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Antigenic determinants underlying IgE-mediated anaphylaxis to peanut.
J Allergy Clin Immunol
January 2025
Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, TN; Department of Pharmacology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, TN.
Background: Studies of human IgE and its targeted epitopes on allergens have been very limited. We have an established method to immortalize IgE encoding B cells from allergic individuals.
Objective: To develop an unbiased and comprehensive panel of peanut-specific human IgE mAbs to characterize key immunodominant antigenic regions and epitopes on peanut allergens to map the molecular interactions responsible for inducing anaphylaxis.
Structural determinants of peanut induced anaphylaxis.
J Allergy Clin Immunol
January 2025
Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, TN; Department of Pharmacology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, TN. Electronic address:
Background: Human monoclonal IgE antibodies recognizing peanut allergens have recently become available, but we lack a detailed understanding of how these IgEs target allergens.
Objective: To determine the molecular details of the antibody-allergen interaction for a panel of clinically important human IgE monoclonal antibodies and to develop strategies to disrupt disease causing antibody-allergen interactions.
Methods: We identified candidates from a panel of epitope binned human IgE monoclonals that recognize two important and homologous peanut allergens, Ara h 2 and Ara h 6.
Effects of Food Processing on Allergenicity.
Curr Allergy Asthma Rep
January 2025
Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Purpose Of Review: There is an increasing awareness among clinicians that industrial and household food processing methods can increase or decrease the allergenicity of foods. Modification to allergen properties through processing can enable dietary liberations. Reduced allergenicity may also allow for lower risk immunotherapy approaches.
View Article and Find Full Text PDFProphylactic Peanut Allergen Ara h 6 Sublingual Immunotherapy Drives Expansion of FoxP3Helios Regulatory T Cells in the Absence of Allergen-Specific IgA.
Immunology
January 2025
National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark.
Insights into the underlying immunological mechanisms of prophylactic sublingual immunotherapy (SLIT) may support the development of new strategies for improved prevention and treatment of food allergy. Here, we investigated the humoral, regulatory and sublingual tissue immune response to prophylactic SLIT administration of a single purified peanut allergen in Brown Norway (BN) rats. BN rats received daily sublingual administration of peanut allergen Ara h 6 for three weeks.
View Article and Find Full Text PDFEpithelial immunotherapy for food allergy in children: a systematic review and meta-analysis.
Front Immunol
January 2025
Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Objectives: Traditional methods of treating allergies primarily revolve around avoiding allergens and promptly using rescue medications when allergic symptoms occur. However, this approach is known for its inefficiency and limited success in achieving long-term relief. Our aim was to conduct a comprehensive analysis of previously published randomized controlled trials (RCTs) that explore the effectiveness and safety of epicutaneous immunotherapy (EPIT) as a means to manage food allergies in children.
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