The immune space: a concept and template for rationalizing vaccine development

Area of Science:

• Vaccinology
• Immunology
• Biotechnology

Background:

• Candidate vaccine development has surged due to new antigen manipulation tools and delivery methods.
• Selecting vaccines for large-scale efficacy testing is challenging, particularly for diseases lacking animal models or immune correlates (e.g., dengue, HIV, tuberculosis).

Purpose of the Study:

• To establish guidelines for selecting vaccine candidates for advanced testing.
• To introduce a standardized "immune space" template for characterizing early immune responses to candidate vaccines.

Main Methods:

• The "immune space" template standardizes the description of immune response quality, level, and durability from early human trials.
• This approach facilitates comparison of vaccine candidates and identification of unique profiles.

Main Results:

• The "immune space" template provides a framework to assess if a candidate vaccine elicits unique immune responses.
• Characterizing immune responses offers insight into the vaccine's proposed mechanism of action.

Conclusions:

• The "immune space" approach offers a standardized method for selecting vaccine candidates for efficacy trials.
• This methodology is particularly valuable for diseases with unknown correlates of immune protection and may be applicable beyond HIV vaccine development.