可拆解的罗纳米颗粒用于编程两阶段癌症免疫疗法
Mei Long1, Yanfeng Zhou1, Daoxia Guo1
1School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
Advanced materials (Deerfield Beach, Fla.)
|May 29, 2024
概括
新型罗纳米颗粒可以提供表观遗传药物和固体瘤的抑制剂,增强抗瘤免疫力,通过向癌细胞和髓质衍生抑制细胞来克服免疫治疗的抵抗力.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 纳米技术纳米技术
- 药物运输 药物运输 药物运输
背景情况:
- 表观遗传药物 (epi-药物) 通过诱导细胞死亡和免疫反应,在癌症治疗中表现有前途.
- 固体瘤的有限成功部分是由于诱导免疫抑制性髓质衍生抑制细胞 (MDSCs).
研究的目的:
- 开发一种向的纳米粒子系统,用于双重输送一种药和一种MDSC抑制剂.
- 为了克服免疫抑制的瘤微环境并增强抗瘤免疫力.
主要方法:
- 开发可分离的罗纳米颗粒 (SIANPs) 用于有针对性的交付.
- 通过DNA回火并触发瘤微环境中的脱离来组装SIANP.
- 同时将药CM-272输送到瘤细胞,并将易布鲁替尼输送到MDSCs.
主要成果:
- SIANPs诱导了瘤细胞中的免疫细胞死亡,并抑制了MDSC免疫抑制.
- 观察到增强的树突细胞成熟和CD8+ T细胞激活.
- 这种方法克服了对免疫检查点阻塞疗法的抵抗力.
结论:
- 可分离纳米粒子为癌症免疫治疗提供了双重向策略.
- 这种方法增强了抗瘤免疫力,克服了对现有疗法的耐药性.
- 为在癌症免疫疗法中使用epi药物铺平了一条新的道路.
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