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Cationic Nanoemulsion-Encapsulated Retinoic Acid as an Adjuvant to Promote OVA-Specific Systemic and Mucosal Responses
Published on: February 23, 2024
[The development of mucosal vaccines]
1Nasjonalt folkehelseinstitutt, Divisjon for smittevern, Postboks 4404 Nydalen, 0403 Oslo. hilde.bakke@fhi.no
Summary
Non-living mucosal vaccines, including nasal vaccines, show promise for providing protective immunity against infectious diseases like influenza. Further optimization could make them viable alternatives to injected vaccines.
Area of Science:
- Immunology
- Vaccinology
Context:
- Live oral polio vaccine pioneered mucosal vaccination.
- Several live and one inactivated mucosal vaccines are currently available.
- Research is expanding to include non-living mucosal vaccines.
Purpose:
- To evaluate the potential of non-living mucosal vaccines.
- To explore their efficacy in generating protective immunity.
- To assess their viability as alternatives to injected vaccines.
Summary:
- Non-living nasal vaccines, tested in animal models, demonstrated the ability to induce protective immunity.
- Clinical trials with inactivated influenza nasal vaccines achieved protective serum antibody levels.
- Nasal vaccines also stimulated specific IgA antibodies in secretions, potentially limiting disease spread.
Impact:
- Non-living mucosal vaccines may offer a new strategy for disease prevention.
- Optimized immunization and adjuvant use can enhance vaccine effectiveness.
- These vaccines could become realistic alternatives to traditional injectable vaccines.
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