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一个聚合物纳米海绵作为一种广泛的反应性氧物种清理器,用于急性损伤治疗
Shan He1, Chaoran Chen2,3, Fangzheng Li2,3
1School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, P. R. China.
Nano letters
|September 19, 2023
概括
新的纳米材料有效地清理反应性氧物种 (ROS),以治疗急性损伤 (AKI). 这些S-PPENP积聚在受损脏中,减少炎症和细胞损伤,以改善AKI治疗.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 腎臟病學 (nephrology) 是一種醫學專業.
背景情况:
- 急性损伤 (AKI) 与过度的活性氧物种 (ROS) 生产有关,导致器官损伤.
- 目前的AKI治疗主要是支持性,缺乏针对ROS的有针对性的干预措施.
- 开发新型治疗剂来对抗AKI中的ROS至关重要.
研究的目的:
- 开发和评估用于AKI中的ROS清理的新型超分支聚聚 (PPE) 纳米材料.
- 研究含乙烯的个人防护品纳米颗粒 (S-PPE NP) 在缓解 AKI 的有效性.
- 评估S-PPE NP在AKI小鼠模型中的治疗潜力.
主要方法:
- 合成高分支聚聚聚纳米材料与铁 (S-PPE NP) 和铁 (TK-PPE NP) 键.
- 在体外评估S-PPE NP对各种ROS物种 (H2O2, •OH, •O2−) 的ROS清除能力.
- 在体内评估S-PPE NP在受伤脏中的积累以及AKI小鼠模型中的治疗效果.
主要成果:
- 在S-PPE NP中,通过铁氧化证明了广泛的ROS吸收和清除.
- S-PPE NP有效地降低了细胞内ROS水平,并预防了细胞损伤.
- 在AKI小鼠受伤脏中积累了S-PPE NP,并显著改善了治疗结果.
- 用S-PPENP治疗降低了ROS和炎症信号通路的调节,减少了亡.
结论:
- 含有thioether的多聚纳米颗粒 (S-PPE NP) 是有效的宽频ROS清理器.
- 通过减轻氧化应激和炎症,S-PPE NP在治疗急性损伤方面具有显著的治疗潜力.
- 这种新的纳米材料为AKI治疗提供了一个有前途的策略,超出了目前的支持性护理.
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