针对瘤向的基于氨酸的金属有机框架用于光动力学和检查点阻塞免疫疗法
Yulong Liu1, Bocheng Zou1, Kang Yang1
1General Surgery Department, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China; Shanxi Medical University, Taiyuan, Shanxi 030001, China.
Colloids and surfaces. B, Biointerfaces
|May 21, 2024
概括
这项研究开发了一种针对性纳米药物 (PCN@HA) 用于增强光动力疗法 (PDT) 治疗癌症. 通过将PDT与免疫疗法相结合,PCN@HA有效地消除瘤并抑制转移.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 光动力疗法 (PDT) 显示出对非侵入性癌症治疗的希望,但与瘤转移和复发作斗争.
- 需要有针对性的药物输送系统来提高PDT的疗效.
研究的目的:
- 构建一个用氨酸 (HA) 修改的纳米药物 (PCN@HA) 用于增强的,针对性的光动力学疗法 (PDT) 对抗瘤.
- 评估PCN@HA介导PDT的多式成像能力和治疗效果.
- 评估PCN@HA-PDT与抗PD-L1检查点阻塞的组合,以对瘤进行协同抑制.
主要方法:
- 合成和PCN@HA纳米医学的表征.
- 通过HA对CD44受体向的体外和体内评估.
- 在光照照射下评估单片氧 (1O2) 生产和杀死癌细胞.
- 多模式光 (FL) /光声学 (PA) 成像用于治疗指导.
- 免疫性细胞死亡 (ICD) 诱导和适应性免疫反应的调查.
- 结合疗法与瘤模型中的抗PD-L1检查点阻塞.
主要成果:
- 由于HA的修饰,PCN@HA证明了瘤向的增强.
- PCN@HA有效地产生O2诱导癌细胞死亡.
- 多模式FL/PA成像指导了癌症治疗.
- 通过PCN@HA介导的PDT诱导了ICD并刺激了抗瘤免疫反应.
- 组合疗法显著抑制了原发性和转移性瘤的生长.
结论:
- PCN@HA是一种有前途的纳米药物,用于有针对性的PDT,具有多式成像能力.
- 通过诱导ICD和免疫刺激,PCN@HA介导的PDT可以克服传统PDT的局限性.
- 将PCN@HA-PDT与抗PD-L1疗法结合起来,为综合性癌症治疗提供了一个强有力的策略,包括抑制转移.
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