Ara h 9-specific adaptive immune receptors

Ara h 9-specific adaptive immune receptors include the repertoire of Immunoglobulin E (IgE), B-cell receptors (BCR), and T-cell receptors (TCR) that recognize the peanut non-specific lipid transfer protein (nsLTP), Ara h 9. These receptors are central to the pathogenesis of peanut allergy, particularly in Mediterranean populations where Ara h 9 is a primary sensitizer (PMID: 19426488). Upon binding Ara h 9, IgE-coated mast cells and basophils release inflammatory mediators, potentially causing life-threatening anaphylaxis (PMID: 30102330). These receptors often exhibit broad cross-reactivity with other nsLTPs, such as Pru p 3 from peach, leading to the clinical condition known as LTP syndrome (PMID: 22920433). Therapeutic interventions target these receptors by either sequestering IgE using monoclonal antibodies like omalizumab or modulating the T-cell and B-cell response through allergen-specific immunotherapy (PMID: 38405948). Immunotherapy aims to shift the immune profile from a Th2-driven allergic response to a regulatory T-cell (Treg) dominated state, increasing the tolerance threshold (PMID: 31601014). These receptors serve as critical focal points for both diagnostic component-resolved testing and the development of precision medicine for food allergies.

Other names

Ara h 9-specific IgEAra h 9-specific T-cell receptorsAra h 9-specific B-cell receptorsnsLTP-specific adaptive immune receptorsLTP-specific IgEPru p 3-specific adaptive immune receptors

Sequestration of allergen-specific IgE to prevent mast cell degranulation and induction of immunological tolerance through T-cell and B-cell modulation.