在工程化Saccharomyces cerevisiae中从简单糖中进行维拉生物合成
Peter H Winegar1, Graham A Hudson1, Luisa B Dell2
1Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA; Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA; California Institute for Quantitative Biosciences (QB3 Institute), University of California, Berkeley, CA, 94720, USA.
Metabolic engineering
|July 29, 2024
概括
研究人员对酵母进行了改造,以产生维拉,这是癌症药物候选人环胺的前体. 这种微生物生物合成的突破使得可扩展生产的类固醇化物用于药物开发.
科学领域:
- 生物技术是生物技术.
- 代谢工程是代谢工程.
- 自然产品生物合成 自然产品生物合成
背景情况:
- 类固醇类化合物是有价值的药品,但它们的自然生产难以扩展.
- 环胺,一种类固醇类化合物,抑制了 Hedgehog 信号通路,是有前途的癌症药物候选药物.
- 目前环胺生产的局限性阻碍了其治疗开发.
研究的目的:
- 建立一种可扩展和可持续的生产类固醇类化合物的方法.
- 为生物合成环胺前体而设计微生物.
- 为微生物生产环胺及其衍生物奠定基础.
主要方法:
- 工程化Saccharomyces cerevisiae (酵母菌) 用于异种生产维拉.
- 调节了原生酵母通路 (梅瓦诺酸盐,兰醇) 并将流量从厄戈斯特醇转移到胆固醇.
- 使用来自七种物种的八种异质酶表达了一个重构的五步维拉生物合成途径.
主要成果:
- 从简单糖 (葡萄糖,银糖) 中实现微生物生产维拉.
- 通过液体染色学质谱测量证实了维拉的身份和纯度,与植物生产的标准相匹配.
- 在优化后达到83±3μg/L (4.1±0.1μg/g DCW) 的最终维拉标位.
结论:
- 在工程酵母中首次证明了类固醇类化合物的异质生产.
- 建立了循环胺和相关化合物的微生物生物合成的基础平台.
- 铺平了用于制药应用的可扩展,可持续生产类固醇类天然产品的道路.
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