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2015 ; 2015
(ä): 254245
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The Expansion of CD25 high IL-10 high FoxP3 high B Regulatory Cells Is in
Association with SLE Disease Activity
#MMPMID26504851
Vadasz Z
; Peri R
; Eiza N
; Slobodin G
; Balbir-Gurman A
; Toubi E
J Immunol Res
2015[]; 2015
(ä): 254245
PMID26504851
show ga
B regulatory cells (Bregs) belong to a subgroup of activated B cells tasked with
maintaining self-tolerance and preventing autoimmunity. While sharing similar
regulatory mechanisms such as IL-10 dependency, they also defer in exhibiting
their suppressive effects by expressing Fas-Ligand, TGF-beta, and PDL-1. In this
study we show, for the first time, the expansion of CD25(high)FoxP3(high) Bregs
in systemic lupus erythematosus (SLE) patients compared to healthy individuals
(18.5 ± 3.052% versus 11.0 ± 1.654%, p < 0.001, resp.). This expansion was also
shown to correlate with SLE disease activity (r = 0.75). In addition,
CD25(high)FoxP3(high) Bregs were also IL-10(high) expressing and further expanded
when stimulated with semaphorin 3A. In sum we show that CD25(high)FoxP3(high) are
an additional subtype of Bregs, involved in regulating SLE disease activity.
Being IL-10 expressing, we may assume that they are one of the sources of
increased serum IL-10 in SLE patients. Further studies are required in order to
assess the relation between high serum IL-10 and CD25(high)FoxP3(high) Breg
cells.