Artículo
Extrafollicular plasmablast present in the acute phase of infections express high levels of PD-L1 and are able to limit T cell respose
Gorosito Serran, Melisa
; Fiocca Vernengo, Facundo
; Almada, Laura
; Beccaria, Cristian Gabriel
; Gazzoni, Yamila Natali
; Canete, Pablo F.; Roco, Jonathan A.; Tosello Boari, Jimena
; Ramello, María Cecilia
; Wehrens, Ellen; Cai, Yeping; Zuniga, Elina Isabel
; Montes, Carolina Lucia
; Cockburn, Ian A.; Acosta Rodriguez, Eva Virginia
; Vinuesa, Carola G.; Gruppi, Adriana
Fecha de publicación:
05/2022
Editorial:
Frontiers Media
Revista:
Frontiers in Immunology
ISSN:
1664-3224
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
During infections with protozoan parasites or some viruses, T cell immunosuppression is generated simultaneously with a high B cell activation. It has been described that, as well as producing antibodies, plasmablasts, the differentiation product of activated B cells, can condition the development of protective immunity in infections. Here, we show that, in T. cruzi infection, all the plasmablasts detected during the acute phase of the infection had higher surface expression of PD-L1 than other mononuclear cells. PD-L1hi plasmablasts were induced in vivo in a BCR-specific manner and required help from Bcl-6+CD4+T cells. PD-L1hi expression was not a characteristic of all antibody-secreting cells since plasma cells found during the chronic phase of infection expressed PD-L1 but at lower levels. PD-L1hi plasmablasts were also present in mice infected with Plasmodium or with lymphocytic choriomeningitis virus, but not in mice with autoimmune disorders or immunized with T cell-dependent antigens. In vitro experiments showed that PD-L1hi plasmablasts suppressed the T cell response, partially via PD-L1. Thus, this study reveals that extrafollicular PD-L1hi plasmablasts, whose peaks of response precede the peak of germinal center response, may have a modulatory function in infections, thus influencing T cell response.
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Articulos(CIBICI)
Articulos de CENTRO DE INV.EN BIOQUI.CLINICA E INMUNOLOGIA
Articulos de CENTRO DE INV.EN BIOQUI.CLINICA E INMUNOLOGIA
Citación
Gorosito Serran, Melisa; Fiocca Vernengo, Facundo; Almada, Laura; Beccaria, Cristian Gabriel; Gazzoni, Yamila Natali; et al.; Extrafollicular plasmablast present in the acute phase of infections express high levels of PD-L1 and are able to limit T cell respose; Frontiers Media; Frontiers in Immunology; 13; 5-2022; 1-13
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