抗原
免疫系统
交叉展示
细胞免疫
免疫
肿瘤抗原
抗原呈递
获得性免疫系统
化学
免疫学
免疫疗法
生物
T细胞
作者
Qinhua Zuo,Tiantian Li,Linghong Huang,Zonghua Liu,Wei Xue
出处
期刊:Biomaterials Science
[The Royal Society of Chemistry]
日期:2023-01-01
摘要
Tumor vaccine therapy, which can induce tumor antigen-specific cellular immune responses to directly kill tumor cells, is considered to be one of the most promising tumor immunotherapies. How to elicit effective tumor antigen-specific cellular immunity is the key for the development of tumor vaccines. However, current tumor vaccines with conventional antigen delivery systems mainly induce humoral immunity but not effective cellular immunity. In this study, based on pH-sensitive, ordered macro-microporous zeolitic imidazolate framework-8 (SOM-ZIF-8) and hexadecylsulfonylfluoride (HDSF), an intelligent tumor vaccine delivery system SOM-ZIF-8/HDSF was developed to elicit potent cellular immunity. Results demonstrated that the SOM-ZIF-8 particles could efficiently encapsulate antigen into the macropores, promote antigen uptake by antigen-presenting cells, facilitate lysosomal escape, and enhance antigen cross-presentation and cellular immunity. In addition, the introduction of HDSF could up-regulate the lysosomal pH to protect antigens from acid degradation, which further promoted antigen cross-presentation and cellular immunity. The immunization tests showed that the tumor vaccines based on the delivery system improved antigen-specific cellular immune response. Moreover, the tumor vaccines significantly inhibited tumor growth in B16 melanoma-bearing C57BL/6 mice. These results indicate that SOM-ZIF-8/HDSF as an intelligent vaccine delivery system could be used for the development of novel tumor vaccines.
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