期刊
MOLECULAR PHARMACEUTICS
卷 10, 期 8, 页码 2996-3004出版社
AMER CHEMICAL SOC
DOI: 10.1021/mp400092y
关键词
PLGA nanoparticles; imiquimod; mucosal vaccine
资金
- Novartis Consumer Health Foundation
We describe here the development of nanoparticles made from poly(lactic-co-glycolic acid) (PLGA) able to deliver an encapsulated antigen with a Toll-Like Receptor-7 (TLR-7) agonist as immunostimulatory signal and coated with a muco-adhesive chitosan-derivate layer. The potential to stimulate an immune response of these vaccine formulations in the absence or presence of the TLR-7 agonist at the systemic and mucosal level were evaluated in mice following subcutaneous or nasal administrations. Intranasally immunized mice developed a high systemic immune response equivalent to mice injected subcutaneously. However, mucosal immune responses were only induced at local and distal sites in mucosally immunized animals. The adjuvant effect of imiquimod on the polarization of the immune response was only detected at local sites, which tends to increase safety of this vaccine delivery system.
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