line were found to be 0.18, 3.3, 15 and $6.2\;{\mu}g/ml$, respectively in the order of compound 2 to 5.

꾸지 뽕나무의 줄기껍질로부터 P388 tumor cell line에 대한 세포 성장 저해활성과 흰쥐 간 microsome 분획의 과산화 지질을 사용하여 $Fe^{++}/\;ascorbate$법으로 측정한 결과 세포 성장 저해활성과 항산화활성을 갖는 5개의 flavonoid계 화합물을 분리하였다. 분리된 화합물의 구조분석을 실시한결과 각종 spectral data와 보고된 문헌에 의하여 taxifolin, orobol, eriodictyol, dihydrokaempferol, steppogenin으로 각각 동정되었다. 이 화합물들의 항산화활성은 $IC_{50}$이 각각 6, 3, 3, >50, $10\;{\mu}g/ml$이었고 taxifolin을 제외한 P388 cell line에 대한 세포 성장저해는 각각 $IC_{50}$이 0.18, 3.3, 15, $6.2\;{\mu}g/ml$이었다. 한편 Escherichia coli BE 1186, Salmonella thyphimurium SL 1102, Staphylococcus aureus IFO 12732, Staphylococcus aureus R 209, Candida albicans에 대해서는 항균활성을 나타내지 않았다.

Keywords