Not applicable – vaccines act via broad immune system activation rather than a discrete molecular drug target

This entry does not represent a single molecular target but describes the systemic mechanism of action characteristic of vaccines. Vaccines utilize antigens, or genetic templates for antigens, to stimulate a broad and coordinated response from the host's immune system (NIH, 2023). This process involves the activation of innate immune sensors, antigen presentation by dendritic cells, and the subsequent recruitment of the adaptive immune system, specifically T-lymphocytes and B-lymphocytes (StatPearls, 2023). Unlike traditional pharmacotherapy that targets a specific protein to modulate a pathway, vaccination aims to establish long-term immunological memory and the production of protective antibodies (CDC, 2024). Consequently, the target is the collective immune repertoire of the individual rather than a discrete receptor or enzyme. This broad activation is essential for providing durable protection against infectious pathogens and, in the case of therapeutic vaccines, malignant cells (PubMed, 2022).

Other names

Vaccine-mediated immunityBroad immune activationActive immunization

Induction of active immunity through antigen presentation and activation of T-cell and B-cell pathways to establish immunological memory (NIH, 2023).