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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2016 ; 7
(ä): 12134
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Treatment of ongoing autoimmune encephalomyelitis with activated B-cell
progenitors maturing into regulatory B cells
#MMPMID27396388
Korniotis S
; Gras C
; Letscher H
; Montandon R
; Mégret J
; Siegert S
; Ezine S
; Fallon PG
; Luther SA
; Fillatreau S
; Zavala F
Nat Commun
2016[Jul]; 7
(ä): 12134
PMID27396388
show ga
The influence of signals perceived by immature B cells during their development
in bone marrow on their subsequent functions as mature cells are poorly defined.
Here, we show that bone marrow cells transiently stimulated in vivo or in vitro
through the Toll-like receptor 9 generate proB cells (CpG-proBs) that interrupt
experimental autoimmune encephalomyelitis (EAE) when transferred at the onset of
clinical symptoms. Protection requires differentiation of CpG-proBs into mature B
cells that home to reactive lymph nodes, where they trap T cells by releasing the
CCR7 ligand, CCL19, and to inflamed central nervous system, where they locally
limit immunopathogenesis through interleukin-10 production, thereby cooperatively
inhibiting ongoing EAE. These data demonstrate that a transient inflammation at
the environment, where proB cells develop, is sufficient to confer regulatory
functions onto their mature B-cell progeny. In addition, these properties of
CpG-proBs open interesting perspectives for cell therapy of autoimmune diseases.