Molecular Classification
Other
Other Names
Allergen immunotherapy, Specific immunotherapy, Allergen desensitization, Hypo-sensitization
Disease Roles
AllergyInflammationAutoimmune disease

Allergen immunotherapy mechanism Overview

Allergen immunotherapy mechanism refers to the process by which repeated and gradually increasing exposure to a specific allergen leads to immune system desensitization, shifting the immune response towards tolerance, reducing Th2-driven allergic inflammation, increasing regulatory T cell (Treg) activity, and rebalancing antibody profiles from IgE to blocking IgG4. This therapeutic approach modifies the course of IgE-mediated allergic diseases by targeting the immune processes underlying hypersensitivity[1][2][3][4][5][6].

Mechanism of Action

Induction of peripheral tolerance using escalating doses of allergen; Generation of regulatory T cells (Treg/Tr1); Cytokine shift to IL-10, TGF-β; Immunoglobulin isotype switch from IgE to IgG4/IgA; Suppression of mast cell and basophil activity

Biological Functions

Immune tolerance induction
Suppression of hypersensitivity
Regulation of B cell isotype switching
Induction of regulatory T cells
Suppression of mast cell/basophil activation

Disease Associations

Allergy
Inflammation
Autoimmune disease

Safety Considerations

  • Risk of anaphylaxis
  • Local/systemic allergic reactions
  • Requires long-term administration and careful monitoring

Associated Biomarkers

Biomarker
Allergen-specific IgG4
Allergen-specific IgE
Treg cell quantities and function
IL-10 levels