The present invention is based on the discovery that certain fermentation products of the marine actinomycete strains CNB392 and CNB476 are effective inhibitors of hypoproliferative mammalian cells. The CNB392 and CNB476 strains lie within the family Micromonosporaceae, and the generic epithet Salinospora has been proposed for this obligate marine group. The reaction products produced by this strain are classified as salinosporamides, and are particularly advantageous in treating neoplastic disorders due to their low molecular weight, low IC50 values, high pharmaceutical potency, and selectivity for cancer cells over fungi.
本发明基于以下发现:海洋放线菌 CNB392 和 CNB476 菌株的某些发酵产物是哺乳动物细胞增殖低下的有效
抑制剂。CNB392 和 CNB476 菌株属于小孢子菌科(Micromonosporaceae),人们为这一海洋放线菌属提出了一个统称 Salinospora。该菌株产生的反应产物被归类为盐孢酰胺,由于其分子量低、IC50 值低、药效高,且对癌细胞的选择性高于真菌,因此在治疗肿瘤性疾病方面特别有优势。