Fluorinated Redox-Responsive Poly(amidoamine) as a Vaccine Delivery System for Antitumor Immunotherapy.

As a potential method for tumor treatment, tumor vaccine immunization induces a tumor-specific cellular immune response via immunization with tumor antigens. The delivery of exogenous antigen proteins into the cytoplasm of antigen-presenting cells is well known to induce an intensive cellular immune response for tumor treatment. In this work, we fluorinated a redox-responsive hyperbranched poly(amidoamine) (HPAA) with heptafluorobutyric anhydride to prepare a fluorinated HPAA (HPAA-F7) for use as a vaccine delivery system for antitumor therapy. The immunization results show that HPAA-F7 as a vaccine carrier could effectively promote the intracellular uptake and cytoplasmatic delivery of antigen proteins and induce potent antitumor cellular immunity. The novel vaccine carrier HPAA-F7 could be further developed for antitumor immunotherapy.