Collaborative Research: SusChEM: A Robust Yeast Platform for the Synthesis and Engineering of Polyketide-Based Pharmaceuticals and Chemicals

da Silva, Nancy A./Tang， yi聚酮衍生的天然产物是一类重要的药物，几乎应用于所有主要类型的人类疾病，包括抗生素、抗癌和抗高胆固醇血症。近年来，由于其合成和结构的灵活性，聚酮类化合物作为可再生化学品和燃料也受到了广泛的关注。本研究将对酿酒酵母进行高水平的聚酮合成，为可持续生产化学品和药品提供新方法。这项研究还将有助于发现新的酶和生物化学物质。这项研究将通过提供新的、可再生的方法来生产各种商业上重要的化合物，从而影响该领域。从教育和推广的角度来看，该研究将跨越工程、化学和生物的核心学科，因此将为学生在多个领域的培训提供充足的机会。聚酮类化合物是微生物和植物的代谢物，对人类健康有重大影响。它们在细菌、真菌和植物中由简单的初级代谢物（如乙酰辅酶a和丙二酰辅酶a）组成的聚酮合成酶合成。随着越来越多的基因组序列的出现和对聚酮生物合成的了解的增加，在酿酒酵母等模式生物中设计这些化合物的生产有了重大的机会。本研究将结合聚酮化学和酵母代谢工程，使酵母成为不同有价值的真菌和植物聚酮的高水平生产宿主。将利用最先进的合成生物学和遗传工具来优化酵母提供聚酮前体的能力，以及丰富表达瓶颈、限速聚酮合酶的能力。工程酵母将用于生产三组聚酮化合物：i)来自真菌王国的具有治疗价值的化合物；Ii)生化构建模块和生物表面活性剂；iii)从测序真菌物种的基因组挖掘中发现新的科学化合物。这种整合的方法将导致酵母异种宿主强大，通用和插入的聚酮生产，并可以揭示酵母代谢和优化外源（和困难）蛋白表达的见解。利用各种聚酮合成酶进行生化生产，可以实现增值化学品的可再生生产，并检验相应聚酮合成酶的灵活性。该奖项由CBET部门的生物技术和生化工程项目颁发，由材料研究部的生物材料项目共同资助。

1605357/1605877Da Silva, Nancy A./Tang, YiPolyketide-derived natural products represent an important class of pharmaceuticals with application to nearly all major types of human diseases, including antibiotics, anticancer, and anti-hypercholesterolemia. In recent years, polyketides have also been attractive as renewable chemicals and fuels, due to the flexibility in their synthesis and their structures. This research will engineer the yeast Saccharomyces cerevisiae for the high-level synthesis of polyketides, leading to new methods for the sustainable production of chemicals and pharmaceuticals. The research will also enable the discovery of new enzymes and biochemicals. The research will impact the field by providing new, renewable ways of producing a variety of commercially important compounds. From an educational and outreach perspective, the research will span the core disciplines of engineering, chemistry and biology, and will therefore provide ample opportunities for student training in multiple areas. Polyketides are microbial and plant metabolites that have significantly impacted human health. They are synthesized in bacteria, fungi and plants by polyketide synthases from simple primary metabolite building blocks such as acetyl-CoA and malonyl-CoA. As more genome sequences have become available and understanding of polyketide biosynthesis grows, there are significant opportunities to engineer the production of these compounds in model organisms such as Saccharomyces cerevisiae. This research will combine polyketide chemistry and yeast metabolic engineering to outfit yeast as a high-level production host for different valuable fungal and plant polyketides. State of the art synthetic biology and genetic tools will be used to optimize the capacity of yeast to supply the polyketide precursors, as well as to abundantly express the bottleneck, rate-limiting polyketide synthases. The engineered yeast will be applied towards the production of three sets of polyketide compounds: i) compounds of therapeutic values from the fungal kingdom; ii) biochemical building blocks and biosurfactants; and iii) novel compounds new to science discovered from genome mining of sequenced fungal species. This integrated approach will lead to yeast heterologous hosts that are powerful, general and drop-in for polyketide production, and can reveal insights into yeast metabolism and optimization of foreign (and difficult) protein expression. The work on biochemical production using various polyketide synthases can enable renewable production of value added chemicals, as well as examine the dexterity of corresponding polyketide synthases.This award by the Biotechnology and Biochemical Engineering Program of the CBET Division is co-funded by the Biomaterials Program of the Division of Materials Research.