TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the...
- Autores
- Crespo, Maria Ines; Zacca, Estefanía; Núñez, Nicolás; Ranocchia, Romina Paola; Maccioni, Mariana; Maletto, Belkys Angélica; Pistoresi, Maria Cristina; Moron, Victor Gabriel
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- ssRNA can interact with dendritic cells (DCs) through binding to TLR7, inducing secretion of proinflammatory cytokines and type I IFN. Triggering TLR7 enhances cross-priming of CD8+ T cells, which requires cross-presentation of exogenous Ag to DCs. However, how TLR triggering can affect Ag cross-presentation is still not clear. Using OVA as an Ag model, we observed that stimulation of TLR7 in DCs by polyuridylic acid (polyU), a synthetic ssRNA analog, generates a strong specific cytotoxic response in C57BL/6 mice. PolyU stimulate CD8a+ DCs to cross-prime naive CD8+ T cells in a type I IFN–dependent fashion. This enhanced cross-priming is accompanied by a higher density of OVA256-264/H-2Kb complexes on CD8a+ DCs treated with polyU, as well as by upregulation of costimulatory molecules and increased secretion of proinflammatory cytokines by DCs. Crosspriming of CD8+ T cells by DCs treated with polyU requires proteasome and Ag translocation to cytosol through the Sec61 channel in DCs. The observed enhancement in OVA cross-presentation with polyU in DCs could be mediated by a limited Ag degradation in endophagosomal compartments and a higher permanence of OVA peptide/MHC class I complexes on DCs. These observations clearly reveal that key steps of Ag processing for cross-presentation can be modulated by TLR ligands, opening new avenues for understanding their mechanisms as adjuvants of the immune response.
Fil: Crespo, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Zacca, Estefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Núñez, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Ranocchia, Romina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Maccioni, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Maletto, Belkys Angélica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Pistoresi, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Moron, Victor Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina - Materia
-
Dendritic Cell
Tlr7
Polyu
Cross-Presentation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/27145
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TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surfaceCrespo, Maria InesZacca, EstefaníaNúñez, NicolásRanocchia, Romina PaolaMaccioni, MarianaMaletto, Belkys AngélicaPistoresi, Maria CristinaMoron, Victor GabrielDendritic CellTlr7PolyuCross-Presentationhttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3ssRNA can interact with dendritic cells (DCs) through binding to TLR7, inducing secretion of proinflammatory cytokines and type I IFN. Triggering TLR7 enhances cross-priming of CD8+ T cells, which requires cross-presentation of exogenous Ag to DCs. However, how TLR triggering can affect Ag cross-presentation is still not clear. Using OVA as an Ag model, we observed that stimulation of TLR7 in DCs by polyuridylic acid (polyU), a synthetic ssRNA analog, generates a strong specific cytotoxic response in C57BL/6 mice. PolyU stimulate CD8a+ DCs to cross-prime naive CD8+ T cells in a type I IFN–dependent fashion. This enhanced cross-priming is accompanied by a higher density of OVA256-264/H-2Kb complexes on CD8a+ DCs treated with polyU, as well as by upregulation of costimulatory molecules and increased secretion of proinflammatory cytokines by DCs. Crosspriming of CD8+ T cells by DCs treated with polyU requires proteasome and Ag translocation to cytosol through the Sec61 channel in DCs. The observed enhancement in OVA cross-presentation with polyU in DCs could be mediated by a limited Ag degradation in endophagosomal compartments and a higher permanence of OVA peptide/MHC class I complexes on DCs. These observations clearly reveal that key steps of Ag processing for cross-presentation can be modulated by TLR ligands, opening new avenues for understanding their mechanisms as adjuvants of the immune response.Fil: Crespo, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Zacca, Estefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Núñez, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Ranocchia, Romina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Maccioni, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Maletto, Belkys Angélica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Pistoresi, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Moron, Victor Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaAmerican Association of Immunologists2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/27145Crespo, Maria Ines; Zacca, Estefanía; Núñez, Nicolás; Ranocchia, Romina Paola; Maccioni, Mariana; et al.; TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface; American Association of Immunologists; Journal of Immunology; 190; 3; 1-2013; 948-9600022-1767CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.4049/jimmunol.1102725info:eu-repo/semantics/altIdentifier/url/http://www.jimmunol.org/content/190/3/948info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:33Zoai:ri.conicet.gov.ar:11336/27145instacron: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:34982025-09-29 09:46:33.409CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface |
title |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface |
spellingShingle |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface Crespo, Maria Ines Dendritic Cell Tlr7 Polyu Cross-Presentation |
title_short |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface |
title_full |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface |
