通过结合表面显示和共同培养,在大肠杆菌中选改性抗微生物的选平台
1Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747 AG, the Netherlands.
Microbiological research
|February 27, 2026
概括
这项研究提出了一种新的方法,用于发现使用工程Escherichia coli的新型抗生素. 该系统成功地产生并检测出具有抗菌活性的改性,为抗生素研究铺平了道路.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 合成生物学 合成生物学
背景情况:
- 抗生素耐药性是全球主要的健康威胁,需要发现新型抗菌剂.
- 非核糖体 (NRP) 是有前途的,但由于它们的非基因编码性质,它们的工程设计具有挑战性.
- 核糖体合成和翻译后修改的 (RiPPs) 提供了一个基因编码的平台,用于创建多样化的结构.
研究的目的:
- 开发一种用于发现和评估工程抗微生物的新型系统.
- 利用大肠杆菌表面显示和共同培养,用于细胞外生产细胞内修饰的RiPPs.
- 设计一种模仿布雷维西丁的RiPP突变体,并评估其抗菌潜力.
主要方法:
- 使用大肠杆菌表面显示与Lpp-OmpA和Omp1来呈现工程RiPP前体.
- 使用OspR和SyncM酶对的细胞内修饰,以引入ornithine和methyllanthionine环.
- 共同培养工程化大肠杆菌菌株以通过显示的领导酶LahT150.0.处理细胞外.
- 使用InaK来增强大型蛋白质的显示,包括领导酶.
主要成果:
- 在超级生物中成功生成并检测出一种经过修改的Brevicidine模仿 (Bre-re-mutant).
- 工程对目标细菌的抗微生物活性已被证明.
- 对于表面显示蛋白Lpp-OmpA和Omp1.1,实现了高显示效率 (超过90%).
- 验证了共同培养系统,以有效地进行细胞外修饰和检测RiPPs.
结论:
- 开发的大肠杆菌表面显示和共同培养系统使改性的有效生产和评估成为可能.
- 该平台可快速选工程的抗菌活性,加速新型抗生素的发现.
- 该方法对未来的研究和工业应用在抗微生物开发方面具有重大潜力.
相关概念视频
Antibiotic Selection
Overview
Microorganisms in Medicine and Therapeutics
Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
Biological Methods for Microbial Control
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
Probiotics
Probiotics are live, non-pathogenic microorganisms that confer health benefits by modulating the gut microbiota. The human gastrointestinal tract harbors a complex microbial ecosystem, and the balance of this microbiota is crucial for digestive and systemic health. Among the most extensively studied and utilized probiotics are species formerly classified within the genera Lactobacillus and Bifidobacterium. These organisms not only naturally colonize the human gut but are also consumed through...
Development of Human Microbiota
The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
Microbiota Modulation by Antibiotics
Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...


