下一代里法米辛用于治疗菌根菌感染
Véronique Dartois1,2, Tian Lan3, Uday S Ganapathy1,2
1Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ 07110.
概括
经过化学改造的里法布丁显示出对Mycobacterium abscessus肺部感染的增强效力. 这些新型利法素克服了药物失活,并减少了有害的药物相互作用,提供了一个有前途的新治疗策略.
科学领域:
- 药用化学 医学化学
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- * * Mycobacterium abscessus * 导致严重的肺部感染,特别是在免疫力低下的患者和患有囊性纤维化 (CF) 患者中.
- *目前用于结核病的利法治疗对M.的疗效较低,原因是细菌内无活化和P450 3A4 (CYP3A4) 细胞染色体的诱导,导致药物相互作用.
- * CYP3A4诱导限制了在患有CF和HIV联合感染等并发症的患者中使用利法素,这些患者需要使用CYP3A4基质药物.
研究的目的:
- * 通过化学改造Rifabutin,以提高其对M.的疗效.
- * 阻止里法胺素的细菌内无活化.
- *通过防止CYP3A4诱导来消除药物相互作用.
主要方法:
- * 设计和合成C25替代的利法布丁衍生物.
- *对衍生品进行剖析,以检测它们对细胞内无活化和缺乏CYP3A4诱导的耐药性.
- * 对 *M. abscessus* 临床分离物的抗菌活性评估,包括复制和非复制细菌以及细胞内细菌.
- * 在小鼠模型中评估药理性质和疗效的M. abscessus*肺部感染.
主要成果:
- *产生了新型C25替代的里法布丁衍生物,对细胞内无活化具有抗性,并且没有诱导CYP3A4.
- * 前沿化合物与里法布丁对抗*Mycobacterium结核病*具有同等效力.
- *优先组合物对 *M. abscessus* 临床分离物有增强的活性,对复制,非复制和细胞内细菌有杀菌作用.
- *在小鼠模型中,这些新型利法素作为单一药物与标准的四种药物联合治疗一样有效.
结论:
- * 经过化学改造的利法素显示出更强的效能,并减少了对M.的药物相互作用负担.
- * 这些化合物代表了治疗严重的M.瘤肺部感染的有前途的治疗进展.
- * 开发的利法布丁衍生物提供了潜在的更安全和更有效的治疗选择,特别是对于患有并发症的患者.
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