Host mucosal immune response

The host mucosal immune response is a complex system consisting of innate and adaptive immune mechanisms operating at mucosal surfaces such as the respiratory, gastrointestinal, and urogenital tracts. It relies on the coordinated activities of mucosal immune cells (including dendritic cells, innate lymphoid cells, tissue-resident memory T cells), mucosa-associated lymphoid tissues (like GALT and NALT), and specialized antibodies (mainly IgA) to provide rapid and localized defense against pathogens. Additionally, mucosal immunity can induce systemic immune reactions and plays a crucial role in regulating tolerance to commensal microbes and food antigens. Because the mucosal immune response is not a single molecule or receptor, but rather a protective system, it is not considered a canonical therapeutic target, but can be modulated or enhanced by vaccines and immunotherapies designed to induce robust mucosal defenses. For structured molecular target databases, this entry should be flagged as incorrect/missing specificity, as it is a process, not a molecule or receptor. If specific molecular targets within the host mucosal immune response (such as IgA, pIgR, or memory T cells) are sought, those should be listed separately.

Other names

Mucosal immunityMucosal immune systemMALT (mucosa-associated lymphoid tissue)mucosal defense