重新连接本地转录后全球调节器以实现设计,多层遗传电路
Trevor R Simmons1, Gina Partipilo1, Ryan Buchser1
1McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA.
Nature communications
|October 9, 2024
概括
科学家们通过重新连接碳储存监管 (Csr) 网络来设计了新的"拖放"遗传工具. 这种合成生物学进步使复杂的细菌基因调节和物种间的控制成为可能.
科学领域:
- 合成生物学 合成生物学
- 分子生物学分子生物学
- 微生物工程是微生物的工程.
背景情况:
- 合成生物学的扩张需要多功能调节工具来精确控制基因表达.
- 工程复杂的遗传电路需要强大的和适应性的监管元素.
- 细菌中的碳储存监管 (Csr) 网络为转录后控制提供了一个保存的平台.
研究的目的:
- 开发一种"拖放"方法来设计复杂的转录后调节电路.
- 为了利用大肠杆菌在碳储存监管 (Csr) 网络中的本地相互作用来进行新型遗传控制.
- 为各种细菌基因表达结果创建一个基因工具箱的调节元素.
主要方法:
- 理性工程的RNA蛋白相互作用,以创建一个12个缓冲门的遗传工具箱.
- 通过集成Csr激活的5' UTR.开发一个Csr调节的NOT门.
- 部署缓冲器和非门来构建双向调节器,布尔逻辑门 (OR,NOR,AND,NAND) 和脉冲生成电路.
- 将一个Csr调节的BUFFER Gate移植到三个不同的细菌物种中.
主要成果:
- 创建了一个由12个缓冲门组成的基因工具箱,实现了15倍的表达范围.
- 一个功能性的Csr-regulated NOT Gate已经成功开发和集成.
- 构建了复杂的调节电路,包括布尔逻辑门和脉冲发生器.
- 经过Csr调节的BUFFER Gate在三种工业相关的细菌物种中展示了可移植性.
结论:
- 开发的方法可以通过重新连接CSR网络来设计复杂的转录后控制系统.
- 这种合成生物学平台为各种细菌调节提供了多功能和适应性的遗传工具.
- 由于Csr网络的保护性质,这些工具可以在多种细菌物种中应用,这突显了它们的广泛工业相关性.
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