BAFF augments IgA2 and IL-10 production by TLR7/8 stimulated total peripheral blood B cells.
Eur J Immunol
; 48(2): 283-292, 2018 02.
Article
en En
| MEDLINE
| ID: mdl-28921509
ABSTRACT
Class-switching of B cells to IgA can be induced via both T-cell-dependent and T-cell-independent mechanisms. IgA is most predominantly produced mucosally and is important for combating infections and allergies. In contrast to mice, humans have two forms of IgA; IgA1 and IgA2 with diverse tissue distribution. In early life, IgA levels might be sub-optimal especially during the fall season when bacterial and viral infections are more common. Therefore, we investigated using human B cells whether T-cell-independent factors -promoting cell survival, class switching and immunoglobulin secretion- BAFF, APRIL, IL-10 and retinoic acid can boost IgA production in the context of viral or bacterial infection. To this end total and naive peripheral blood B cells were stimulated with these factors for 6 days in the presence or absence of TLR7/8 agonist R848 (mimicking viral infection) or TLR9 agonist CpG-ODN (mimicking bacterial infection). We show that BAFF significantly augments IgA2 production in TLR7/8 stimulated mature, but not naïve B cells. In addition, BAFF augments IL-10 production and viability in TLR7/8 and TLR9 stimulated mature B cells. These data warrant further investigation of its role in immune regulation both in the periphery and mucosal tissues in early life or during disease.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Células Sanguíneas
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Linfocitos B
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Linfocitos T
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Factor Activador de Células B
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Hipersensibilidad
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Infecciones
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Membrana Mucosa
Límite:
Animals
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Humans
Idioma:
En
Año:
2018
Tipo del documento:
Article