Immunomodulatory Nanoparticle Delivery Systems for Vaccines
Summary
Immunomodulatory nanoparticle delivery systems harness the unique physicochemical properties of engineered particles to enhance vaccine performance. By encapsulating antigens alongside immunostimulatory agents, nanoparticles improve antigen stability, protect labile biomolecules from degradation and allow controlled release kinetics. Surface functionalisation enables precise targeting of antigen-presenting cells, promoting efficient uptake and subsequent activation of adaptive immunity. Certain nanoparticulate platforms act intrinsically as adjuvants, driving balanced T helper cell polarisation for robust humoral and cellular responses. Recent developments encompass polymeric carriers, inorganic frameworks and composite nanozymes designed for both mucosal and parenteral administration. These systems address global challenges such as needle-free delivery, thermostability and antigen dose sparing, paving the way for single-dose and heterologous prime–boost strategies. Their versatility in tailoring immune responses makes them pivotal in pandemic preparedness, emerging-pathogen vaccine design and immunisation programmes against neglected diseases worldwide.
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Immunomodulatory Nanoparticle Delivery Systems for Vaccines publication trend
The graph below shows the total number of articles in immunomodulatory nanoparticle delivery systems for vaccines across all publications each year (not limited to Nature Index journals).
Technical terms
Nanoparticle: A sub-micrometre carrier engineered to transport antigens or adjuvants and control their release.
Adjuvant: A compound that enhances or modulates the immune response to a co-administered antigen.
Mucosal immunity: Immune defence at mucosal surfaces, often mediated by secretory IgA and local cellular responses.
Th1/Th2 response: Distinct T helper cell polarisation states driving principally cellular (Th1) or humoral (Th2) immunity.
Mucoadhesion: The capacity of a material to adhere to mucosal tissues, prolonging retention and enhancing local immune activation.
References
- Polymer-Based Nanomaterials and Applications for Vaccines and Drugs. Polymers (2018).
- Chitosan Nanoparticles Act as an Adjuvant to Promote both Th1 and Th2 Immune Responses Induced by Ovalbumin in Mice. Marine Drugs (2011).
- Mucosal Vaccination for Influenza Protection Enhanced by Catalytic Immune‐Adjuvant. Advanced Science (2020).
- Trimethyl Chitosan Nanoparticles Encapsulated Protective Antigen Protects the Mice Against Anthrax. Frontiers in Immunology (2018).
- Enhancing Stability and Mucoadhesive Properties of Chitosan Nanoparticles by Surface Modification with Sodium Alginate and Polyethylene Glycol for Potential Oral Mucosa Vaccine Delivery. Marine Drugs (2022).
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