Abstract

Recently, the multifunctional liposome-constituted microneedle arrays (LiposoMAs) have been proven to be an interesting vaccine adjuvant-delivery system (VADS) that are stable and can be vaccinated via oral cavity mucosal route. When given to mice at oral mucosa, the LiposoMAs can effectively eliminate the ingredient loss caused by chewing, swallowing, and saliva flowing and can, thus, elicit robust systemic as well as mucosal immunoresponses against the loaded antigens. In addition, the LiposoMAs can induce a mixed Th1/Th2 immunoresponse and strong cellular/humoral immunity due to special adjuvanticity and targeting delivery functions of the nanoparticulate VADS. In this chapter, the preparation, characterization as well as mucosal vaccination of the LiposoMAs are introduced. In addition, the methods for sampling mouse organs, tissues, and cells and for evaluation of the immunization efficacy are mainly included.

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