Cytotoxic Polyene Antibiotics from Myxococcus stipitatus JW111

Myxococcus stipitatus JW111이 생산하는 Polyene계 항암활성물질

  • Ahn, Jong-Woong (Bio-Organic Science Division, Korea Research Institute of Chemical Technology)
  • 안종웅 (한국화학연구원 화학물질부)
  • Published : 2002.05.31

Abstract

Phenalamides $A_1{\sim}A_3$ were reisolated as cytotoxic substances from culture broth of Myxococcus stipitatus JW111. The producing strain was isolated from the marine sediment collected off the shore of Geomun Island, Korea. The active principles were extracted from cell mass with acetone and successively purified by silica gel column chromatography, Sephadex LH-20 column chromatography, and finally recycling prep. HPLC. These compounds demonstrated significant cytotoxicity against certain human cancer cells, having $IC_50$ values ranging from 0.23 to 0.50 ${\mu}g/ml$. Moreover, they also inhibited the growth of adriamycin-resistant HCT/ADM human cancer cell line as well as its parent sensitive cell line.

점액세균의 대사산물을 대상으로 새로운 항암활성물질을 탐색하는 과정에서 해양퇴적물에서 분리한 균주 JW111의 균체 추출액이 인체유래의 각종 암세포에 대해 강한 활성을 나타냄을 발견하고, 먼저 생산균주인 JW111이 Myxococcus stipitatus임을 확인한 후 그 대사산물을 분리, 정제하여 구조결정한 결과, Phenalamide $A_1$, $A_2E, $A_3$임을 밝혔다. 이들은 공시된 감수성 암세포에 대해 모두 우수한 활성을 나타내었으며, $IC_50$의 값은 $0.23{\sim}0.50{\mu}g/ml$이었다. 또한 이들은 Adriamycin의 내성 세포주에 대해서도 감수성 세포주와 동일한 활성을 나타내어 내성을 나타내지 않음이 확인되었다.

Keywords

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