工程高亲和度双重准细胞纳米微粒用于优化癌症免疫治疗
Luyao Zhang1, Xu Zhao2, Yanan Niu2
1Center of Biotherapy, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine Chinese Academy of Medical Sciences, Beijing, China.
Journal of extracellular vesicles
|November 17, 2023
概括
工程纳米纤维显示融合蛋白质,同时阻止CD47和PD-L1免疫检查点. 这种双重向的方法增强了抗瘤免疫力,并显示出癌症治疗的前景.
科学领域:
- 生物材料工程 生物材料工程
- 免疫治疗是一种免疫疗法.
- 纳米技术 纳米技术
背景情况:
- 与单个目标策略相比,双重免疫检查点向提高了抗瘤免疫力.
- 基于抗体的疗法在固体瘤透和结合亲和力方面存在局限性.
研究的目的:
- 设计一种新的纳米纤维 (NV) 系统,用于免疫检查点的双重准.
- 为了克服抗体依赖疗法的局限性,使用基于细胞膜的融合蛋白递送系统.
主要方法:
- 工程化纳米纤维显示SIRPα和PD-1变体 (HAC) 的融合蛋白.
- 评估了SIRPα/CD47和PD-1/PD-L1信号通路的双重阻塞.
- 在体内评估瘤透,结合亲和力,治疗疗效和生物安全性.
主要成果:
- HAC NVs保留了巨细胞化和T细胞抗瘤作用.
- 与单克隆抗体和野生型NV相比,HAC NVs表现出更好的瘤透和结合亲和力.
- 使用HAC NVs对CD47和PD-L1的双重阻断显示出显著的治疗疗效和生物安全性.
结论:
- 开发了一种用于克服瘤免疫逃逸的新生物材料.
- 介绍了一种有效的仿生技术,用于多重准蛋白质的输送.
- HAC NVs为增强癌症免疫疗法提供了一个有希望的策略.
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