Pathogen and autoantigen epitopes

Pathogen and autoantigen epitopes are the specific molecular regions of antigens that are recognized by the adaptive immune system, specifically by antibodies, B cells, or T cells (Janeway's Immunobiology, 9th ed.). Pathogen epitopes are derived from foreign invaders such as viruses, bacteria, and fungi, serving as the primary targets for protective immune responses and vaccine development (Nature Reviews Immunology, 2018, 18: 543–559). Autoantigen epitopes are derived from the host's own proteins and are the targets of aberrant immune attacks in autoimmune diseases, such as Type 1 Diabetes or Multiple Sclerosis (Frontiers in Immunology, 2020, 11: 590110). In therapeutic contexts, pathogen epitopes are utilized in vaccines to prime the immune system, while autoantigen epitopes are increasingly used in tolerogenic therapies to retrain the immune system to ignore self-tissues (Nucleic Acids Research, 2019, 47: D339–D343). Understanding the precise structure and binding affinity of these epitopes is crucial for the design of highly specific biologics and personalized immunotherapies.

Other names

Antigenic determinantsImmune epitopesB-cell epitopesT-cell epitopesSelf-epitopesForeign epitopes

Epitopes serve as the specific binding sites for immune receptors (BCRs, TCRs) and antibodies, facilitating the recognition and subsequent immune response or tolerance induction.