增强益生菌大肠杆菌 (Escherichia coli) 尼斯尔的抗菌功能:当更少是更多的时候
Emma Bartram1,2, Masanori Asai1,3, Philippe Gabant4
1Section of Molecular Microbiology, Imperial College London , London, United Kingdom.
Applied and environmental microbiology
|November 6, 2023
概括
工程益生菌细菌,如Escherichia coli Nissle产生微信C (McC) 显示,较低的生产水平提高抗菌有效性,而不会损害细菌的健康. 这一发现对于开发新的益生菌疗法至关重要.
科学领域:
- 微生物学 微生物学
- 合成生物学 合成生物学
- 益生菌研究 益生菌研究
背景情况:
- 益生菌细菌通过抑制有害细菌提供健康益处.
- 细菌素是细菌产生的抗微生物,其生产受到严格监管.
- 工程益生菌过度生产细菌素是一种提高其抗菌性能的策略.
研究的目的:
- 调查失调的细菌素过度生产对益生菌适应性和有效性的影响.
- 评估工程化益生菌Escherichia coli Nissle (EcN) 的抗菌有效性和适应性,该益生菌产生不同量的微素C (McC).
主要方法:
- 通过使用野生型和突变型促进体,设计了益生菌菌株Escherichia coli Nissle (EcN) 来产生微信C (McC).
- 修改后的促销者被设计为允许高,低或野生类型的McC生产水平,同时保持本地监管.
- 在Galleria mellonella感染模型中对输血性大肠杆菌进行了评估,评估了转录基因反应和抗菌疗效.
主要成果:
- 产生最小量的微C (McC) 的ecN细菌表现出最高的抗菌效果.
- 通过工程 EcN 的低水平 McC 生产对细菌健康产生了最小的负面影响.
- 转录组分析揭示了对工程 McC 生产水平的特定反应.
结论:
- 在为治疗应用设计益生菌时,优化细菌素生产水平至关重要.
- 益生菌对抗微生物化合物的低水平,有针对性的生产可以是一个有效的策略.
- 这些发现为改进益生菌与异质基因产品进行改进提供了关键考虑因素,以提高治疗结果.
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