手术瘤衍生纳米平台针对与瘤相关的巨细胞进行个性化术后癌症免疫治疗
Gongxi Qiao1, Shenglin Li1, Xumin Pan1
1State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
Science advances
|March 27, 2024
概括
这项研究提出了一种个性化纳米疗法,该疗法重编程免疫抑制性巨细胞以激活CD8+T细胞,有效抑制瘤生长并防止手术后复发.
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:
- 类似M2的瘤相关巨细胞 (TAMs) 通过低效的抗原交叉呈现来阻碍CD8+T细胞的激活,从而阻碍了有效的癌症免疫疗法.
- 抗原呈现细胞 (APC) 直接激活CD8+ T细胞对于瘤的消除至关重要.
研究的目的:
- 开发一个个性化的纳米治疗平台用于术后癌症免疫疗法,通过准M2类TAM.
- 增强CD8+T细胞激活,抑制瘤生长和复发.
主要方法:
- 使用来自手术瘤的癌细胞膜 (CMs) 制造纳米治疗平台,载有囊蛋白酶抑制剂 (E64).
- 用纳米平台准M2类TAM,在溶酶体内释放E64,重塑抗原交叉呈现.
- 用抗PD-L1抗体和免疫检查点阻塞 (ICB) 进行组合治疗,以提高疗效.
主要成果:
- 该纳米平台成功重塑了抗原交叉呈现,并直接激活了CD8+ T细胞,抑制了B16-OVA黑色素瘤生长.
- 与抗PD-L1抗体的联合治疗显著抑制了4T1瘤的生长.
- 个性化纳米疗法与ICB结合,在4T1瘤模型中有效防止术后瘤复发.
结论:
- 开发的个性化纳米治疗平台为癌症免疫治疗提供了强大而安全的策略.
- 这种方法显示出通过增强抗瘤免疫力来预防术后瘤复发的巨大潜力.
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