诺坎塔里丁载入的脂质体通过重编程瘤血管以实现正常化来强化放射治疗
Jingming Luo1, Yanni Shan2, Xudong Fan3
1School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China; Hangzhou Red Cross Hospital (Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine), Hangzhou, Zhejiang, China.
Biochemical and biophysical research communications
|June 17, 2025
概括
这项研究开发了norcantharidin-loaded脂质体 (NCTD-LPs) 来延长瘤血管正常化,增强放射治疗的疗效. 结合的NCTD-LPs和放射治疗显著改善了小鼠的瘤抑制率.
科学领域:
- 在瘤学瘤学.
- 纳米医学是一种纳米医学.
- 辐射疗法 辐射疗法
背景情况:
- 抗血管性药物旨在通过阻断新血管化来抑制瘤生长.
- 低剂量的抗血管性药物可以暂时使瘤血管正常化,但由于快速清除,其持续效果有限.
- 瘤缺氧和异常血管系统降低了放射治疗的疗效.
研究的目的:
- 开发诺坎塔里丁载荷脂质体 (NCTD-LPs) 以维持瘤血管正常化.
- 通过利用血管正常化窗口来提高放射治疗的疗效.
- 为了研究NCTD-LP与放射治疗结合的治疗协同作用.
主要方法:
- 合成了NCTD-LP,并对其物理化学性质进行了表征.
- 使用CD31,α-SMA和HIF-1α等标记物,对携带瘤的小鼠进行治疗,以确定最佳的血管正常化窗口.
- 在确定窗口期间进行放射治疗,并比较治疗结果.
主要成果:
- NCTD-LP显示了适合药物输送的特性 (尺寸:140.94nm,泽塔电位:29.54mV).
- 治疗后的第10天被确定为血管正常化的最佳窗口.
- 结合NCTD-LPs和辐射,实现了43.60%的瘤抑制率,明显高于单一疗法.
结论:
- NCTD-LPs有效地稳定瘤新血管,减少缺氧,并改善氧气 perfusion.
- 这种由脂酶激活的血管正常化策略增强了放射治疗的敏感性和结果.
- 这些发现为组合性瘤治疗提供了一个可翻译的范式.
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