T helper type 2 cell-mediated immune response (Th2 cell-mediated immune response)

The **Th2 cell-mediated immune response** refers to the activation and regulation of immune activity primarily through **T helper type 2 (Th2) cells**, a subset of CD4+ T lymphocytes. Th2 cells are differentiated in response to cytokines (notably IL-4, IL-2) and are characterized by secretion of cytokines such as IL-4, IL-5, IL-9, IL-10, IL-13, and IL-25. These cells orchestrate the **humoral immune response** including B cell antibody class switching (especially to IgE), recruitment and activation of eosinophils, basophils, and mast cells, and stimulation of other effector mechanisms to protect against extracellular parasites (e.g., helminths), allergens, and toxins[1][2][3][4][5]. Th2 cell overactivity is central to the pathogenesis of **allergic diseases** (asthma, rhinitis, dermatitis), some autoimmune conditions, and tissue fibrosis. While not a therapeutic target in the molecular sense, Th2 cell function and their cytokines are **modulated by biologic drugs** to treat severe allergic and eosinophilic inflammatory diseases[3]. Safety concerns include immunosuppression that can compromise host defenses against parasites and other pathogens when this pathway is pharmacologically targeted[3][5]. *This target is not a molecule or receptor but rather an immune response/pathway; when structured information is needed, select specific Th2 cell markers (e.g., cytokines or receptors such as IL-4R) for molecular targeting.*

Other names

Th2 responseType 2 helper T cell responseType 2 immunityT helper cell type 2 immune response

Cytokine neutralization (blocking IL-4, IL-5, IL-13) Receptor antagonism (blocking IL-4Rα, IL-5Rα) General immunosuppression