B-cell receptor specific for Hevea brasiliensis latex allergens (BCR-Hev-b) (BCR-Hev-b)

B-cell receptors (BCRs) specific for Hevea brasiliensis latex allergens are specialized membrane-bound immunoglobulins on the surface of B lymphocytes that recognize and bind to specific protein components of natural rubber latex, such as Hev b 1 (elongation factor), Hev b 3 (small rubber particle protein), and Hev b 6.02 (hevein) (Source: WHO/IUIS Allergen Nomenclature). These receptors are central to the pathogenesis of latex allergy, a Type I hypersensitivity reaction that is particularly prevalent among healthcare workers and individuals who have undergone multiple surgical procedures (Source: PMID: 21651601). Upon binding to latex allergens, these BCRs trigger B-cell activation and differentiation into plasma cells that secrete allergen-specific IgE antibodies, which then sensitize mast cells and basophils. Subsequent exposure to latex leads to the cross-linking of these IgE antibodies, causing the release of inflammatory mediators that result in clinical symptoms ranging from contact urticaria and asthma to life-threatening anaphylaxis (Source: PMID: 28939245). In a therapeutic context, these BCRs are the primary targets of allergen-specific immunotherapy (ASIT), which aims to reprogram the immune system toward tolerance and the production of protective IgG4 antibodies (Source: PMID: 29103400). Monitoring the frequency and specificity of these BCRs, as well as the levels of the antibodies they produce, is essential for the diagnosis and management of latex-sensitive patients.

Other names

Latex-specific B-cell receptorHevea brasiliensis allergen-specific B-cell receptorHev b-specific BCRNatural rubber latex-specific B-cell receptor

Allergen-specific immunotherapy (ASIT) modulates the immune response by repeatedly exposing these B-cell receptors to controlled doses of latex allergens, which induces peripheral T-cell tolerance, promotes B-cell class switching from IgE to protective IgG4, and reduces the overall sensitivity of the immune system to the allergen (Source: PMID: 30033913, PMID: 28939245).