合成同质素乳传感器用于使用LuxR型调节器的菌素
Min Zeng1, Biprodev Sarker1, Nathaniel Howitz1
1Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States.
ACS synthetic biology
|December 11, 2023
概括
研究人员为Gram阳性细菌Bacillus subtilis开发了合成的homo-serine乳 (HSL) 传感器. 这一突破使得可编程的细胞-细胞通信在多种细菌联盟中成为可能.
科学领域:
- 合成生物学 合成生物学
- 微生物的沟通方式
- 细菌遗传学 细菌遗传学
背景情况:
- 经典的质量检测通常涉及格拉姆阴性 (同质素乳,HSL) 和格拉姆阳性 (寡) 细菌的不同的信号.
- 在细菌群体中编程动态反应需要多功能通讯系统.
研究的目的:
- 在阳性细菌 Bacillus subtilis.中设计合成HSL传感器.
- 为了实现基于HSL的细胞-细胞沟通,在合成生物学应用程序的格拉姆阳性细菌.
主要方法:
- 使用全性LuxR型调节剂 (RpaR,LuxR,RhlR,CinR) 和组合设计的合成促进剂.
- 通过不同的促进子元素 (-35,-16,-10,转录起始区域) 和调节器表达量化传感器活性.
- 运用实验的统计设计来识别促销器设计中的序列功能关系.
主要成果:
- 实现高达293倍的合成HSL传感器激活.
- 确定了促进器区域和对对相互作用对传感器活动的显著影响.
- 在B. subtilis中展示了具有≥20倍动态范围的功能HSL传感器,用于四个不同的HSL信号.
结论:
- 建立了第一个功能性的HSL传感器在一个格拉姆阳性细菌, Bacillus subtilis.
- 这项工作为在微生物联盟中设计物种间交流提供了基础.
- 能够在合成生物学和微生物社区工程中实现新的应用.
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