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25.07.2017 | Original Article | Ausgabe 4/2017 Open Access

Immunologic Research 4/2017

Adoptive transfer of autoimmune splenic dendritic cells to lupus-prone mice triggers a B lymphocyte humoral response

Zeitschrift:
Immunologic Research > Ausgabe 4/2017
Autoren:
Daniela Sauma, Natalia Crisóstomo, Camila Fuentes, María Alejandra Gleisner, Yessia Hidalgo, María José Fuenzalida, Mario Rosemblatt, María Rosa Bono
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Electronic supplementary material

The online version of this article (doi:10.​1007/​s12026-017-8936-9) contains supplementary material, which is available to authorized users.
Daniela Sauma and Natalia Crisóstomo contributed equally to this work.

Abstract

Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by increased autoantibody production that leads to multiple tissue injuries. Dendritic cells (DCs) are important orchestrators of immune responses and key components in fine-tuning the balance between tolerance and immunity. However, their role in autoimmune disorders such as SLE remains uncertain. We analyzed the contribution of DCs in triggering SLE by adoptively transferring splenic DCs from aged autoimmune [NZB×NZW]F1 (BWF1) mice to young healthy BWF1 mice. We observed that the transfer of DCs from autoimmune mice to pre-autoimmune mice induced high autoantibody titers in the serum of recipient mice. Moreover, autoimmune DCs from aged BWF1 mice were crucial for the expansion and differentiation of plasmablasts and CD5+ B cells or B1-like cells in the peripheral blood, and spleen of recipient BWF1 mice, a phenomenon that is observed in autoimmune BWF1 mice. On the other hand, DCs from aged BWF1 mice participated in the expansion and differentiation of DCs and IFN-γ-producing T cells. These results reveal that DCs from autoimmune BWF1 mice exhibit functional and phenotypic characteristics that allow them to trigger B cell hyperactivation, as well as DC and T cell expansion and differentiation, thereby promoting an exacerbated humoral response in lupus-prone mice.

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