Abstract
Aim: Low immunogenicity remains a major obstacle in realizing the full potential of cancer vaccines. In this study, we evaluated CpG-coated tumor antigen (Tag)-encapsulating 'bacteriomimetic' nanoparticles (CpG-nanoparticle [NP]-Tag NPs) as an approach to enhance anti-tumor immunity. Materials & methods: CpG-NP-Tag NPs were synthesized, characterized for their physicochemical properties and tested in vivo. Results: We found CpG predosing followed by intraperitoneal (IP) immunization with CpG-NP-Tag NPs significantly attenuated tumor growth in female BALB/c mice compared with respective controls. Histopathological and Immunofluorescence data revealed CpG-NP-Tag tumors had lower proliferation, higher apoptotic activity, greater CD4+ and CD8+ T cell infiltration as well as higher IFN-γ levels as compared with control groups. Conclusion: Our findings suggest CpG-NP-Tag NPs can enhance anti-tumor effect of nanoparticulate tumor vaccination system.
Original language | English |
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Pages (from-to) | 915-929 |
Number of pages | 15 |
Journal | Nanomedicine |
Volume | 10 |
Issue number | 6 |
DOIs | |
State | Published - 1 Mar 2015 |
Keywords
- NP
- antigen
- breast cancer
- immunotherapy
- nanoparticle
- vaccines