Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Anti-apoptotic Effects of Terrein on Etoposide-induced Apoptosis of U937 Human Leukemia Cells

Terrein의 etoposide에 의해 유도된 apoptosis 저해효과

  • 이충환 (생명공학연구소 면역제어물질 연구실) ;
  • 이호재 (생명공학연구소 면역제어물질 연구실) ;
  • 김진희 (생명공학연구소 면역제어물질 연구실) ;
  • 김현아 (생명공학연구소 면역제어물질 연구실) ;
  • 고영희
  • Published : 2000.04.01
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Abstract

In the course of screening for the substances inhibiting apoptosis ofU937 human leukemia cell induced by etoposide, a fungal strain F80834 producing a high level of inhibitor was selected. The inhibitory substance was purified and identified as terrein by spectroscopic methods of UV, EI-MS, IH-NMR, 13C-NMR and DEPT. Terrein showed inhibitory activity of caspase 3, a major protease of apoptosis cascade, with an $IC_{50}$ value of $20\mu\textrm{g}/ml$ after 7 hrs of treatment. It also showed protective effect against cell death with an $IC_{50}$ value of $10\mu\textrm{g}/ml$ on U937 cells induced by etoposide after 24 hrs of treatment, but did not show any cytotoxicity at the same condition without etoposide.

미생물로부터 U937 세포주의 etoposide에 유발된 apoptosis 저해물질을 탐색한 결과 곰팡이 F80834 균주를 선발하였다. 균주 배양액으로부터 저해물질을 분리한 후 UV, EIMS, 1H-NMR, 13C-NMR, DEPT 등의 기기분석을 실시한 결과 terrein으로 동정되었다. 이 물질은 $IC_{50}$ $20\mu\textrm{g}/ml$의 농도로 U937 세포주의 etoposide에 의한 caspase 3 유도를 저해하였다. Etoposide에 의한 세포의 사멸도 IC50 $10\mu\textrm{g}/ml$ 농도로 저해하였으며, 동일한 농도 조건에서 단독 처리시 세포 독성을 나타내지 않았다.

Keywords

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