摘要
目的:研究济南假单胞菌的发酵工艺、提取路线及代谢产物的制备,观察其抗肿瘤活性。方法:通过发酵、提取、分离、结晶、重结晶, 得到棕褐色针状结晶( Ps161) 。结果: Ps161 025mg/kg 和055mg/kg 对 H22 、 U14 均有明显的抑制作用,对 H22 抑瘤率分别为547 % 和441 % , P< 001 ; U14 为652 % 和439 % , P< 001 。采用 M T T 法观察了 Ps161 对4 种人类肿瘤细胞株增殖的抑制作用,当 Ps161 0225μg/ml 时,对 H L60 和小细胞肺癌的抑制作用为100 % ,当浓度减少到010μg/ml 时,抑制作用消失;在060μg/ml 时,对 K562 、 S G S7901 的抑制作用为100 % ,当浓度减少到005μg/ml 以下时,抑制作用消失。结论:药效结果表明, Ps161 具有明显的抗肿瘤活性,毒性较低,对光、热稳定性良好,是一种具有较好开发前景的抗肿瘤抗生素。
Objective:To study the ferment technology,extracting method and preparation of Ps 161 and to observe the anti tumor activities.Methods:Ps 161 is obtained by fermenting,extracting,seperating,crystalizing and re crystalizing.Results:The Inhibition rates of Ps 161 on H 22 are 54 7% and 44 1% at 0 55/kg and 0 25/kg on U 14 are 65 2% and 43 9% at 0 55/kg and 0 25/kg The inhibition of Ps 161 on four kinds of tumor cell lines are investigated with MTT method.The inhibition rates of Ps 161 on HL 60 and small cell lung cancer are 100% at 0 225μg/ml and on K562 and SGC 7 901 are 100% at 0 60μg/ml.Conclusions:Ps 161 has a bright future as an anti tumor antibiotic.