Novel antigen delivery technologies: a review.

Area of Science:

• Immunology
• Biotechnology
• Pharmaceutical Sciences

Background:

• Conventional vaccines (live attenuated, killed, recombinant proteins) have significantly reduced global morbidity and mortality.
• Traditional vaccine development often relied on serendipity, leading to lower success rates and safety concerns with live pathogens.
• Despite successes, challenges in antigen stability, safety, and immunogenicity necessitate novel vaccine delivery technologies.

Purpose of the Study:

• To review current advancements in novel vaccine delivery systems.
• To explore non-parenteral (non-needle) routes for vaccine administration.
• To highlight technologies improving vaccine efficacy and safety.

Main Methods:

• Review of current literature on vaccine delivery systems.
• Focus on novel antigen delivery technologies.
• Evaluation of non-conventional administration routes (oral, intranasal, transcutaneous, intradermal).

Main Results:

• Development of new vaccine technologies including DNA vaccines, adjuvants, nanoparticles, liposomes, microneedles, and NanoMAP.
• Non-parenteral routes offer potential to decrease needle-borne disease risks and reduce the need for trained personnel and sterile equipment.
• Ongoing research aims to overcome hurdles in antigen stability, safety, and immunogenicity for improved vaccine performance.

Conclusions:

• Novel vaccine delivery systems and non-parenteral routes represent a significant advancement in vaccinology.
• These innovations promise enhanced vaccine efficacy, improved safety profiles, and broader accessibility.
• Continued development in this field is crucial for addressing global health challenges through more effective immunization strategies.