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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Combinatorial biosynthesis of antitumor indolocarbazole compounds.
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Combinatorial biosynthesis of antitumor indolocarbazole compounds.

机译:抗肿瘤吲哚并咔唑化合物的组合生物合成。

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摘要

Rebeccamycin and staurosporine are natural products with antitumor properties, which belong to the family of indolocarbazole alkaloids. An intense effort currently exists for the generation of indolocarbazole derivatives for the treatment of several diseases, including cancer and neurodegenerative disorders. Here, we report a biological process based on combinatorial biosynthesis for the production of indolocarbazole compounds (or their precursors) in engineered microorganisms as a complementary approach to chemical synthesis. We have dissected and reconstituted the entire biosynthetic pathway for rebeccamycin in a convenient actinomycete host, Streptomyces albus. This task was achieved by coexpressing different combinations of genes isolated from the rebeccamycin-producing microorganism. Also, a gene (staC) was identified in staurosporine-producing microbes and was shown to have a key role to differentiate the biosynthetic pathways for the two indolocarbazoles. Last, incorporation of the pyrH and thalgenes, encoding halogenases from different microorganisms, resulted in production of derivatives with chlorine atoms at novel positions. We produced >30 different compounds by using the recombinant strains generated in this work.
机译:瑞贝卡霉素和星形孢菌素是具有抗肿瘤性质的天然产物,属于吲哚咔唑生物碱家族。目前,人们正在为生产吲哚并咔唑衍生物进行大量努力,以治疗多种疾病,包括癌症和神经退行性疾病。在这里,我们报告了一种基于组合生物合成的生物过程,用于在工程微生物中生产吲哚并咔唑化合物(或其前体),作为化学合成的补充方法。我们已经在方便的放线菌宿主,白色链霉菌中解剖并重组了瑞贝卡霉素的整个生物合成途径。通过共表达从产生雷贝卡霉素的微生物分离的基因的不同组合来实现此任务。此外,在产生星形孢菌素的微生物中鉴定出一个基因(staC),并且该基因具有区分两种吲哚并咔唑的生物合成途径的关键作用。最后,并入编码来自不同微生物的卤化酶的pyrH和thalgenes,导致在新位置产生具有氯原子的衍生物。我们使用这项工作中产生的重组菌株生产了30多种不同的化合物。

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