A Virus-Mimicking Nucleic Acid Nanogel Reprograms Microglia and Macrophages for Glioblastoma Therapy

被引:123
作者
Gao, Xihui [1 ,2 ,3 ]
Li, Sha [2 ]
Ding, Fei [1 ]
Liu, Xinlong [1 ]
Wu, Yijing [1 ]
Li, Jing [2 ]
Feng, Jing [2 ]
Zhu, Xinyuan [1 ]
Zhang, Chuan [1 ,2 ]
机构
[1] Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, State Key Lab Met Matrix Composites, Sch Chem & Chem Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
[2] Southern Med Univ, Shanghai Univ Med & Hlth Sci, Shanghai Jiao Tong Univ, Affiliated Peoples Hosp South Campus 6,Affiliated, 6600th Nanfeng Rd, Shanghai 201499, Peoples R China
[3] Fudan Univ, Sch Basic Med Sci, Key Lab Med Mol Virol MOE NHC CAMS, 131 Dong An Rd, Shanghai 200032, Peoples R China
基金
中国国家自然科学基金;
关键词
glioblastoma; miRNA; nucleic acid nanogels; phenotype reprogramming; tumor microenvironment;
D O I
10.1002/adma.202006116
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Immunotherapy is recognized as one of the most promising approaches to treat cancers. However, its effect in glioblastoma (GBM) treatment is insufficient, which can in part be attributed to the immunosuppressive tumor microenvironment (TME). Microglia and macrophages are the main immune infiltrating cells in the TME of GBM. Unfortunately, instead of initiating the anti-tumor response, GBM-infiltrating microglia and macrophages switch to a tumor-promoting phenotype (M2), and support tumor growth, angiogenesis, and immunosuppression by the release of cytokines. In this work, a virus-mimicking membrane-coated nucleic acid nanogel Vir-Gel embedded with therapeutic miRNA is developed, which can reprogram microglia and macrophages from a pro-invasive M2 phenotype to an anti-tumor M1 phenotype. By mimicking the virus infection process, Vir-Gel significantly enhances the targetability and cell uptake efficiency of the miR155-bearing nucleic acid nanogel. In vivo evaluations demonstrate that Vir-Gel apparently prolongs the circulation lifetime of miR155 and endows it with an active tumor-targeting capability and excellent tumor inhibition efficacy. Owing to its noninvasive feature and effective delivery capability, the virus-mimicking nucleic acid nanogel provides a general and convenient platform that can successfully treat a wide range of diseases.
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页数:9
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