金属结合性环极:与Zn2+和Ga3+离子的合成和复合,用于抗菌应用
Marco Agnes1, Eleni Marina Kasimati1, Mario Inclán2
1Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341, Aghia Paraskevi, Attiki, Greece.
Carbohydrate polymers
|September 22, 2023
概括
新的环氧衍生物有效合金属离子,恢复抗生素对具有高度耐药性的金属β-乳糖酶 (MBL) 生产细菌的有效性. 这提供了对抗抗菌素耐药性 (AMR) 的有希望的策略.
科学领域:
- 药用化学 医学化学
- 抗微生物耐药性 抗微生物耐药性
- 协调化学 协调化学
背景情况:
- 金属β-乳酸酶 (MBLs) 对β-乳酸酶抗生素产生耐药性,导致危及生命的感染.
- MBLs利用Zn2+离子进行水解活性,目前没有批准的药物针对它们.
- 抗菌素耐药性 (AMR) 是一个关键的全球健康挑战.
研究的目的:
- 合成和表征新型的循环德克斯特林衍生物,其功能与胺基乙酸 (IDA) 相结合.
- 评估这些化合物与Zn2+和Ga3+的金属化特性.
- 评估这些化合物对抗MBL介导的抗生素耐药性的潜力.
主要方法:
- 合成各种修饰的循环德克斯特林-IDA合物.
- 化合物的结构,电离状态和金属结合常数的表征.
- 在体外测试化合物,以对产生MBL的细菌对carbapenems重新敏感.
主要成果:
- 新型环极-IDA衍生物与Zn2+和Ga3+形成稳定的复合体.
- 化合物在中性pH下有效合多达4个金属.
- 化合物的50μM度使格拉姆阴性细菌对伊米和美罗重新敏感.
结论:
- 环氧德克斯-IDA结合物显示出作为辅助剂的显著潜力,用于对抗MBL介导的AMR.
- 放射性标记复合物的开发 ([67Ga]Ga-β-IDACYD) 为体内研究提供了一个工具.
- 这些发现为开发针对耐药细菌感染的新治疗策略铺平了道路.
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