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一个NIR-II免疫刺激纳米平台重新连接免疫代谢,释放STING驱动的抗瘤免疫力

Xun Yang¹, Xuefeng Chen¹, Minhao Chen¹

¹Skin Structure and Function Key Laboratory of Luzhou, Department of Dermatology, The Affiliated Hospital, Southwest Medical University, Sichuan Province, 646000, Luzhou, China.

Journal of nanobiotechnology

|March 16, 2026

概括

一个新的纳米平台结合了光热疗法和STING通路激活来治疗晚期黑色素瘤. 这种方法增强了抗瘤免疫力,导致显著的瘤抑制和持久的全身反应.

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:

黑色素瘤是一种具有有限治疗选择的侵袭性癌症.
光热疗法 (PTT) 与STING通路激活相结合,有望增强抗瘤免疫力.
在单个纳米平台中将深层组织成像与受控免疫刺激相结合,对于先进的黑色素瘤治疗具有挑战性.

研究的目的:

开发一种针对线粒体的纳米激素剂,用于晚期黑色素瘤.
将NIR-II光成像和光热转换与时空控制的STING通路激活相结合.
评估PTT和STING激活对全身抗瘤免疫的协同效应.

主要方法:

通过联合组装一个STING激动剂 (MSA-2) 和一个NIR-II光体 (IR-817),构建了一个纳米激动剂 (IRM).
利用808nm激光照射诱导局部高温症并触发热和免疫细胞死亡 (ICD).
评估了树突细胞 (DC) 中的STING通路激活和由此产生的全身细胞毒性T细胞响应在黑色素瘤模型中,包括STING敲击小鼠.

主要成果:

IRM纳米平台实现了同时进行NIR-II成像和高效的光热转换.
激光雷射诱导局部高温症,热和ICD,促进MSA-2释放和STING激活.
这种协同方法重新编程了瘤微环境,引起了强大的T细胞反应,抑制了遥远的瘤 (abscopal效应),并证明了STING的依赖性.

结论:

该IRM纳米平台成功地将多模式成像与免疫代谢调制结合起来,获得持久的全身抗瘤免疫力.
这一策略为针对晚期黑色素瘤的组合光免疫疗法提供了一种可翻译的方法.
这项研究强调了PTT和STING激活在诱导全身抗瘤免疫力方面的关键协同作用.

关键词:

免疫代谢重编程是什么在NIR-II成像系统中使用.光热疗法是一种光热疗法.热灭菌的发生.刺的路径刺的路径

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