Molecular adjuvants and immunomodulators: new approaches to immunization

Area of Science:

• Immunology
• Vaccinology
• Microbiology

Background:

• Identifying microbial epitopes for protective immunity is advancing.
• Low-molecular-weight synthetic antigens require adjuvants to boost immunogenicity.
• Adjuvant research is rapidly expanding to meet this need.

Purpose of the Study:

• To review adjuvant substances with demonstrated activity in animals for potential human vaccine use.
• To describe immunomodulators that enhance resistance to microbial challenges.
• To highlight key microbial-derived adjuvants and other promising compounds.

Main Methods:

• Review of scientific literature on adjuvants and immunomodulators.
• Focus on substances with proven efficacy in animal models.
• Detailed discussion of characterized microbial adjuvants and other agents.

Main Results:

• Several adjuvant substances show potential for human vaccines based on animal studies.
• Immunomodulators can nonspecifically enhance resistance to microbial infections.
• Key microbial adjuvants include lipopolysaccharides, muramyl dipeptides, and polyribonucleotides.

Conclusions:

• Adjuvants are essential for developing effective vaccines against microbial pathogens.
• A diverse range of microbial and synthetic compounds show promise as vaccine adjuvants.
• Further research into these adjuvants could lead to improved human vaccines.