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作为黑色素瘤免疫治疗癌症疫苗平台的树突细胞衍生生物模拟囊泡

Jun Liu¹, Jiaye Lu¹, Fengze Miao¹

¹Shanghai Skin Disease Hospital, School of Medicine, Tongji University, 1278 Baode Road, Shanghai 200443, China; Shanghai Engineering Research Center of Topical Chinese Medicine, 1278 Baode Road, Shanghai 200443, China.

Journal of controlled release : official journal of the Controlled Release Society

|November 16, 2025

概括

一种新的树突细胞 (DC) 衍生的囊泡疫苗g-diDCVac通过激活STING通路来增强抗瘤免疫力. 这种工程制造的纳米疫苗有效地抑制了黑色素瘤的进展,并在临床前模型中改善了生存率.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
纳米技术纳米技术

背景情况:

树突细胞 (DCs) 对于抗瘤免疫是至关重要的,但在瘤微环境 (TME) 中经常被抑制.
增强DC功能是有效的癌症免疫治疗的关键策略.
工程纳米疫苗为克服TME诱导的免疫逃避提供了一个有希望的方法.

研究的目的:

开发和评估一种新的生物模拟树突细胞 (DC) 衍生囊泡疫苗 (g-diDCVac) 用于癌症免疫治疗.
研究g-diDCVac的作用机制,包括STING通路激活和免疫细胞反应.
在临床前黑色素瘤模型中评估g-diDCVac的治疗疗效.

主要方法:

通过将一个STING激动剂 (diABZI) 和瘤抗原 (gp100) 整合到DC衍生囊泡中,构建g-diDCVac.
在体外验证BMDC成熟和STING通路激活,使用西欧斑块和ELISA.
转录基因和蛋白质基因分析以确定下游信号通路.
在黑色素瘤模型中的体内疗效研究,以评估抗瘤反应,TME调节和存活率.

主要成果:

在体外,g-diDCVac有效地促进DC成熟和STING通路激活.
通过g-diDCVac激活STING会触发关键的免疫信号级联 (NF-κB,JAK-STAT) 和抗原呈现途径.
g-diDCVac引起强大的抗原特异性T细胞反应,并在体内重塑免疫抑制性TME.
在接受g-diDCVac.治疗的黑色素瘤模型中观察到显著的瘤进展抑制和延长生存期.

结论:

工程化g-diDCVac纳米疫苗显示了癌症免疫疗法的显著治疗潜力.
基于DC细胞外囊泡的纳米疫苗代表了增强抗瘤免疫力的有希望的平台.
为了改进癌症治疗策略,需要进一步开发DC囊泡纳米疫苗.

关键词:

生物模拟囊泡是一种生物模拟囊泡.癌症疫苗疫苗癌症疫苗树突性细胞树突性细胞免疫治疗是一种免疫疗法.黑色素瘤是一种黑色素瘤.

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