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脂质纳米颗粒配制的DNA通过干扰素信号通路作为癌症免疫疗法的强有力的免疫调节器

Chen-Yi Chiang¹, Ming-Shu Hsieh¹, Mei-Yu Chen¹

¹National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli, Taiwan.

|December 22, 2025

概括

携带等离子体DNA (pDNA) 的脂质纳米粒子 (LNP) 显示稳定性,并有效地传递用于癌症免疫治疗的基因. 这种LNP/pDNA方法激活干扰素依赖的通路,吸引免疫细胞抑制瘤生长.

科学领域:

免疫学免疫学免疫学
纳米技术纳米技术
在瘤学瘤学.

背景情况:

通过脂质纳米颗粒 (LNP) 传递的等离子DNA (pDNA) 是一个有前途的癌症免疫治疗策略.
液态核蛋白提供核酸稳定性和高效的细胞内传递.
了解LNP/pDNA稳定性和免疫治疗机制至关重要.

研究的目的:

评估LNP/pDNA配方的稳定性和免疫治疗潜力.
定义LNP/pDNA抗瘤活性背后的机制.
评估特定信号通路和免疫细胞的作用.

主要方法:

使用微流体制备的LNP/pDNA复合体.
物理化学稳定性通过封装效率,颗粒大小和转染能力来评估.
在小鼠模型中测试了体内抗瘤疗效;机械学研究涉及细胞因子分析,转录组学,免疫细胞枯竭和淘汰模式 (TLR9,干扰素信号).

主要成果:

LNP/pDNA配方表现出优异的存储稳定性和基因传递效率.
内和肌内给药都抑制了瘤的生长,局部输送更有效.
LNP/pDNA激活了细胞质DNA感应通路,诱导了强大的细胞因子产生,并触发了强烈的I/II型干扰素反应.
抗瘤效应由CD8+ T细胞和NK细胞介导,独立于TLR9,但依赖于I型和II型干扰素信号传递.

结论:

通过依赖IFN,独立于TLR9的途径,LNP/pDNA诱导强大的抗瘤免疫力.
该平台用于治疗效果的先天性和适应性免疫反应.
LNP/pDNA代表了开发癌症免疫疗法的稳定有效平台.

关键词:

免疫疗法免疫疗法炎症反应可能是炎症反应.脂质纳米颗粒的使用方法塑体 DNA DNA 的 DNA .瘤微环境中的微环境

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