在大肠杆菌中以前体为导向的epothilone生物合成
Christopher N Boddy1, Kinya Hotta, Martha Lovato Tse
1Departments of Chemical Engineering, Chemistry, and Biochemistry, Stanford University, Stanford, California 94305-5025, USA.
Journal of the American Chemical Society
|June 17, 2004
概括
工程细菌现在可以使用前体导向生物合成方法生产抗癌药物epothilone C. 这种方法结合了化学合成和酶过程,以高效地生产药物.
科学领域:
- 生物技术是生物技术.
- 合成生物学 合成生物学
- 化学生物学 化学生物学
背景情况:
- 工程生物合成途径对于生产复杂分子至关重要.
- 前体导向生物合成整合了化学合成和酶的过程.
- 这种方法可以将非本地原料纳入生物通路.
研究的目的:
- 在大肠杆菌中使用前体导向生物合成产生抗癌剂epothilone C.
- 证明在工程生物合成途径中使用化学合成基质的可行性.
- 为了达到与异质系统中的本地宿主相美的epothilone C生产水平.
主要方法:
- 设计了一种大肠杆菌菌株,以表达关键的epohilone生物合成途径模块 (epoD-M6,epoE和epoF).
- 化学合成所需的基质来补充表达的生物合成酶.
- 利用高密度细胞培养条件进行前体养和产品形成.
主要成果:
- 在工程Escherichia coli.中成功产生了epothilone C.
- 达到1mg/L的产量水平,与本地宿主相美.
- 在其他异质宿主中表现出比之前报告的更高的生产产量.
- 验证了用于整合合成基质的前体导向方法.
结论:
- 在工程Escherichia coli中,前体导向生物合成是生产epotilone C.的有效策略.
- 这种方法提供了一个可扩展的平台,用于生成具有潜在改善药理性质的epothilone类似物.
- 该方法为药物发现和开发提供了多基酸骨干的化学修改.
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