Anti-Dermatophagoides pteronyssinus allergen 1-specific B-cell receptor (Anti-Der p 1 BCR)

The Anti-Dermatophagoides pteronyssinus allergen 1 (Der p 1)-specific B-cell receptor (BCR) and its secreted antibody forms are central components of the allergic immune response to house dust mites. Der p 1 is a major cysteine protease allergen that triggers the production of specific IgE antibodies in sensitized individuals (Thomas et al., 2002, Allergy). These antibodies, when bound to mast cells and basophils via the high-affinity IgE receptor (FcεRI), mediate the immediate hypersensitivity reactions characteristic of allergic asthma and rhinitis upon subsequent allergen exposure. Targeting these specific BCRs or neutralizing the resulting IgE antibodies represents a key strategy in precision allergy treatment. Therapeutic approaches include allergen-specific immunotherapy (AIT), which aims to desensitize the immune system by modulating B-cell behavior and inducing class switching to IgG4, and the use of monoclonal antibodies to sequester IgE or potentially deplete the specific B-cell clones (Levin et al., 2016, JACI). Understanding the repertoire and affinity of these receptors is crucial for developing more effective vaccines and biologics for house dust mite allergy.

Other names

Der p 1-specific B-cell receptorDer p 1-specific immunoglobulinAnti-Der p 1 IgEAnti-Der p 1 IgGHouse dust mite allergen 1-specific BCR

Allergen-specific immunotherapy (AIT) utilizes house dust mite allergen extracts to induce immunological tolerance by promoting the expansion of regulatory T and B cells and shifting antibody production from pathogenic IgE to protective IgG4 (Akdis & Akdis, 2014, Nature Reviews Drug Discovery). Anti-IgE monoclonal antibodies like omalizumab bind to the Cε3 domain of free IgE, preventing its binding to the high-affinity FcεRI receptor on mast cells and basophils (PubChem). Experimental therapies like quilizumab target the M1-prime segment of membrane-bound IgE on B cells to deplete IgE-switched B cell populations (Brightling et al., 2015, JACI).