串联的宿主-宿主-受体识别准确地引导西普洛克萨消除细胞内黄金葡萄球菌
Wenjun Zhan1, Lingling Xu1, Zhiyu Liu1
1State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, 210096, Nanjing, China.
Angewandte Chemie (International ed. in English)
|June 22, 2023
概括
一个新的药物输送系统精确地准细胞内黄金葡萄球菌 (S. aureus) 感染. 这种超分子平台通过引导西普洛素消除宿主细胞内的细菌来提高抗生素疗效,从而改善治疗结果.
科学领域:
- 超分子化学 超分子化学
- 药物输送系统 药物输送系统
- 传染性疾病 传染性疾病
背景情况:
- 黄金葡萄球菌 (S. aureus) 感染是危及生命的,原因是宿主防御和抗生素的细胞内逃避.
- 目前的细胞内抗生素输送方法不足以有效清除金黄色细菌.
- 向细胞内病原体提供有针对性的抗生素对于提高治疗疗效至关重要.
研究的目的:
- 开发一种新型的超分子策略,用于精确的细胞内输送西普洛素,以对抗黄金色杆菌.
- 设计一种能够进行序列分子识别事件的药物前体,用于有针对性的输送和激活.
- 评估开发的系统在消除细胞内黄金色杆菌和缓解感染相关炎症方面的有效性.
主要方法:
- 合理设计一种含有阿达曼坦的前体 (Cip-CBT-Ada),用于输送西普洛素.
- 用β-cyclodextrin-heptamannoside (CD-M) 衍生物来装饰前体,以准曼诺酶受体.
- 在体外和体内研究中使用S. aureus感染的细胞系 (RAW264.7) 和小鼠模型来评估细菌清除和炎症.
主要成果:
- 合成的Cip-CBT-Ada/CD-M结合物成功地准了曼诺酶受体过度表达的巨细胞.
- 宿主细胞内的Caspase-1启动的点击化学触发了自组装到西普罗素纳米颗粒 (纳米芯片) 中.
- 与单独的自由普洛素或前体相比,Cip-CBT-Ada/CD-M表现出明显优异的细胞内黄金色杆菌消除和炎症减少.
结论:
- 一个超分子平台利用串联的客宿主和配体受体识别,可以实现精确的细胞内抗生素输送.
- 这一策略有效地向并消除细胞内黄金色杆菌,为治疗持久性细菌感染提供了有前途的方法.
- 开发的系统增强了抗生素的有效性,减少了炎症,突出了其在对抗具有挑战性的细胞内病原体方面的潜力.
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