title_fullStr |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface |
title_full_unstemmed |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface |
title_sort |
TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface |
dc.creator.none.fl_str_mv |
Crespo, Maria Ines Zacca, Estefanía Núñez, Nicolás Ranocchia, Romina Paola Maccioni, Mariana Maletto, Belkys Angélica Pistoresi, Maria Cristina Moron, Victor Gabriel |
author |
Crespo, Maria Ines |
author_facet |
Crespo, Maria Ines Zacca, Estefanía Núñez, Nicolás Ranocchia, Romina Paola Maccioni, Mariana Maletto, Belkys Angélica Pistoresi, Maria Cristina Moron, Victor Gabriel |
author_role |
author |
author2 |
Zacca, Estefanía Núñez, Nicolás Ranocchia, Romina Paola Maccioni, Mariana Maletto, Belkys Angélica Pistoresi, Maria Cristina Moron, Victor Gabriel |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Dendritic Cell Tlr7 Polyu Cross-Presentation |
topic |
Dendritic Cell Tlr7 Polyu Cross-Presentation |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
ssRNA can interact with dendritic cells (DCs) through binding to TLR7, inducing secretion of proinflammatory cytokines and type I IFN. Triggering TLR7 enhances cross-priming of CD8+ T cells, which requires cross-presentation of exogenous Ag to DCs. However, how TLR triggering can affect Ag cross-presentation is still not clear. Using OVA as an Ag model, we observed that stimulation of TLR7 in DCs by polyuridylic acid (polyU), a synthetic ssRNA analog, generates a strong specific cytotoxic response in C57BL/6 mice. PolyU stimulate CD8a+ DCs to cross-prime naive CD8+ T cells in a type I IFN–dependent fashion. This enhanced cross-priming is accompanied by a higher density of OVA256-264/H-2Kb complexes on CD8a+ DCs treated with polyU, as well as by upregulation of costimulatory molecules and increased secretion of proinflammatory cytokines by DCs. Crosspriming of CD8+ T cells by DCs treated with polyU requires proteasome and Ag translocation to cytosol through the Sec61 channel in DCs. The observed enhancement in OVA cross-presentation with polyU in DCs could be mediated by a limited Ag degradation in endophagosomal compartments and a higher permanence of OVA peptide/MHC class I complexes on DCs. These observations clearly reveal that key steps of Ag processing for cross-presentation can be modulated by TLR ligands, opening new avenues for understanding their mechanisms as adjuvants of the immune response. Fil: Crespo, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina Fil: Zacca, Estefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina Fil: Núñez, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina Fil: Ranocchia, Romina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina Fil: Maccioni, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina Fil: Maletto, Belkys Angélica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina Fil: Pistoresi, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina Fil: Moron, Victor Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina |
description |
ssRNA can interact with dendritic cells (DCs) through binding to TLR7, inducing secretion of proinflammatory cytokines and type I IFN. Triggering TLR7 enhances cross-priming of CD8+ T cells, which requires cross-presentation of exogenous Ag to DCs. However, how TLR triggering can affect Ag cross-presentation is still not clear. Using OVA as an Ag model, we observed that stimulation of TLR7 in DCs by polyuridylic acid (polyU), a synthetic ssRNA analog, generates a strong specific cytotoxic response in C57BL/6 mice. PolyU stimulate CD8a+ DCs to cross-prime naive CD8+ T cells in a type I IFN–dependent fashion. This enhanced cross-priming is accompanied by a higher density of OVA256-264/H-2Kb complexes on CD8a+ DCs treated with polyU, as well as by upregulation of costimulatory molecules and increased secretion of proinflammatory cytokines by DCs. Crosspriming of CD8+ T cells by DCs treated with polyU requires proteasome and Ag translocation to cytosol through the Sec61 channel in DCs. The observed enhancement in OVA cross-presentation with polyU in DCs could be mediated by a limited Ag degradation in endophagosomal compartments and a higher permanence of OVA peptide/MHC class I complexes on DCs. These observations clearly reveal that key steps of Ag processing for cross-presentation can be modulated by TLR ligands, opening new avenues for understanding their mechanisms as adjuvants of the immune response. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01 |
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/11336/27145 Crespo, Maria Ines; Zacca, Estefanía; Núñez, Nicolás; Ranocchia, Romina Paola; Maccioni, Mariana; et al.; TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface; American Association of Immunologists; Journal of Immunology; 190; 3; 1-2013; 948-960 0022-1767 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/27145 |
identifier_str_mv |
Crespo, Maria Ines; Zacca, Estefanía; Núñez, Nicolás; Ranocchia, Romina Paola; Maccioni, Mariana; et al.; TLR7 triggering with Polyuridylic acid promotes cross-presentation in CD8a+ conventional dendritic cells by enhancing antigen preservation and MHC Class I antigen permanence on the dendritic cell surface; American Association of Immunologists; Journal of Immunology; 190; 3; 1-2013; 948-960 0022-1767 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.4049/jimmunol.1102725 info:eu-repo/semantics/altIdentifier/url/http://www.jimmunol.org/content/190/3/948 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
American Association of Immunologists |
publisher.none.fl_str_mv |
American Association of Immunologists |
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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1844613453793198080 |
score |
13.070432 |