Biodegradable Polymeric Nanocarrier-Based Immunotherapy in Hepatitis Vaccination

Various commercial vaccines are used for immunization against hepatitis B. However, these immunotherapeutic vaccines require invasive administration, which can induce side effects, and require multiple shots to elicit an immune response, limiting their efficacy. Compared to traditional hepatitis B vaccines, polymer nanoparticles have more advantageous inherent properties as vaccine delivery carriers, providing increased stability of encapsulated antigen, the possibility of single-shot immunotherapy, and the capability of mucosal administration, which allows various routes of vaccination. In this review, we present up-to-date information on the potential of a biodegradable nanoparticle-based delivery system in treating hepatitis B. We also discuss the application of nanoparticles in various vaccines and highlighted strategies for eliciting an appropriate immune response.