在Marchantia多态生物中优化促进体和子细胞定位,以实现构成性转基因表达
Sze Wai Tse1, Davide Annese1, Facundo Romani1
1Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK.
Plant & cell physiology
|June 1, 2024
概括
我们对Marchantia polymorpha中的构成性促进体进行了基准测试,用于合成生物学. 新的促进者在组织中提供高基因表达,没有增长惩罚,扩大生物生产的遗传工具.
科学领域:
- 植物分子生物学 植物分子生物学
- 合成生物学 合成生物学
- 生物技术是生物技术.
背景情况:
- 马尔坎蒂亚多态生物 (Marchantia polymorpha) 是比较研究和合成生物学中的一个关键模型生物.
- 一个强大的遗传部件工具箱对于可预测的异质基因表达在Marchantia生物生产中至关重要.
- 在Marchantia的现有构成性发起人需要进行基准测试来评估他们的实用性.
研究的目的:
- 系统地描述和比较Marchantia polymorpha中基因表达的构成性促进体.
- 确定能够实现高水平基因表达而不会对植物生长产生负面影响的促进剂.
- 扩大Marchantia社区研究人员可用的遗传工具.
主要方法:
- 从以前特征和新型构成性促进体的表达水平的比较.
- 在不同组织和亚细胞区间评估促进剂的性能.
- 评估植物生长和生物质积累作为促进者效用指标.
- 通过表达一个多晶贝他林合成基因盒 (RUBY) 来证明促进子功能.
主要成果:
- 花草马赛克病毒35S促进体 (pro35S×2) 产生了最高的蛋白质水平,但抑制了生长.
- 来自Marchantia的促剂乙烯反应因子1和II类HOMEODOMAIN-LEUCINEZIPPER基因提供了高,组织范围的表达,没有增长处罚.
- 将异质蛋白向细胞质中提高了表达水平,而没有显著的生长负担.
- 通过使用这些促进剂,成功地实现了用于贝他林合成的代谢酶的协调表达.
结论:
- 新的构成性促进体已经被表征,显著扩大了Marchantia polymorpha.的遗传工具包.
- 这些促进体提供可预测和可调的基因表达,对于合成生物学应用和生物生产至关重要.
- 这些发现为推进Marchantia模型系统的研发提供了宝贵的资源.
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