| Title: | Proteomic Analysis Reveals Allergen Variability among Breeds of the Dust Mite Blomia tropicalis |
| Author(s): | Santos da Silva E; Marques Ponte JC; Barbosa da Silva M; Silva Pinheiro C; Carvalho Pacheco LG; Ferreira F; Briza P; Alcantara-Neves NM; |
| Address: | "Laboratorio de Alergia e Acarologia, Departamento de Ciencias da Biointeracao, Instituto de Ciencias da Saude, Universidade Federal da Bahia, Salvador, Brazil. Department of Biosciences, University of Salzburg, Salzburg, Austria. Programa de Pos-Graduacao em Biotecnologia da Rede Nordeste de Biotecnologia (RENORBIO), Natal, Brazil. Laboratorio de Alergia e Acarologia, Departamento de Ciencias da Biointeracao, Instituto de Ciencias da Saude, Universidade Federal da Bahia, Salvador, Brazil, neuzalcantara@gmail.com. Programa de Pos-Graduacao em Biotecnologia da Rede Nordeste de Biotecnologia (RENORBIO), Natal, Brazil, neuzalcantara@gmail.com" |
| ISSN/ISBN: | 1423-0097 (Electronic) 1018-2438 (Linking) |
| Abstract: | "BACKGROUND: The dawn of the 'omics' technologies has changed allergy research, increasing the knowledge and identification of new allergens. However, these studies have been almost restricted to Dermatophagoides spp. Although Blomia tropicalis has long been established as a clinically important source of allergens, a thorough proteomic characterization is still lacking for this dust mite. OBJECTIVE: To increase knowledge of B. tropicalis allergens through proteomic analysis. METHODS: Eleven in-bred lineages of B. tropicalis were obtained from 11 unique different pregnant females. Their somatic extracts were analyzed and compared with a commercially available extract by liquid chromatography tandem mass spectrometry (LC-MS/MS). RESULTS: Considerable differences in the protein expression profiles were found among the breeds, and most of them displayed higher expression levels of major allergens than the commercially available extract. Blo t 2 was the most prominent allergenic protein in the analyzed extracts. Six identified allergens and 14 isoforms have not yet been recognized by IUIS. Conversely, 3 previously recognized B. tropicalis allergens were not found. CONCLUSIONS: The clear impact of inbreeding on allergen content shown by our study leads us to conclude that the quantification and/or identification of allergens from in-bred lines should be routinely considered for mite cultivation in order to select breeds with higher amounts of major allergens. In this sense, LC-MS/MS may be a useful method to achieve this quality control for research and commercial purposes" |
| Keywords: | "Allergens/*immunology/isolation & purification Animals Animals, Inbred Strains Biological Variation, Population Cell Extracts/chemistry/*immunology Chromatography, Liquid Female Humans Hypersensitivity/*immunology Pheromones/*immunology/isolation & purifi;" |
| Notes: | "MedlineSantos da Silva, Eduardo Marques Ponte, Joao Carlos Barbosa da Silva, Marcia Silva Pinheiro, Carina Carvalho Pacheco, Luis Gustavo Ferreira, Fatima Briza, Peter Alcantara-Neves, Neuza Maria eng Switzerland 2019/09/30 Int Arch Allergy Immunol. 2019; 180(3):159-172. doi: 10.1159/000501964. Epub 2019 Sep 27" |
