为植物合成生物学开发新的二进制表达系统
Alexander C Pfotenhauer1, D Nikki Reuter1, Mikayla Clark1
1Center for Agricultural Synthetic Biology, University of Tennessee, Knoxville, TN, 37996, USA.
Plant cell reports
|December 27, 2023
概括
研究人员开发了一种新的植物二进制表达系统,使用来自紧素路径的元素. 该系统显著增强了转基因烟草中的基因表达,推进了植物合成生物学工具.
科学领域:
- 植物合成生物学 植物合成生物学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 一个强大的遗传工具集,包括转录调节器,对于推进植物合成生物学至关重要.
- 很少有高度功能和正交的转录调节剂已被确定用于植物应用.
- 在Penicillium citrinum中的紧素生物合成途径提供了潜在的调节元素.
研究的目的:
- 开发一种用于控制基因表达的新型植物二进制表达系统.
- 使用来自紧素路径的调节元件来设计合成转录因子.
- 增强植物合成生物学可用的遗传工具集.
主要方法:
- 用Nicotiana benthamiana中 compactin基因集群的运算子序列表达mlcR和合成促进剂.
- 通过将mlcR DNA结合域与激活域 (例如,QF) 融合,生成嵌合式转录因子.
- 评估N. benthamiana和转基因烟草中蛋白质和RNA水平的基因表达激活.
主要成果:
- 一个具有QF激活域的合成转录因子在N. benthamiana中增加了多达六倍的基因表达.
- 开发的系统实现了转基因烟草植物基因表达的五倍增加.
- 蛋白质和RNA水平的活性测量显示出强烈的相关性 (R2 = 0.94).
结论:
- 从紧素生物合成途径成功开发出一种新的植物二进制表达系统.
- 工程合成转录因子为植物精确控制基因表达提供了强大的工具.
- 这一框架有助于为植物合成生物学开发改进的遗传工具.
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