为了协同光动力学热致死和免疫疗法而设计的酸调节性脂质体纳米纤维
Xiangmei Chen1, Mengjie Ye1, Yujie Wen1
1Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Materials and Energy, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China.
Acta biomaterialia
|January 30, 2026
概括
这项研究开发了一种新型的脂质体纳米纤维 (L-P-Cn-U),它结合了光动力学疗法和代谢调节,通过触发热和将冷瘤转化为热瘤来增强癌症免疫疗法.
科学领域:
- 生物材料科学 生物材料科学
- 癌症免疫疗法癌症免疫疗法
- 纳米医学是一种纳米医学.
背景情况:
- 加斯德林介导的热致死对癌症免疫疗法有希望,但受到免疫抑制性瘤微环境的限制.
- 在寒冷的瘤中,低效活化激素会阻碍有效的抗瘤免疫反应.
研究的目的:
- 开发一种酸调节生物模拟脂质体纳米微粒 (L-P-Cn-U),用于同时提供一种光敏化前药物 (P-Cn) 和一种碳酸酶IX (CAIX) 抑制剂 (U-104).
- 增强热和免疫细胞死亡,以改善癌症免疫治疗.
主要方法:
- 在L-P-Cn-U系统中选P-Cn前药物,以确定最佳候选药物.
- 使用细胞和小鼠模型来评估L-P-Cn-U在将冷瘤转化为热瘤中的有效性.
- 研究U-104释放,细胞内酸度调节和下游信号的机械路径.
主要成果:
- 确定L-P-C16-U作为具有卓越的合稳定性和ROS生成效率的最佳结构.
- 证明L-P-Cn-U调解热和免疫细胞死亡,将冷瘤转化为热瘤.
- 表明酸触发的U-104释放会增加细胞内酸度,减弱PI3K-Akt/mTOR信号,增强ROS产生,并建立CAIX表达的负反循环.
结论:
- 该L-P-Cn-U系统有效地协同光动力疗法和免疫疗法.
- 这种组合策略将聚焦于热的治疗与代谢调节相结合,以增强抗瘤免疫力.
- 提供了一个广泛适用的概念,通过新的脂质体工程来增强癌症免疫疗法.
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