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Defective CD19+CD24 hi CD38 hi transitional B-cell function in patients with relapsing-remitting MS.
- Source :
- Multiple Sclerosis Journal; Aug2021, Vol. 27 Issue 8, p1187-1197, 11p
- Publication Year :
- 2021
-
Abstract
- Background: Multiple sclerosis (MS) is characterized by central nervous system (CNS) infiltration of T and B cells, excess inflammatory cytokine and chemokine production and failure of immune regulation. CD19+CD24<superscript>hi</superscript>CD38<superscript>hi</superscript> transitional B cells producing interleukin (IL)-10 have been shown to suppress interferon-γ (IFNγ) and tumour necrosis factor-α (TNFα) production by CD4+ T cells and to be dysfunctional in autoimmune arthritis and systemic lupus erythematosus. Objective: We hypothesized that transitional B-cell-dependent immune regulation could be defective in MS and examined their function in healthy subjects and patients with relapsing-remitting multiple sclerosis (RRMS). Methods: A total of 62 healthy donors and 21 RRMS subjects donated peripheral blood for the study. IL-10-producing B cells, IFNγ and TNFα-producing T cells and proliferating T cells were quantified by flow cytometry. Results: In healthy individuals, CD19+CD24<superscript>hi</superscript>CD38<superscript>hi</superscript> transitional B cells produce more IL-10 than CD19+CD24+CD38+ naive and CD19+CD24<superscript>hi</superscript>CD38− memory B cells and are able to suppress CD4+ T-cell proliferation and IFNγ and TNFα-production. In subjects with RRMS, CD19+CD24<superscript>hi</superscript>CD38<superscript>hi</superscript> transitional B cells produce significantly less IL-10 and to fail to suppress effector T-cell function. Conclusion: CD19+CD24<superscript>hi</superscript>CD38<superscript>hi</superscript> transitional B cells physiologically represent the most potent regulatory B-cell subset and are functionally defective in patients with RRMS, an abnormality that may contribute to the immune pathological process. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13524585
- Volume :
- 27
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Multiple Sclerosis Journal
- Publication Type :
- Academic Journal
- Accession number :
- 151079693
- Full Text :
- https://doi.org/10.1177/1352458520951536