通过吸入RNA进行增强肺癌免疫疗法的调节瘤原纤维对齐
Bin Hu1,2, William Stewart3, Qijing Chen1,2
1Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai, China.
Nature communications
|August 30, 2025
概括
这项研究引入了使用脂质纳米颗粒 (LNP) 的可吸入疗法,以直接向肺癌提供治疗. 这种新的方法通过修改瘤微环境 (TME) 和改善T细胞活性来提高免疫疗法的有效性.
科学领域:
- 生物技术
- 癌症学
- 免疫学
背景情况:
- 肺癌免疫疗法受到瘤微环境 (TME) 和药物输送不足的限制.
- 这种TME常常会阻止免疫细胞到达瘤并抑制它们的活动.
研究的目的:
- 开发一种可吸入的脂质纳米粒子 (LNP) 系统,同时向肺癌提供抗DDR1mRNA和抗PD-L1siRNA.
- 克服TME障碍并提高癌症免疫疗法的有效性.
主要方法:
- 工程LNP提供编码抗迪斯科伊丁域受体1 (DDR1) 单链可变片段 (mscFv) 和针对PD-L1 (siPD-L1) 的siRNA.
- 在小鼠模型中通过吸入给肺癌细胞使用LNP系统.
- 评估了对原结构,瘤硬度,T细胞透和瘤进展的影响.
主要成果:
- mscFv@LNP系统成功地重组了原纤维,并降低了瘤的硬度.
- 吸入mscFv/ siPD- L1@ LNP导致了瘤的显著回归,无论是正位肺癌还是转移性肺癌.
- 这种方法改善了治疗小鼠的整体存活率.
结论:
- 可吸入的LNP为肺癌提供了一种有前途的双效免疫疗法.
- 这种方法有效地改变了瘤的微环境,增强了免疫反应,促进了瘤的回归.
- 该策略在固体瘤和其他免疫疗法中具有广泛应用的潜力.
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