铜过氧化物纳米点的合成用于自供化学动力疗法
Li-Sen Lin1, Tao Huang2, Jibin Song3
1Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States.
Journal of the American Chemical Society
|June 15, 2019
概括
研究人员开发了一种用于化学动力学治疗 (CDT) 的新型纳米材料 - - 过氧化铜 (CP) 纳米点. 这些纳米点自行提供过氧化 (H2O2),通过基生成增强癌细胞杀死.
科学领域:
- 生物材料科学
- 纳米技术
- 癌症治疗
背景情况:
- 化学动力疗法 (CDT) 使用芬顿催化剂从过氧化 (H2O2) 中产生基 (•OH),用于癌症治疗.
- 缺少内源H2O2限制了CDT的有效性,需要能够自供H2O2的药物.
研究的目的:
- 开发一种新的芬顿型金属过氧化物纳米材料,用于增强CDT.
- 设计一种能够自供H2O2的纳米材料, 以提高抗癌效果.
主要方法:
- 通过H2O2到Cu2+的协调制造过氧化铜 (CP) 纳米点.
- 使用酸性瘤微环境进行CP纳米点解离和随后的芬顿类反应.
- 研究OH诱导的溶酶体膜透和细胞死亡途径.
主要成果:
- CP纳米点显示了pH依赖的H2O2和OH生成.
- CP纳米点的内细胞和溶酶解离导致了向的OH产生.
- 由于瘤的积累,CP纳米点在体内有效地抑制了瘤的生长,并产生了最小的副作用.
结论:
- CP纳米点是第一个芬顿型金属过氧化物纳米材料.
- 这项研究提出了一种通过自供H2O2增强CDT疗效的新策略.
- CP纳米点为向癌症治疗提供了有前途的方法,具有更好的安全性.
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