由双器官向型I/II AIE光敏感剂诱导的同时发生的铁和热,用于膀癌免疫治疗
Yifan Cheng1,2, Kun Zhou1,2, Yuhang Chen3
1Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China.
Angewandte Chemie (International ed. in English)
|September 19, 2025
概括
这项研究引入了一种新型的光敏感剂 (DY),该光敏感剂向癌细胞,通过活性氧物种 (ROS) 诱导细胞死亡,并破坏脂质平衡,用于强烈的膀癌症治疗.
科学领域:
- 生物医学工程 生物医学工程
- 癌症研究 癌症研究
- 光动力学疗法 光动力学疗法
背景情况:
- 光动力疗法 (PDT) 的疗效依赖于光敏化剂 (PSs) 和它们的ROS生成.
- 由于ROS诱导的铁和热的机制尚未得到充分研究.
- 针对亚细胞局部化是有效PDT的关键.
研究的目的:
- 开发一种用于膀癌的新型聚合诱导排放光敏感剂 (AIE PS).
- 调查细胞内膜网 (ER) 和脂质滴 (LD) 的双器官向.
- 探索ROS介导的脂质平衡的破坏和同步细胞死亡的诱导.
主要方法:
- 合成和描述了一个新的AIE PS,DFTBPPY (DY).
- 评估了DY在瘤细胞 (ER和LD) 中的选择性吸收和亚细胞定位.
- 在激光照射后评估了DY介导的ROS生成,氧化应激,以及诱导铁,热和免疫细胞死亡 (ICD).
主要成果:
- 在膀癌细胞的ER和LD中选择性积累的DY.
- 对DY的激光照射诱导了显著的ROS产生,损害了ER和LD功能.
- DY触发了脂质过氧化级联,导致铁,热和ICD.
- 在膀癌模型中观察到有效的抗瘤作用.
结论:
- DY是一种双有机细胞向的AIE PS,有效地破坏脂质平衡,并诱导并发性细胞死亡.
- 这一策略通过协调多种细胞死亡途径,提高了膀癌的治疗结果.
- 准脂质失衡为膀癌治疗提供了一个有希望的治疗途径.
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