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- W4384698220 abstract "Objective: The aim of our present study is to investigate the role of plasmacytoid dendritic cells (pDCs) in the pathogenesis and type I interferon (IFN) signatures in Primary Sjögren’s Syndrome (pSS) patients. Methods: In the present study, we compared the percentage, activation markers, and representative cytokines secretion of pDCs derived from treatment-naive pSS and matched healthy controls (HCs) by flow cytometry. We performed pDC/B co-culture system to explore the contribution of pDC to B cell functions in pSS. Results: The percentage of pDC was significantly reduced in the peripheral blood of pSS. The activation markers (CD80, CD83, and CD86) expressions, chemokine receptors, and representative cytokines production (IFN-α, IL-6, and TNF-α) of pDC were similar between pSS and HCs. Only a few pDCs infiltration were detected in the labial gland. The percentage of pDCs was negatively correlated with serum IgG, IgA, and anti-SSA autoantibody levels and resting pDCs were able to efficiently promote B cells proliferation, activation, differentiation, and antibody production in vitro . However, there was no difference between HC and pSS-derived pDCs. Finally, we found that incubation of plasma from pSS patients could significantly induce pDCs apoptosis than that from HCs and both IgG and IgA dramatically increased the apoptotic rates of pDCs. Conclusion: Our data have deciphered the redundant role of pDC in the type I signature and disease development in pSS. Also, we demonstrated the decreased percentage of pDC in pSS patients might result from apoptosis induced by the excess of immunoglobulin (IgG and IgA)." @default.
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- W4384698220 date "2023-07-18" @default.
- W4384698220 modified "2023-09-23" @default.
- W4384698220 title "The redundant role of plasmacytoid dendritic cells in Primary Sjögren’s syndrome" @default.
- W4384698220 doi "https://doi.org/10.22541/au.168969309.94776946/v1" @default.
- W4384698220 hasPublicationYear "2023" @default.
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