Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis

Autores
Villena, Julio Cesar; Medina, Marcela Susana; Racedo, Silvia María; Alvarez, Gladis Susana
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background/Purpose: Oral immunization with Lactococcus lactis PppA (LPA+), a recombinant strain that is able to express the pneumococcal protective protein A, can improve the resistance to respiratory challenge with Streptococcus pneumoniae in adult mice. In this study, we investigated whether oral immunization protocols using LPA+ are able to protect young mice against pneumococcal respiratory infection. Methods: Young mice (aged, 3 weeks) were immunized orally with LPA+ for 5 consecutive days. Vaccination was performed once (non-boosted group), or twice with a 2-week interval between each immunization (boosted group). At the end of treatment, the specific immune responses and the resistance to pneumococcal infection were studied. Results: We found that the oral immunization with LPA+ was able to induce the production of specific antibodies in the respiratory and intestinal tracts as well as systemically. Analysis of IgG subtypes showed that LPA+ immunization stimulated a mixed Th1 and Th2 response. To assess whether the production of mucosal and systemic antibodies was able to afford protection against respiratory pneumococcal infection, challenge experiments with the pathogenic serotypes 3, 6B, 14, and 23F were carried out. Vaccination with LPA+ was able to increase resistance to infection with the four serotypes of S. pneumoniae, although the protective capacity of the experimental vaccine was different for each of them. Immunization decreased colonization in the lung, prevented bacteremia of serotypes 6B, 14, and 23F, and decreased colony counts of serotype 3. Conclusion: We have shown that the oral immunization of young mice with LPA+ effectively induces the production of specific antibodies against the antigen PppA, both in mucosae and at the systemic level. The antibodies produced may play an important role in the protection against pneumococcal disease, since the young mice immunized with the experimental vaccine showed an increased resistance to infection with different serotypes of the pathogen.
Fil: Villena, Julio Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; Argentina
Fil: Medina, Marcela Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; Argentina
Fil: Racedo, Silvia María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Alvarez, Gladis Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; Argentina
Materia
Lactococcus Lactis
Oral Vaccine
Recombinant Pppa
Streptococcus Pneumoniae
Young Mice
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/57261
Acceder
id CONICETDig_25863b027dfddb9b56742e75447582f2
oai_identifier_str oai:ri.conicet.gov.ar:11336/57261
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactisVillena, Julio CesarMedina, Marcela SusanaRacedo, Silvia MaríaAlvarez, Gladis SusanaLactococcus LactisOral VaccineRecombinant PppaStreptococcus PneumoniaeYoung Micehttps://purl.org/becyt/ford/3.3https://purl.org/becyt/ford/3Background/Purpose: Oral immunization with Lactococcus lactis PppA (LPA+), a recombinant strain that is able to express the pneumococcal protective protein A, can improve the resistance to respiratory challenge with Streptococcus pneumoniae in adult mice. In this study, we investigated whether oral immunization protocols using LPA+ are able to protect young mice against pneumococcal respiratory infection. Methods: Young mice (aged, 3 weeks) were immunized orally with LPA+ for 5 consecutive days. Vaccination was performed once (non-boosted group), or twice with a 2-week interval between each immunization (boosted group). At the end of treatment, the specific immune responses and the resistance to pneumococcal infection were studied. Results: We found that the oral immunization with LPA+ was able to induce the production of specific antibodies in the respiratory and intestinal tracts as well as systemically. Analysis of IgG subtypes showed that LPA+ immunization stimulated a mixed Th1 and Th2 response. To assess whether the production of mucosal and systemic antibodies was able to afford protection against respiratory pneumococcal infection, challenge experiments with the pathogenic serotypes 3, 6B, 14, and 23F were carried out. Vaccination with LPA+ was able to increase resistance to infection with the four serotypes of S. pneumoniae, although the protective capacity of the experimental vaccine was different for each of them. Immunization decreased colonization in the lung, prevented bacteremia of serotypes 6B, 14, and 23F, and decreased colony counts of serotype 3. Conclusion: We have shown that the oral immunization of young mice with LPA+ effectively induces the production of specific antibodies against the antigen PppA, both in mucosae and at the systemic level. The antibodies produced may play an important role in the protection against pneumococcal disease, since the young mice immunized with the experimental vaccine showed an increased resistance to infection with different serotypes of the pathogen.Fil: Villena, Julio Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; ArgentinaFil: Medina, Marcela Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; ArgentinaFil: Racedo, Silvia María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; ArgentinaFil: Alvarez, Gladis Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; ArgentinaElsevier2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57261Villena, Julio Cesar; Medina, Marcela Susana; Racedo, Silvia María; Alvarez, Gladis Susana; Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis; Elsevier; Journal of Microbiology Immunology and Infection; 43; 1; 2-2010; 1-101684-11821995-9133CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S1684-1182(10)60001-1info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1684118210600011info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:40:51Zoai:ri.conicet.gov.ar:11336/57261instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:40:51.488CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
title Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
spellingShingle Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
Villena, Julio Cesar
Lactococcus Lactis
Oral Vaccine
Recombinant Pppa
Streptococcus Pneumoniae
Young Mice
