Differential Plasma-cell evolution is linked with Dermatophagoides pteronyssinus immunotherapy response

• Published in: Scientific reports 2015-09, Vol.5 (1), p.14482-14482, Article 14482
• Main Authors: Fernández, Tahia D., Gómez, Enrique, Doña, Inmaculada, Campo, Paloma, Rondon, Carmen, Gonzalez, Miguel, Gomez, Francisca, Palomares, Francisca, Salas, Maria, Blanca, Miguel, Mayorga, Cristobalina, Torres, Maria J.
• Format: Article
• Language: English
• Subjects: 13/1; 13/31; 631/250/251/1574; 692/308/1892; 692/53/2422; 692/53/2423; 82/80; Adult; Allergens; Allergens - immunology; Allergens - therapeutic use; Allergic rhinitis; Allergies; Animals; B-Lymphocyte Subsets - drug effects; B-Lymphocyte Subsets - immunology; B-Lymphocyte Subsets - pathology; Biomarkers - blood; Case-Control Studies; Cell Differentiation; Cell Lineage - drug effects; Cell Lineage - immunology; Dermatophagoides pteronyssinus - immunology; Desensitization, Immunologic; Female; Humanities and Social Sciences; Humans; Hypersensitivity; Immune Tolerance; Immunoglobulin E - blood; Immunoglobulin G; Immunoglobulin G - blood; Immunologic Memory; Immunological memory; Immunological tolerance; Immunology; Immunotherapy; Inflammation; Lymphocyte Count; Lymphocytes B; Lymphocytes T; Male; Memory cells; multidisciplinary; Plasma; Plasma cells; Plasma Cells - drug effects; Plasma Cells - immunology; Plasma Cells - pathology; Prognosis; Rhinitis; Rhinitis, Allergic - blood; Rhinitis, Allergic - diagnosis; Rhinitis, Allergic - immunology; Rhinitis, Allergic - therapy; Science; Subpopulations; T cell receptors; Treatment Outcome
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/srep14482

Allergic rhinitis is highly prevalent worldwide. Immunotherapy has been shown to control its symptoms, however, up to 30% of patients may not respond. Previous studies of the immunological mechanisms involved in allergen-immunotherapy (AIT) have focused on the humoral and T-cell response and several studies have evaluated some B-cell subpopulations during AIT and their role in immunological tolerance. However, although B and plasma-cell subpopulations are two of the most important cellular subtypes involved in allergic reactions, their relation with AIT efficacy remains unelucidated. The objective was to analyze the effects of immunotherapy on different B and plasma-cell subpopulations and whether these changes correlate with the clinical response to the treatment. Although no changes are found in B-cell subpopulations, responder patients show increased levels of memory B-cells even before the beginning of treatment. Changes in plasma-cell subpopulations are found, mainly in circulating inflammatory plasma-cells that could affect the response to the allergen. Moreover, an early increase of specific-IgG4 and IgG4 secreting-cells was found. All these suggest that the determination of the memory B-cells before the initiation of the treatment and the quantification of IgG4 and IgG4-secreting-cells in the first months of immunotherapy, could serve as markers for the clinical response to treatment.