Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy
- Autores
- Smaldini, Paola Lorena; Ibañez, Andrés Esteban; Fossati, Carlos Alberto; Cassataro, Juliana; Docena, Guillermo
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Food allergies are increasingly common disorders and no therapeutic strategies are yet approved. The unlipidated Omp16 (U-Omp16) is the outer membrane protein of 16 kDa from B. abortus and possesses a mucosal adjuvant property. In this study, we aimed to examine the U-Omp16 capacity to abrogate an allergen-specific Th2 immune response when it is administered as an oral adjuvant in a mouse model of food allergy. Balb/c mice were sensitized with cholera toxin and cow's milk proteins (CMP) by gavage and simultaneously treated with U-Omp16 and CMP. Oral challenge with CMP was performed to evaluate the allergic status of mice. Symptoms, local (small bowel cytokine and transcription factor gene expression) and systemic (specific isotypes and spleen cell-secreted cytokines) parameters, and skin tests were done to evaluate the immune response. We found that the oral administration of U-Omp16 with CMP during sensitization dampened the allergic symptoms, with negativization of immediate skin test and increased skin DTH response. Serum specific IgE and IL-5 were inhibited and a Th1 response was promoted (specific IgG2a antibodies and CMP-induced IFN-γ secretion). We found at the mucosal site an inhibition of the gene expression corresponding to IL-13 and Gata-3, with an induction of IFN-γ and T-bet. These results indicated that the oral administration of U-Omp16 significantly controlled the allergic response in sensitized mice with a shift of the balance of Th1- and Th2-T cells toward Th1 predominance. These findings suggest that U-Omp16 may be useful as a Th1-directing adjuvant in an oral vaccine.
Laboratorio de Investigaciones del Sistema Inmune - Materia
-
Ciencias Médicas
IgE
Immunomodulation
Intestinal mucosa
Milk allergy
Oral adjuvant
U-Omp16 - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85127
Ver los metadatos del registro completo
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Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergySmaldini, Paola LorenaIbañez, Andrés EstebanFossati, Carlos AlbertoCassataro, JulianaDocena, GuillermoCiencias MédicasIgEImmunomodulationIntestinal mucosaMilk allergyOral adjuvantU-Omp16Food allergies are increasingly common disorders and no therapeutic strategies are yet approved. The unlipidated Omp16 (U-Omp16) is the outer membrane protein of 16 kDa from B. abortus and possesses a mucosal adjuvant property. In this study, we aimed to examine the U-Omp16 capacity to abrogate an allergen-specific Th2 immune response when it is administered as an oral adjuvant in a mouse model of food allergy. Balb/c mice were sensitized with cholera toxin and cow's milk proteins (CMP) by gavage and simultaneously treated with U-Omp16 and CMP. Oral challenge with CMP was performed to evaluate the allergic status of mice. Symptoms, local (small bowel cytokine and transcription factor gene expression) and systemic (specific isotypes and spleen cell-secreted cytokines) parameters, and skin tests were done to evaluate the immune response. We found that the oral administration of U-Omp16 with CMP during sensitization dampened the allergic symptoms, with negativization of immediate skin test and increased skin DTH response. Serum specific IgE and IL-5 were inhibited and a Th1 response was promoted (specific IgG2a antibodies and CMP-induced IFN-γ secretion). We found at the mucosal site an inhibition of the gene expression corresponding to IL-13 and Gata-3, with an induction of IFN-γ and T-bet. These results indicated that the oral administration of U-Omp16 significantly controlled the allergic response in sensitized mice with a shift of the balance of Th1- and Th2-T cells toward Th1 predominance. These findings suggest that U-Omp16 may be useful as a Th1-directing adjuvant in an oral vaccine.Laboratorio de Investigaciones del Sistema Inmune2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2015-2023http://sedici.unlp.edu.ar/handle/10915/85127enginfo:eu-repo/semantics/altIdentifier/issn/2164-5515info:eu-repo/semantics/altIdentifier/doi/10.4161/hv.28845info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:48:40Zoai:sedici.unlp.edu.ar:10915/85127Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:48:41.243SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy |
title |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy |
spellingShingle |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy Smaldini, Paola Lorena Ciencias Médicas IgE Immunomodulation Intestinal mucosa Milk allergy Oral adjuvant U-Omp16 |
