限制周期性酸抗生素的构造动态,可以改善它们的抗菌活性
Daniel W Carney1, Karl R Schmitz, Jonathan V Truong
1Department of Chemistry, Brown University , 324 Brook Street, Providence, Rhode Island 02912, United States.
Journal of the American Chemical Society
|January 16, 2014
概括
新的循环乙烯基 (ADEP) 抗生素显示出增强的抗菌活性. 通过药物化学稳定它们的构造,改善了ClpP化酶的结合和激活,导致明显更强的细菌杀死.
科学领域:
- 药用化学 医学化学
- 抗菌剂 抗菌剂 抗菌剂
- 分子生物学分子生物学
背景情况:
- 循环乙烯基 (ADEP) 抗生素是一种新型的抗菌药物,其向的是ClpP酶.
- 之前的药物化学工作已经解决了药理上的负担,增强了ADEPs的治疗潜力.
- ADEPs的生物活性构成是通过在黄素核中的跨环结合来稳定.
研究的目的:
- 通过构成约束来研究生物活性ADEP构成的稳定性.
- 评估硬化的ADEP类似物对ClpP化酶结合和激活的影响.
- 为了评估结构受约束的ADEP衍生物的抗菌活性.
主要方法:
- 对ADEP-ClpP复合物的结构分析,以确定稳定相互作用.
- 在ADEP核心中引入构造约束的药物化学修改.
- 交换运动测量以确认生物活性调节器的稳定.
- 在体外测试以确定ClpP结合和激活动态.
- 确定针对相关细菌菌株的抗菌活性.
主要成果:
- 在黄素核心中明智地更换氨基酸稳定了ADEP的构造.
- 在较低度下,符合形态限制的ADEPs显示了对ClpP化酶的增强结合和激活.
- 与天然产品结构相比,化ADEP类似物表现出高达1200倍的抗菌活性.
结论:
- 合理调节形状动态是一种可行的策略,可以增强ADEP等天然产品的生物活性.
- 稳定ADEP的生物活性构成显著提高了它们作为抗菌剂的效力.
- 这种方法有望开发下一代抗生素来对抗细菌感染.
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