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首页> 外文期刊>The Journal of Antibiotics: An International Journal >A NEW ANTHRACYCLINE ANTIBIOTIC, IT-62-B, CONVERTS THE MORPHOLOGY OF RAS-TRANSFORMED CELLS BACK TO NORMAL - TAXONOMY, FERMENTATION, ISOLATION, STRUCTURE ELUCIDATION AND BIOLOGICAL CHARACTERIZATION
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A NEW ANTHRACYCLINE ANTIBIOTIC, IT-62-B, CONVERTS THE MORPHOLOGY OF RAS-TRANSFORMED CELLS BACK TO NORMAL - TAXONOMY, FERMENTATION, ISOLATION, STRUCTURE ELUCIDATION AND BIOLOGICAL CHARACTERIZATION

机译:一种新型蒽环类抗生素IT-62-B将RAS转化细胞的形态转换回正常状态—分类法,发酵,分离,结构鉴定和生物学鉴定

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摘要

A new antibiotic, IT-62-B was isolated from the culture broth of Streptomyces sp. IT-62 by extraction with acetone and then with ethyl acetate, followed by conventional column chromatography using silica gel, Sephadex LH-20 and silica ODS. Its structure (C39H47NO15, MW 769) was determined by H-1, C-13 NMR, MS, IR and UV spectrometric techniques to be a new member of the baumycin-group anthracyclines. It showed moderate activity against Gram-positive bacteria and had antitumor activity against various tumor cell lines. Further, antibiotic IT-62-B converted the morphology of ras-transformed NIH3T3 cells and T-cells back to normal at concentrations inhibiting cell growth by 30% or more. [References: 16]
机译:从链霉菌属(Streptomyces sp。)的培养液中分离出新的抗生素IT-62-B。通过用丙酮萃取,然后用乙酸乙酯萃取,然后使用硅胶,Sephadex LH-20和二氧化硅ODS进行常规柱色谱纯化IT-62。通过H-1,C-13 NMR,MS,IR和UV光谱技术确定了其结构(C39H47NO15,MW 769),是鲍霉素类蒽环类药物的新成员。它对革兰氏阳性细菌显示中等活性,对各种肿瘤细胞系具有抗肿瘤活性。此外,抗生素IT-62-B在抑制细胞生长30%或更多的浓度下,将经ras转化的NIH3T3细胞和T细胞的形态恢复为正常。 [参考:16]

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