益生菌大肠杆菌中的热放大器电路用于严格控制温度的新型抗生素释放
Sourik Dey1, Carsten E Seyfert2,3,4, Claudia Fink-Straube1
1INM - Leibniz Institute for New Materials, Campus D2 2, 66123, Saarbrücken, Germany.
Journal of biological engineering
|November 13, 2024
概括
工程细菌现在可以使用一种新的热放大器电路生产像达罗巴克丁这样的抗生素. 这个系统精确地控制了用于增强治疗应用的生产.
科学领域:
- 生物制药开发 生物制药开发
- 合成生物学 合成生物学
- 微生物治疗学 微生物治疗学
背景情况:
- 类药物面临的生产和稳定性挑战阻碍了临床转化.
- 工程细菌疗法为现场药物生产和输送提供了一种新的方法.
- 使用遗传开关控制细菌的治疗性生产是复杂的,特别是在改性或有毒上.
研究的目的:
- 克服控制工程细菌中转化后改性抗生素生产的局限性.
- 开发一个强大的遗传电路,以精确,实时控制大肠杆菌中治疗性的生产.
- 为了使得使用益生菌大肠杆菌宿主进行控制的抗生素达罗巴克丁的生产.
主要方法:
- 开发一个热放大器电路,将热开关与正交T7RNA聚合酶结合起来.
- 利用益生菌大肠杆菌作为生产抗生素达罗巴克的宿主.
- 在不同温度和模拟肠道条件下测试电路性能 (胆盐,低营养).
主要成果:
- 热放大器电路使病原体抑制剂达罗巴克丁在40°C的温度下产生,在37°C的温度下泄漏率最小 (<检测极限).
- 持续的基因表达允许仅在热诱导2小时后,达罗巴克生产达到治疗水平.
- 即使在模拟的肠道环境中也观察到一致的性能,表明生理相关性.
结论:
- 开发的热放大器电路有效地克服了在工程细菌中生产改性抗生素的挑战.
- 该系统为治疗性的生产提供了精确的时间控制,增强了细菌治疗的潜力.
- 工程化的大肠杆菌系统在具有挑战性的生理条件下显示出在体内,特定地点生产类抗生素的前景.
更多相关视频
10:50Design and Use of a Low Cost, Automated Morbidostat for Adaptive Evolution of Bacteria Under Antibiotic Drug Selection
Published on: September 27, 2016
9.7K
11:13Design and Implementation of an Automated Illuminating, Culturing, and Sampling System for Microbial Optogenetic Applications
Published on: February 19, 2017
9.7K
相关概念视频
Factors Influencing Microbial Growth: Temperature
1
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
1
Antibiotic Selection
52.3K
Overview
52.3K
Physical Methods for Controlling Microbial Growth: Temperature
1
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
1
Diversity of Archaea I
2
Archaea, a domain of single-celled microorganisms, are classified into five major phyla based on genetic and biochemical characteristics: Euryarchaeota, Crenarchaeota, Thaumarchaeota, Korarchaeota, and Nanoarchaeota. Among these, the phylum Euryarchaeota is notable for its remarkable diversity in morphology, metabolism, and ecological adaptations.Morphological and Metabolic DiversityMembers of Euryarchaeota exhibit a variety of cellular shapes, including rods and cocci. Their metabolic pathways...
2
