基于天然抗菌剂的纳米颗粒用于有效治疗细胞内MRSA感染
Xinshu Zou1, Shuang Cai1, Tingting Wang1
1College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, PR China.
Acta biomaterialia
|August 9, 2023
概括
新的纳米颗粒有效地向并消除细胞内MRSA (甲素耐药黄金葡萄球菌) 感染. 这种方法使用天然化合物杀死细菌,减少毒素损伤,防止耐药性,为难以治疗的感染提供了有希望的治疗方法.
科学领域:
- 纳米医学是一种纳米医学.
- 抗菌疗法是一种抗菌疗法.
- 药物输送系统 药物输送系统
背景情况:
- 细胞内MRSA (甲基耐药黄金葡萄球菌) 由于其对常规抗生素的耐药性,导致感染传播和治疗失败,构成了重大挑战.
- 根除细胞内MRSA的现有策略是有限的,缺乏简单和长期的解决方案.
- 对于新的治疗方法来有效地对抗细胞内MRSA感染并减轻抗生素耐药性的发展,存在着迫切需要.
研究的目的:
- 开发含有格拉布里丁 (GLA) 和甲 (CA) 的pH敏感纳米粒子 (NP),用于向细胞内MRSA根除.
- 研究这些NP在向受感染的巨细胞输送治疗剂和减少MRSA负担方面的有效性.
- 评估这种策略作为增强细胞内MRSA治疗的替代方案的潜力,特别是对于慢性或复发性感染.
主要方法:
- 使用肉甲 (CA) - 德克斯联体作为格拉布里丁 (GLA) 的载体,构建响应pH的纳米粒子.
- 通过德克斯介导的NP向受感染的巨细胞和MRSA在感染部位的积累.
- 溶解体中NP的pH触发不稳定,释放CA和GLA以产生抗菌作用并减少宿主细胞损伤.
主要成果:
- 开发的NP有效地向受感染的巨细胞,并在MRSA感染地点积累.
- 释放的CA降低了细胞毒性毛孔形成毒素的调节,减少了巨细胞损伤和细菌传播.
- GLA 证明了具有较低抗药性发展潜力的细胞内MRSA的快速杀死,从而在具有低宿主毒性的腹膜炎模型中实现了有效的根除.
结论:
- 在pH敏感的NP中,天然抗菌剂GLA和CA的组合为根除细胞内MRSA提供了一个强有力的策略.
- 这种基于纳米粒子的方法对正常组织的毒性很低,并且有望用于重复和长期的临床应用.
- 开发的药物输送系统代表了一个有吸引力的替代方案,以促进具有挑战性的细胞内MRSA感染的临床治疗.
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