智能银河酶响应性抗微生物:朝着更具生物相容性的膜破坏性剂
Zeyu Shao1, You Dan Xu1, Hao Luo1
1School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
Macromolecular rapid communications
|June 19, 2024
概括
研究人员开发了一种智能抗微生物树,只有在遇到特定酶时才会变得活跃,从而降低毒性. 这种掩盖的前药方法为开发新抗菌剂提供了更安全的策略.
科学领域:
- 药用化学 医学化学
- 生物技术是生物技术.
- 药物发现 药物发现 药物发现
背景情况:
- 抗菌素耐药性 (AMR) 是一个关键的全球健康威胁,需要新的治疗解决方案.
- 抗微生物及其模仿物表现有希望,但由于与宿主细胞的非特异性结合,通常会表现出毒性.
- 开发具有选择性和较少毒性的抗微生物药物仍然是一个重大挑战.
研究的目的:
- 为了合成一个智能抗微生物树突与蒙面的阴离子组 (Gal-Dendron),可以被β-galactosidase激活.
- 评估激活树 (Enz-Dendron) 的抗菌活性和机制.
- 与激活形式相比,评估面罩前药物的毒性概况.
主要方法:
- 一个带有掩盖的阴阳基团的树突的合成 (Gal-Dendron).
- 使用β-银酸酶对树突进行酶性解锁,以形成活性Enz-Dendron.
- 抗微生物活性测试针对格拉姆阴性 (P. aeruginosa,E. coli) 和格拉姆阳性 (S. aureus) 细菌.
- 最低抑制度 (MIC) 的确定.
- 膜透性测定 (内外膜).
- 血液溶解测定和比较毒性研究.
主要成果:
- 激活的恩兹-登德龙对P. aeruginosa,E. coli和S. aureus表现出细菌静止活性,MIC值为96微米.
- 抗微生物机制涉及破坏细菌膜,通过透性分析证明了这一点.
- 蒙面前药物Gal-Dendron的毒性显著降低,与激活的Enz-Dendron相比,血液溶解至少减少2.4倍.
- 响应性即溶性链接剂有效地掩盖了阴离子组,提高了选择性和生物相容性.
结论:
- 智能树突策略成功地掩盖了cationic组,减轻了与抗微生物相关的毒性.
- 由酶触发的激活提供了一种有针对性的方法来提供抗微生物活性,提高安全性.
- 这项研究提供了一个有前途的平台,用于设计生物相容,通过氨基解策略破坏膜的抗菌剂.
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