Antigen-capturing nanoparticles improve the abscopal effect and cancer immunotherapy.

Antigen-capturing nanoparticles improve the abscopal effect and cancer immunotherapy.
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DOI:
10.1038/nnano.2017.113
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发表时间:
2017-09
影响因子:
38.3
通讯作者:
Wang AZ
Wang AZ
中科院分区:
材料科学1区
文献类型:
--
作者:
Min Y;Roche KC;Tian S;Eblan MJ;McKinnon KP;Caster JM;Chai S;Herring LE;Zhang L;Zhang T;DeSimone JM;Tepper JE;Vincent BG;Serody JS;Wang AZ

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Immunotherapy holds tremendous promise for improving cancer treatment. Administering radiotherapy with immunotherapy has been shown to improve immune responses and can elicit an “abscopal effect”. Unfortunately, response rates for this strategy remain low. Herein, we report an improved cancer immunotherapy approach that utilizes antigen-capturing nanoparticles (AC-NPs). We engineered several AC-NPs formulations and demonstrated that the set of protein antigens captured by each AC-NP formulation is dependent upon NP surface properties. We showed that AC-NPs deliver tumor specific proteins to antigen-presenting cells and significantly improve the efficacy of αPD-1 treatment using the B16F10 melanoma model, generating up to 20% cure rate as compared to 0% without AC-NPs. Mechanistic studies revealed that AC-NPs induced an expansion of CD8+ cytotoxic T cells and increased both CD4+/Treg and CD8+/Treg ratios. Our work presents a novel strategy for improving cancer immunotherapy with nanotechnology.
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