Disease-Specific Antigen

A disease-specific antigen is a molecule or molecular structure that is uniquely or predominantly associated with a particular disease state, such as cancer, infection, or autoimmune disorders. The specific identity of the antigen varies depending on the disease in question. These antigens are recognized by the immune system and can serve as targets for diagnostic tests, vaccines, and therapeutic interventions. Ideal properties include: High expression density on diseased versus normal tissue, Homogeneous distribution across all target pathological cells, Minimal presence in vital healthy tissues, and Low rate of shedding from cell surface.

Other names

Tumor-associated antigens (TAAs)Pathogen-derived antigensAutoantigensDisease-associated antigens (DAA)

Antibody binding to target antigen, inducing cell death or immune activation; delivery of cytotoxic payload to target cells