双模式GSH耗尽和NIR触发的纳米平台用于级联放大光疗
Shuang Liu1, Xingyu Chen1, Xiaojin Liu2
1School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, PR China; Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, PR China.
Colloids and surfaces. B, Biointerfaces
|January 22, 2026
概括
这项研究开发了一种新的纳米平台,可以耗尽谷 (GSH) 并使用近红外光来结合光动力疗法 (PDT) 和光热疗法 (PTT) 以增强瘤治疗,具有最小的毒性.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 在瘤学瘤学.
背景情况:
- 细胞内谷氨 (GSH) 和低反应性氧物种 (ROS) 的产生阻碍了光疗在瘤中的疗效.
- 开发克服瘤抗氧化防御的策略对于有效的癌症治疗至关重要.
研究的目的:
- 为增强光热疗法 (PTT) 和光动力疗法 (PDT) 构建一个双模纳米平台.
- 创建一个纳米平台,耗尽GSH,并由近红外 (NIR) 光触发,用于协同瘤根除.
主要方法:
- 一个纳米平台 (Ce6@CDP) 被设计成一个硫化铜 (CuS) 核心和一个含有二硫化物键的聚合物 (DS-ANPA-PEG) 封装Ce6.
- 该聚合物与细胞内GSH反应,导致GSH耗尽和氧化应激增加.
- CuS核心促进了NIR触发的PTT,而Ce6使PDT成为可能,从而产生了综合治疗效果.
主要成果:
- 纳米平台有效地耗尽了GSH并产生了ROS,显著提高了PDT的疗效.
- 在808nm激光照射下,CuS核心的高光热转换效率使强大的PTT成为可能.
- 在体外和体外研究证实了显著的瘤生长抑制,可忽略的全身毒性.
结论:
- 开发的纳米平台通过克服瘤抗氧化剂防御,为协同PDT/PTT提供了一个有希望的战略.
- 这种消耗GSH的NIR触发系统为响应式多模式纳米疗法提供了合理的设计.
- 该方法显示了通过结合治疗方式来有效和安全地治疗癌症的潜力.
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