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IL-10 Producing B Cells Ability to Induce Regulatory T Cells Is Maintained in Rheumatoid Arthritis.


ABSTRACT: Despite growing evidence highlighting the relevance of increasing IL-10-producing B cells (B10+cells) in autoimmune diseases, their functions in patients are still unknown. The aim of this study was to evaluate the functions of CpG-induced B10+ cells isolated from healthy controls (HC) and rheumatoid arthritis (RA) patients, on naïve T cell differentiation. We demonstrated that CpG-induced B10+ cells from HC drove naïve T cell differentiation toward regulatory T cells (Treg cells) and IL-10-producing T cells (Tr1) through IL-10 secretion and cellular contacts. B10+ cells from HC did not decrease T helper 1 (Th1) nor and tumor necrosis factor ? producing T cell (TNF?+ T cell) differentiation. We showed that in RA, B10+ cells could also induce Treg cells and Tr1 from naïve T cells. Contrary to HC, B10+ cells from RA patients increased naïve T cell conversion into Th1. Interestingly, PD-L2, a programmed death-1 (PD-1) ligand that inhibits PD-L1 and promotes Th1 differentiation, was overexpressed on RA B10+ cells compared to HC B10+ cells. Together, our findings showed that CpG-induced B10+ cells may be used to increase Treg cells in patients with RA. However, CpG may not be the most adequate stimuli as CpG-induced B10+ cells also increased inflammatory T cells in those patients.

SUBMITTER: Mielle J 

PROVIDER: S-EPMC5943500 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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IL-10 Producing B Cells Ability to Induce Regulatory T Cells Is Maintained in Rheumatoid Arthritis.

Mielle Julie J   Audo Rachel R   Hahne Michael M   Macia Laurence L   Combe Bernard B   Morel Jacques J   Daien Claire C  

Frontiers in immunology 20180503


Despite growing evidence highlighting the relevance of increasing IL-10-producing B cells (B10<sup>+</sup>cells) in autoimmune diseases, their functions in patients are still unknown. The aim of this study was to evaluate the functions of CpG-induced B10<sup>+</sup> cells isolated from healthy controls (HC) and rheumatoid arthritis (RA) patients, on naïve T cell differentiation. We demonstrated that CpG-induced B10<sup>+</sup> cells from HC drove naïve T cell differentiation toward regulatory T  ...[more]

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