在轻度低氧时激活的以为基础的光敏剂的开发
Wen Piao1, Kenjiro Hanaoka1, Tomotsumi Fujisawa2
1Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Journal of the American Chemical Society
|September 6, 2017
概括
这项研究引入了一种通过低氧激活的新型光敏剂,用于使用光动力学疗法 (PDT) 进行向癌细胞切除. 在低氧瘤环境中,基于基的设计可以选择性地产生单片氧 (1O2),从而最大限度地减少对健康组织的损伤.
科学领域:
- 生物化学
- 摄影化学
- 癌症学
背景情况:
- 光动力疗法 (PDT) 使用光敏剂和光产生单片氧 (1O2) 用于癌细胞的破坏.
- 减少健康组织的损伤在PDT中至关重要.
- 可激活光敏感剂提供了有针对性的1O2生成策略.
研究的目的:
- 开发一种在低氧条件下选择性激活的新型光敏感剂,以提高PDT的疗效.
- 研究一种以基为基础的策略,用于控制光敏剂中的O2生成.
主要方法:
- 设计和合成含有亚部分的色素染料.
- 在低氧条件下评估光敏剂的激活机制.
- 在不同氧度下使用PDT对选择性癌细胞切除进行体外评估.
主要成果:
- 在正常条件下,光敏剂中的基阻碍了O2生成.
- 在低氧状态下减少基的分裂使O2的产生成为可能.
- 在试验室中实现了低毒性癌细胞的选择性切除,对正常性细胞的影响最小.
结论:
- 一种新的低氧激活光敏剂成功地使用了以基为基础的策略.
- 这种方法可以通过利用瘤特异性的低毒环境在固体瘤中进行向的PDT.
- 基于的设计是一个多功能平台,用于创建可激活的光敏剂.
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