用于化压力介导癌症治疗的ROS响应的自燃性聚合物前药物
Anup Dey1, Jeongjin Lee1, Minsung Park2
1School of Chemical Engineering, College of Engineering, Sungkyunkwan University (SKKU), Seobu-ro 2066, Jangan-gu, Suwon 16419, Republic of Korea.
概括
这项研究引入了一种新型聚合物前药物,该前药物释放氧化 (NO) 并在瘤中清除谷氨. 这种有针对性的方法显示出强大的抗癌作用和最小的毒性,提供了一种新的氧化还原反应疗法.
科学领域:
- 生物医学工程 生物医学工程
- 癌症治疗方法 癌症治疗方法
- 药物输送系统 药物输送系统
背景情况:
- 氧化 (NO) 是癌症治疗的有前途的氧化还原调节剂.
- 传统的NO供体面临由于短半衰期和瘤特异性差的局限性.
- 反应性氧物种 (ROS) 在瘤微环境中增加,呈现出治疗点.
研究的目的:
- 开发一种ROS响应的,自我燃烧的聚合物原药 (G-g-PSIP) 用于向癌症治疗.
- 调查前药物的作用机制,包括NO释放,谷氨清除和ROS反应.
- 评估G-g-PSIP的抗瘤疗效和安全性在体外和体内.
主要方法:
- 合成和G-g-PSIP聚合原药的表征.
- 在体外细胞毒性测定中使用CT26癌细胞和L929正常细胞.
- 评估细胞内谷氨耗尽,NO生成和过氧酸盐的形成.
- 在CT26瘤携带小鼠体内抗瘤疗效研究.
主要成果:
- G-g-PSIP对CT26癌细胞具有剂量依赖的细胞毒性,对正常细胞的毒性最小.
- 这种前药物有效地清除了谷氨,并产生了NO作为对ROS升高的反应.
- 级联增强的脱聚合导致过氧酸的积累,诱导了化应激和类似铁亡的细胞死亡.
- 在体内,通过对G-g-PSIP进行全身治疗,可以实现显著的抗瘤疗效.
结论:
- G-g-PSIP是一种强大的ROS响应的聚合原药,用于向癌症治疗.
- 由于GSH耗尽和NO/氧化生成的协同效应,诱导了类似于铁亡的细胞死亡.
- 这种氧化还原反应平台对开发新型癌症治疗有前途.
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