控制电路是Saccharomyces cerevisiae生长优化的基础
Viviana Nguyen1, Pu Xue2, Yifei Li3
1Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA; Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.
Metabolic engineering
|September 22, 2023
概括
糖菌通过动态调节循环AMP (cAMP) 水平,协调细胞代谢和资源分配,以在各种条件和营养物质可用性中最大限度地生产生物质来优化生长.
科学领域:
- 生物化学和分子生物学
- 系统生物学 系统生物学
- 微生物生理学 微生物生理学
背景情况:
- 微生物生长取决于从有限的资源中协调合成细胞组件.
- 循环AMP (cAMP) 信号编排了Saccharomyces cerevisiae中的新陈代谢,但其在资源分割和生物质增长中的定量作用尚不清楚.
研究的目的:
- 在S. cerevisiae中量化剖析信号介导的增长优化.
- 了解cAMP介导电路如何推动资源分配和生物质增长.
主要方法:
- 将实验方法与数学建模结合起来.
- 在各种基质条件和干扰下研究了S. cerevisiae的生长动态.
主要成果:
- 通过对测试基质的cAMP控制和在葡萄糖吸收受损的情况下,S. cerevisiae通过测试基质的cAMP控制实现最大或接近最大的稳定状态增长.
- 最佳cAMP度有所不同,这表明特定条件的资源分配策略.
- 细胞动态重编程cAMP水平以快速适应营养变化.
- 额外的调节系统,如GCN2介导的氨基酸控制,有助于增长最大化.
结论:
- 建立了对S. cerevisiae.全球资源分配的系统理解.
- 提供了对酵母生理学的定量见解.
- 在生物技术应用中提供了代谢菌株工程的潜力.
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