人类微生物组衍生的抗菌素lugdunin通过前机制自我调节其生物合成
Leonie Reetz1,2,3, Lukas Schulze1,2,3, Thales Kronenberger2,3,4,5
1Department of Infection Biology, Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany.
mBio
|March 18, 2025
概括
斯塔菲洛科克斯 (Staphylococcus lugdunensis) 使用抗菌性卢格杜宁来进行竞争. 两个监管机构,LugR和LugJ,控制着lugdunin的生产和出口,在一个前循环中对该化合物本身作出反应.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 人类微生物组成员产生抗菌素来抑制竞争对手.
- 抗微生物化合物表达需要严格控制,以平衡生物合成成本和收益.
- 斯塔菲洛科克斯 (Staphylococcus lugdunensis) 使用抗菌药物卢格杜宁 (lugdunin) 来对抗金黄色葡萄球菌.
研究的目的:
- 为了研究两个潜在的调节者的角色,LugR和LugJ,在lugdunin生物合成基因集群 (BGC).
- 阐明控制卢格杜宁生物合成和分泌的调节机制.
主要方法:
- 对lugR和lugJ的基因删除研究.
- 对促进区域有约束力的监管机构的分析.
- 评估Lugdunin衍生品对BGC表达的影响.
主要成果:
- 删除lugR或lugJ会增加lugdunin的产生和/或免疫力.
- LugR抑制生物合成操作子,而LugJ抑制出口和免疫基因.
- 这两种调节剂都与促进体区域结合,并且在添加外源性lugdunin时释放出来,这表明了前机制.
结论:
- 卢格杜宁的生物合成和分泌由LugR和LugJ复杂地调节.
- 卢格杜宁通过前机制控制自己的生产和出口,防止徒劳的合成.
- 该法规对于平衡微生物组中抗菌化合物生产的成本和收益至关重要.
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