title_short |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy |
title_full |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy |
title_fullStr |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy |
title_full_unstemmed |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy |
title_sort |
Oral delivery of Brucella spp. recombinant protein U-Omp16 abrogates the IgE-mediated milk allergy |
dc.creator.none.fl_str_mv |
Smaldini, Paola Lorena Ibañez, Andrés Esteban Fossati, Carlos Alberto Cassataro, Juliana Docena, Guillermo |
author |
Smaldini, Paola Lorena |
author_facet |
Smaldini, Paola Lorena Ibañez, Andrés Esteban Fossati, Carlos Alberto Cassataro, Juliana Docena, Guillermo |
author_role |
author |
author2 |
Ibañez, Andrés Esteban Fossati, Carlos Alberto Cassataro, Juliana Docena, Guillermo |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Ciencias Médicas IgE Immunomodulation Intestinal mucosa Milk allergy Oral adjuvant U-Omp16 |
topic |
Ciencias Médicas IgE Immunomodulation Intestinal mucosa Milk allergy Oral adjuvant U-Omp16 |
dc.description.none.fl_txt_mv |
Food allergies are increasingly common disorders and no therapeutic strategies are yet approved. The unlipidated Omp16 (U-Omp16) is the outer membrane protein of 16 kDa from B. abortus and possesses a mucosal adjuvant property. In this study, we aimed to examine the U-Omp16 capacity to abrogate an allergen-specific Th2 immune response when it is administered as an oral adjuvant in a mouse model of food allergy. Balb/c mice were sensitized with cholera toxin and cow's milk proteins (CMP) by gavage and simultaneously treated with U-Omp16 and CMP. Oral challenge with CMP was performed to evaluate the allergic status of mice. Symptoms, local (small bowel cytokine and transcription factor gene expression) and systemic (specific isotypes and spleen cell-secreted cytokines) parameters, and skin tests were done to evaluate the immune response. We found that the oral administration of U-Omp16 with CMP during sensitization dampened the allergic symptoms, with negativization of immediate skin test and increased skin DTH response. Serum specific IgE and IL-5 were inhibited and a Th1 response was promoted (specific IgG2a antibodies and CMP-induced IFN-γ secretion). We found at the mucosal site an inhibition of the gene expression corresponding to IL-13 and Gata-3, with an induction of IFN-γ and T-bet. These results indicated that the oral administration of U-Omp16 significantly controlled the allergic response in sensitized mice with a shift of the balance of Th1- and Th2-T cells toward Th1 predominance. These findings suggest that U-Omp16 may be useful as a Th1-directing adjuvant in an oral vaccine. Laboratorio de Investigaciones del Sistema Inmune |
description |
Food allergies are increasingly common disorders and no therapeutic strategies are yet approved. The unlipidated Omp16 (U-Omp16) is the outer membrane protein of 16 kDa from B. abortus and possesses a mucosal adjuvant property. In this study, we aimed to examine the U-Omp16 capacity to abrogate an allergen-specific Th2 immune response when it is administered as an oral adjuvant in a mouse model of food allergy. Balb/c mice were sensitized with cholera toxin and cow's milk proteins (CMP) by gavage and simultaneously treated with U-Omp16 and CMP. Oral challenge with CMP was performed to evaluate the allergic status of mice. Symptoms, local (small bowel cytokine and transcription factor gene expression) and systemic (specific isotypes and spleen cell-secreted cytokines) parameters, and skin tests were done to evaluate the immune response. We found that the oral administration of U-Omp16 with CMP during sensitization dampened the allergic symptoms, with negativization of immediate skin test and increased skin DTH response. Serum specific IgE and IL-5 were inhibited and a Th1 response was promoted (specific IgG2a antibodies and CMP-induced IFN-γ secretion). We found at the mucosal site an inhibition of the gene expression corresponding to IL-13 and Gata-3, with an induction of IFN-γ and T-bet. These results indicated that the oral administration of U-Omp16 significantly controlled the allergic response in sensitized mice with a shift of the balance of Th1- and Th2-T cells toward Th1 predominance. These findings suggest that U-Omp16 may be useful as a Th1-directing adjuvant in an oral vaccine. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
dc.type.none.fl_str_mv |
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http://sedici.unlp.edu.ar/handle/10915/85127 |
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eng |
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eng |
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