评估细胞内位置和ROS扫描二氧化物纳米颗粒在冠状细胞的评估
Jessica Aldrich1, Gengfu Dong2, Arjun Panicker1
1J. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, 1275 Center Dr., Gainesville, Florida 32611, United States.
ACS applied materials & interfaces
|December 19, 2025
概括
二氧化纳米颗粒 (MnO2) 能够有效地在体细胞内清除反应性氧物种 (ROS),将其局部化到线粒体,而不会损害细胞呼吸. 这为缓解氧化应激提供了一个有希望的关节炎治疗策略.
科学领域:
- 生物医学工程 生物医学工程
- 纳米医学是一种纳米医学.
- 细胞生物学 细胞生物学
背景情况:
- 骨关节炎 (OA) 的特点是由于反应性氧物种 (ROS) 不平衡而导致的氧化应激.
- 传统的抗氧化剂在OA治疗的稳定性和生物可用性方面存在局限性.
- 工程化二氧化纳米颗粒 (MnO2) 显示了ROS清理和chondroprotection的潜力.
研究的目的:
- 为了研究体细胞中MnO2纳米颗粒的细胞吸收机制.
- 为了确定MnO2在体细胞内的亚细胞命运和ROS清理活性.
- 评估MnO2对体细胞中线粒体功能的影响.
主要方法:
- 通过温度依赖性和内细胞路径抑制在牛体中评估的MnO2吸收.
- 使用非细胞和细胞系统评估MnO2 ROS清理.
- 使用HyPer7遗传编码探针测量线粒体和细胞质中的H2O2水平.
主要成果:
- MnO2表现出类似酶的效果,减少了红细胞中的氧化应激.
- 二氧化通过能量依赖和独立的途径进入胆细胞.
- 局部化到线粒体的MnO2,在线粒体矩阵,膜间空间和细胞质中吸收H2O2,而不会影响呼吸.
结论:
- MnO2纳米粒子有效地清理细胞内ROS,特别是在线粒体内.
- 这项研究提供了有关MnO2吸收,局部化和体细胞功能的机制性见解.
- MnO2代表了一种有前途的治疗策略,用于减轻骨关节炎中的氧化应激.
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