菌和其他细菌生物合成基因集群的多种表达
Dipesh Dhakal1, Campbell W Eckhardt1, Yujia Jiang1
1Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, Florida 32610, United States.
ACS synthetic biology
|September 2, 2025
概括
研究人员为微生物宿主开发了新的表达系统,使得从细菌和蓝菌生物合成基因集群 (BGC) 发现自然产物 (NP). 这一突破有助于跨越多种细菌和菌系的NP发现.
科学领域:
- 微生物学
- 合成生物学
- 自然产品的发现
背景情况:
- 生物合成基因集群 (BGC) 的异质表达对于自然产品 (NP) 的发现至关重要.
- 在多样化的微生物宿主中保持一致的表达仍然是一个重大挑战.
- 现有的方法往往缺乏适应各种细菌系的BGC的多功能性,包括蓝藻细菌.
研究的目的:
- 在多种微生物宿主中开发多功能跨类向量系统来表达细菌和蓝菌BGC.
- 使用报告基因和已知的BGC验证这些系统的有效性.
- 建立强大的平台来加速NP的发现和理解BGC的功能.
主要方法:
- 与格拉姆阴性菌 (大肠杆菌),格拉姆阳性菌 (细菌) 和菌宿主 (Synechocystis PCC 6803,Anabaena sp. 这里是PCC7120).
- 使用增强黄色光蛋白 (eYFP) 的构成性和诱导性表达的验证.
- 运用载体来表达BGCs的shinorine和violacein,使用促进器调,基质养,BGC重构和可诱导控制.
主要成果:
- 在大肠杆菌,B. subtilis,Synechocystis PCC 6803和Anabaena sp中成功表达了BGC和其他细菌. 这就是PCC7120.
- 通过优化表达策略增强NP产生和减轻宿主毒性.
- 证明了Bacillus subtilis作为蓝色细菌NPBGC的异质宿主的能力.
结论:
- 开发的跨类向量系统为异构BGC表达提供了多功能平台.
- 这些系统显著提升了从各种细菌和蓝菌来源发现新型天然产品的潜力.
- 这些发现为合成生物学和微生物生物技术的更广泛应用铺平了道路.
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