中子捕获通过DNA积累获得的治疗衍生的细胞外囊增强抗瘤树突细胞疫苗的有效性
Linwen Lv1,2, Junzhe Zhang3, Yujiao Wang1
1CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, 19B YuquanLu, Shijingshan District, Beijing, 100049, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|July 18, 2024
概括
子中子捕获疗法增强了辐射瘤细胞衍生的细胞外囊泡 (RT-EVs) 中的DNA积累. 这些增强囊泡 (BEVs) 改善树突细胞 (DC) 功能,从而产生强大的抗瘤免疫力和长期记忆力.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
背景情况:
- 辐射瘤细胞衍生的细胞外囊泡 (RT-EVs) 携带瘤DNA片段和抗原,对免疫反应至关重要.
- 由于降解,RT-EV中的低DNA片段丰度限制了它们的免疫治疗潜力.
- 中子捕获疗法 (BNCT) 是一种新兴的癌症治疗方式.
研究的目的:
- 研究不同类型的辐射对RT-EV中DNA片段含量的影响.
- 评估BNCT诱导的RT-EVs (BEVs) 对树突细胞 (DCs) 的免疫调节作用.
- 评估由BEVs培养的DCs (BEV@BMDCs) 衍生出的DC疫苗的抗瘤疗效.
主要方法:
- RT-EVs来自于用不同类型的辐射治疗的瘤细胞,包括BNCT.
- 分析了RT-EV中的DNA含量和完整性.
- 用BEV化了状细胞,并评估了它们的激活和功能.
- 在瘤模型中,BEV@BMDCs用于疫苗接种,并评估了抗瘤免疫反应.
主要成果:
- 通过诱导DNA断裂和氧化,BNCT显著增加了RT-EV (BEV) 中的DNA积累,增强了对降解的抵抗力.
- BEVs激活了DCs中的DNA传感途径,改善了抗原呈现,迁移和细胞因子分泌.
- 用BEV@BMDCs接种疫苗导致T细胞的显著扩张和瘤透,强大的抗瘤免疫力和长期免疫记忆.
结论:
- 通过增加其DNA有效载荷,BNCT有效地提高了RT-EV的免疫治疗潜力.
- 可以利用BEV教育DC,为癌症免疫治疗创造一种强大的DC疫苗 (BEV@BMDCs).
- 开发的DC疫苗在抑制瘤生长和转移方面表现出显著的有效性,同时建立了长期的抗瘤免疫力.
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