基于工程核激素受体的哺乳动物基因表达的多输入药物控制开关
Simon Kretschmer1,2, Nicholas Perry1,2,3, Yang Zhang1,2
1Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, California 94158, United States.
ACS synthetic biology
|June 14, 2023
概括
使用核激素受体 (NHRs) 的工程蛋白质开关能够精确控制细胞输出. 这些合成生物学工具允许使用多种药物同时调整基因表达.
科学领域:
- 合成生物学 合成生物学
- 分子工程是分子工程.
- 基因调节 基因调节
背景情况:
- 基于蛋白质的开关对于控制细胞输出至关重要,例如合成生物学中的基因表达.
- 集成多个信号的多输入开关为共享的蜂输出提供了增强的可控性.
- 核激素受体 (NHRs) 是对药物有反应的多输入控制系统的工程有前途的支架.
研究的目的:
- 设计新的多输入蛋白开关,以精确控制基因表达.
- 探索人类NHRs在开发临床相关,多药控制系统方面的潜力.
- 为了证明可调节的细胞反应,使用激动剂和对抗剂的组合准工程NHRs.
主要方法:
- 通过交换ecdysone受体 (EcR) 的联体结合域 (LBD) 与来自其他人类NHR的LBD,设计了VgEcR/RXR蛋白对.
- 研究了不同药物组合 (激动剂和对抗剂) 对基因表达的调节作用.
- 对单个和多个小分子药物反应的量化细胞输出水平.
主要成果:
- 通过修改人类NHRs,成功创建了新的多药调节蛋白开关.
- 证明当第一个LBD和时,第二个激动剂可以提高细胞输出.
- 通过使用多达三种同时存在的小分子药物,包括抗剂,实现了可调节的基因表达控制.
结论:
- 工程NHR为合成生物学应用提供了一个多功能和高度可控的平台.
- 开发的系统能够精确地编程细胞对多种药物的反应.
- 这项研究证实了NHR是创建复杂,多药物控制的生物电路的强大工具.
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