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dc.contributor.author
Moyano, Agustina Ayelén
dc.contributor.author
Ferressini Gerpe, Natalia Marina
dc.contributor.author
de Matteo, Elena Noemí
dc.contributor.author
Preciado, María Victoria
dc.contributor.author
Chabay, Paola Andrea
dc.date.available
2023-11-07T18:45:34Z
dc.date.issued
2022-11
dc.identifier.citation
Moyano, Agustina Ayelén; Ferressini Gerpe, Natalia Marina; de Matteo, Elena Noemí; Preciado, María Victoria; Chabay, Paola Andrea; PD-L1 is upregulated in CD163+ tonsillar macrophages from children undergoing EBV primary infection; Frontiers Media; Frontiers in Immunology; 13; 11-2022; 1-9
dc.identifier.issn
1664-3224
dc.identifier.uri
http://hdl.handle.net/11336/217394
dc.description.abstract
Epstein–Barr Virus (EBV) is a tumor associated virus that modulates not only the infected cells but also innate and adaptive immunity. Macrophages play a key role in tumor development and progression. Particularly, the M2 phenotype (CD163) with anti-inflammatory activity contributes to a favorable microenvironment for tumor development while the M1 (CD68) proinflammatory phenotype contributes to a restrictive one. In the context of pediatric EBV infection, little is known about macrophage contribution to PD-L1 expression, a molecule involved in immune exhaustion. We studied tonsils of primary infected (PI), healthy carriers (HC), reactivated (R), and not infected (NI) pediatric patients. Positive correlations were demonstrated for CD68+PD-L1+ in R and for CD163+PD-L1+ only in PI. Furthermore, CD163+PD-L1+ cell numbers were higher than PD-L1+CD68+ in PI patients. In addition, a positive correlation between PD-L1+CD163+ cells and LMP1 viral latent protein was observed in PI patients, and a positive correlation between PD-L1+CD68+ cells and BMRF1 lytic antigen was demonstrated. A positive correlation between TGF-β and PD-L1 expression was demonstrated in HC patients. Our findings indicate that EBV’s lytic and latent antigens might be regulating macrophages’ PD-L1 expression, particularly in PI patients, whereas, surprisingly, only TGF-β could be related to total PD-L1 upregulation. Given the relevance of macrophages and the PD-1/PD-L1 pathway in tumor progression and survival, more studies in early EBV infection could help to develop EBV-associated tumor therapies.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Frontiers Media
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
CHILDREN
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EBV
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MACROPHAGES
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PD-L1
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TUMORIGENESIS
dc.subject.classification
Inmunología
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Medicina Básica
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CIENCIAS MÉDICAS Y DE LA SALUD
dc.title
PD-L1 is upregulated in CD163+ tonsillar macrophages from children undergoing EBV primary infection
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-11-06T16:07:18Z
dc.journal.volume
13
dc.journal.pagination
1-9
dc.journal.pais
Suiza
dc.description.fil
Fil: Moyano, Agustina Ayelén. Gobierno de la Ciudad de Buenos Aires. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas; Argentina
dc.description.fil
Fil: Ferressini Gerpe, Natalia Marina. Gobierno de la Ciudad de Buenos Aires. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas; Argentina
dc.description.fil
Fil: de Matteo, Elena Noemí. Gobierno de la Ciudad de Buenos Aires. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas; Argentina
dc.description.fil
Fil: Preciado, María Victoria. Gobierno de la Ciudad de Buenos Aires. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas; Argentina
dc.description.fil
Fil: Chabay, Paola Andrea. Gobierno de la Ciudad de Buenos Aires. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas; Argentina
dc.journal.title
Frontiers in Immunology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fimmu.2022.940910/full
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.3389/fimmu.2022.940910
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