使用CcaSR系统对B. subtilis基因表达的光遗传控制
Daniel J Haller1, Sebastian M Castillo-Hair2,3, Jeffrey J Tabor4,5,6,7
1Systems, Synthetic, and Physical Biology Program, Rice University, Houston, TX, USA.
Methods in molecular biology (Clifton, N.J.)
|December 26, 2024
概括
研究人员为Bacillus subtilis开发了一种新的光遗传系统,可以使用光来精确控制基因表达. 该系统通过绿色和红色光刺激提供基因电路的高分辨率编程.
科学领域:
- 合成生物学 合成生物学
- 微生物学 微生物学
- 分子生物学分子生物学
背景情况:
- 光遗传学提供了对生物过程的精确控制.
- 控制Bacillus subtilis中的基因表达对于各种应用至关重要.
- 在B. subtilis中控制基因表达的现有方法有局限性.
研究的目的:
- 开发和描述第一个用于 Bacillus subtilis 的转录控制的光遗传系统.
- 为了使光可诱导和光可抑制的基因表达具有高时空分辨率.
- 为在B. subtilis.中利用这个新系统提供协议.
主要方法:
- 从Synechocystis PCC 6803对B. subtilis的CcaSR两组系统的调整.
- 用B. subtilis菌株进行工程,以表达CcaS (histidine kinase) 和CcaR (响应调节器).
- 开发细菌生长,菌株工程和基于光的诱导/抑制协议.
主要成果:
- 成功实施了B. subtilis CcaSR v1.0系统,用于光控制的基因表达.
- 用绿光激活基因表达的演示,用红光停用.
- 化学诱导剂允许调整基底表达水平和诱导大小.
结论:
- B. subtilis CcaSR v1.0 系统为精确,光介导的基因表达控制提供了一个强大的工具.
- 该系统与各种向基因兼容,扩大了B. subtilis.中的合成生物学应用.
- 提供的协议有助于在这种重要的细菌物种中采用和使用光遗传控制.
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