title_short Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
title_full Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
title_fullStr Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
title_full_unstemmed Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
title_sort Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis
dc.creator.none.fl_str_mv Villena, Julio Cesar
Medina, Marcela Susana
Racedo, Silvia María
Alvarez, Gladis Susana
author Villena, Julio Cesar
author_facet Villena, Julio Cesar
Medina, Marcela Susana
Racedo, Silvia María
Alvarez, Gladis Susana
author_role author
author2 Medina, Marcela Susana
Racedo, Silvia María
Alvarez, Gladis Susana
author2_role author
author
author
dc.subject.none.fl_str_mv Lactococcus Lactis
Oral Vaccine
Recombinant Pppa
Streptococcus Pneumoniae
Young Mice
topic Lactococcus Lactis
Oral Vaccine
Recombinant Pppa
Streptococcus Pneumoniae
Young Mice
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.3
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Background/Purpose: Oral immunization with Lactococcus lactis PppA (LPA+), a recombinant strain that is able to express the pneumococcal protective protein A, can improve the resistance to respiratory challenge with Streptococcus pneumoniae in adult mice. In this study, we investigated whether oral immunization protocols using LPA+ are able to protect young mice against pneumococcal respiratory infection. Methods: Young mice (aged, 3 weeks) were immunized orally with LPA+ for 5 consecutive days. Vaccination was performed once (non-boosted group), or twice with a 2-week interval between each immunization (boosted group). At the end of treatment, the specific immune responses and the resistance to pneumococcal infection were studied. Results: We found that the oral immunization with LPA+ was able to induce the production of specific antibodies in the respiratory and intestinal tracts as well as systemically. Analysis of IgG subtypes showed that LPA+ immunization stimulated a mixed Th1 and Th2 response. To assess whether the production of mucosal and systemic antibodies was able to afford protection against respiratory pneumococcal infection, challenge experiments with the pathogenic serotypes 3, 6B, 14, and 23F were carried out. Vaccination with LPA+ was able to increase resistance to infection with the four serotypes of S. pneumoniae, although the protective capacity of the experimental vaccine was different for each of them. Immunization decreased colonization in the lung, prevented bacteremia of serotypes 6B, 14, and 23F, and decreased colony counts of serotype 3. Conclusion: We have shown that the oral immunization of young mice with LPA+ effectively induces the production of specific antibodies against the antigen PppA, both in mucosae and at the systemic level. The antibodies produced may play an important role in the protection against pneumococcal disease, since the young mice immunized with the experimental vaccine showed an increased resistance to infection with different serotypes of the pathogen.
Fil: Villena, Julio Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; Argentina
Fil: Medina, Marcela Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; Argentina
Fil: Racedo, Silvia María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Alvarez, Gladis Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Bioquímica Aplicada; Argentina
description Background/Purpose: Oral immunization with Lactococcus lactis PppA (LPA+), a recombinant strain that is able to express the pneumococcal protective protein A, can improve the resistance to respiratory challenge with Streptococcus pneumoniae in adult mice. In this study, we investigated whether oral immunization protocols using LPA+ are able to protect young mice against pneumococcal respiratory infection. Methods: Young mice (aged, 3 weeks) were immunized orally with LPA+ for 5 consecutive days. Vaccination was performed once (non-boosted group), or twice with a 2-week interval between each immunization (boosted group). At the end of treatment, the specific immune responses and the resistance to pneumococcal infection were studied. Results: We found that the oral immunization with LPA+ was able to induce the production of specific antibodies in the respiratory and intestinal tracts as well as systemically. Analysis of IgG subtypes showed that LPA+ immunization stimulated a mixed Th1 and Th2 response. To assess whether the production of mucosal and systemic antibodies was able to afford protection against respiratory pneumococcal infection, challenge experiments with the pathogenic serotypes 3, 6B, 14, and 23F were carried out. Vaccination with LPA+ was able to increase resistance to infection with the four serotypes of S. pneumoniae, although the protective capacity of the experimental vaccine was different for each of them. Immunization decreased colonization in the lung, prevented bacteremia of serotypes 6B, 14, and 23F, and decreased colony counts of serotype 3. Conclusion: We have shown that the oral immunization of young mice with LPA+ effectively induces the production of specific antibodies against the antigen PppA, both in mucosae and at the systemic level. The antibodies produced may play an important role in the protection against pneumococcal disease, since the young mice immunized with the experimental vaccine showed an increased resistance to infection with different serotypes of the pathogen.
publishDate 2010
dc.date.none.fl_str_mv 2010-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/57261
Villena, Julio Cesar; Medina, Marcela Susana; Racedo, Silvia María; Alvarez, Gladis Susana; Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis; Elsevier; Journal of Microbiology Immunology and Infection; 43; 1; 2-2010; 1-10
1684-1182
1995-9133
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57261
identifier_str_mv Villena, Julio Cesar; Medina, Marcela Susana; Racedo, Silvia María; Alvarez, Gladis Susana; Resistance of Young Mice to Pneumococcal Infection can be Improved by Oral Vaccination with Recombinant Lactococcus lactis; Elsevier; Journal of Microbiology Immunology and Infection; 43; 1; 2-2010; 1-10
1684-1182
1995-9133
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/S1684-1182(10)60001-1
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1684118210600011
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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