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生物模拟金纳米调节器用于通过气态微环境改造战略的深层瘤NIR-II光热免疫疗法

Honglin Huang¹, Zhengxin Xie¹, Ningxi Li¹

¹Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, and School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610041, P. R. China.

Journal of nanobiotechnology

|March 19, 2025

概括

这项研究引入了一种新的仿生金纳米调节器,用于有效的光热免疫疗法. 纳米调节器重新编程瘤微环境,显著抑制固体瘤生长,增强抗瘤免疫力.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
免疫治疗是一种免疫疗法.

背景情况:

固体瘤免疫疗法面临来自免疫抑制瘤微环境 (TIME) 的挑战.
缺氧和免疫抑制是敌对时代的关键特征.
开发克服时间的策略对于有效的癌症治疗至关重要.

研究的目的:

开发一个多功能仿生金纳米调节器,用于增强光热免疫疗法.
为了实现高效的瘤向,深入透,血管正常化和免疫重编程.
克服目前针对固体瘤的免疫治疗方法的局限性.

主要方法:

一个多功能生物模拟金纳米调节器 (GNR-SNO@MMT) 是使用金纳米棒 (GNR),S-nitrosothiol (SNO) 捐赠者和巨细胞膜 (MM) 伪装设计的.
该纳米调节器是为第二次近红外 (NIR-II) 光热免疫疗法而设计的.
该系统利用tLyp-1来增强瘤透和向.

主要成果:

经过工程设计的GNR-SNO@MMT证明了瘤透和炎症热带的增强.
用GNR-SNO@MMT进行NIR-II激光照射导致了显著的瘤切除.
过热诱导的氧化 (NO) 释放通过降低PD-L1,再极化巨细胞和振兴T细胞重新编程了TIME.
在4T1小鼠模型中实现了94.7%的瘤抑制率,CD8+T细胞透率增加了2.4倍.

结论:

设计的GNR-SNO@MMT为深层固体瘤提供了一种新且有效的光免疫疗法策略.
这种方法通过NO参与的纳米医学和NIR-II激光辅助重新配置瘤免疫微环境.
仿生纳米调节器显示出克服固体瘤治疗挑战的希望.

关键词:

气体免疫调节器是一种气体免疫调节器.缓解免疫抑制的缓解巨细胞膜仿生系统在NIR-II光热疗法中使用光热疗法.

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