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Sökning: WFRF:(Klocke R)

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11.
  • Yang, M., et al. (författare)
  • Regulatory T cells control epitope spreading in autoimmune arthritis independent of cytotoxic T-lymphocyte antigen-4 VOL EA, 1995, IMMUNITY, V3, P541
  • 2018
  • Ingår i: Immunology. - : Wiley. - 0019-2805 .- 1365-2567. ; 155:4, s. 446-457
  • Tidskriftsartikel (refereegranskat)abstract
    • CD4(+) Foxp3(+) regulatory T (Treg) cells can control both cellular and humoral immune responses; however, when and how Treg cells play a predominant role in regulating autoimmune disease remains elusive. To deplete Treg cells in vivo at given time-points, we used a mouse strain, susceptible to glucose-6-phosphate isomerase peptide-induced arthritis (GIA), in which the deletion of Treg cells can be controlled by diphtheria toxin treatment. By depleting Treg cells in the GIA mouse model, we found that a temporary lack of Treg cells at both priming and onset exaggerated disease development. Ablation of Treg cells led to the expansion of antigen-specific CD4(+) T cells including granulocyte-macrophage colony-stimulating factor, interferon-gamma and interleukin-17-producing T cells, and promoted both T-cell and B-cell epitope spreading, which perpetuated arthritis. Interestingly, specific depletion of cytotoxic T-lymphocyte antigen-4 (CTLA-4) on Treg cells only, was sufficient to protect mice from GIA, due to the expansion of CTLA-4(-) Treg cells expressing alternative suppressive molecules. Collectively, our findings suggest that Treg cells, independently of CTLA-4, act as the key driving force in controlling autoimmune arthritis development.
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