开发第二代阿米诺甲基表观素,以克服Mycobacterium的本地排泄
Gregory A Phelps1,2, Martin N Cheramie1, Dinesh M Fernando1
1Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105.
概括
新的斯培胺衍生物,N-乙烯链接的氨基甲基SPCs (eAmSPCs),显示出对Mycobacterium abscessus显著增强的功效. 这些化合物通过逃避排泄机制来克服耐药性,为NTM感染提供了潜在的新疗法.
科学领域:
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
- 结构生物学 结构生物学
背景情况:
- * *Mycobacterium abscessus* (Mab) 是一种新兴的非结核菌 (NTM) 病原体,以其高固有的抗药性而闻名.
- *目前对Mab感染的治疗结果不佳,这凸显了对新型治疗策略的迫切需要.
研究的目的:
- * 开发新型,强效的抗菌菌剂,有效对抗耐药M..
- * 为了研究修改后的谱能菌素衍生物的作用机制和结构-活性关系.
主要方法:
- * 合成修改光谱素 (SPC) 以产生与N-乙烯相关的氨基甲基SPC (eAmSPC).
- *对 *M. abscessus* 和相关菌株进行抗微生物敏感性测试.
- * 作用研究的机制,包括结晶学和流量测定.
- * 在小鼠感染模型中进行体内疗效评估.
主要成果:
- *与N-乙烯相关的氨基甲基SPCs (eAmSPCs) 与母SPC相比,对M.的功效提高了64倍.
- *eAmSPCs通过增加细胞内积累来实现增强的活性,主要是通过规避TetV介导的流量.
- *化合物2593在小鼠模型中显示出显著的疗效和有利的药理动力学,并与其他抗Mab剂协同作用.
结论:
- *eAmSPCs代表了一种有前途的抗生素的新结构子类,具有对M.的强大活性.
- * N-乙烯结合对于克服TetV介导的流量至关重要,增强药物积累和有效性.
- *eAmSPC有潜力发展成为有效治疗M.和其他NTM感染的方法.
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