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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 J+Exp+Med
2014 ; 211
(11
): 2265-79
Nephropedia Template TP
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English Wikipedia
Specific fibroblastic niches in secondary lymphoid organs orchestrate distinct
Notch-regulated immune responses
#MMPMID25311507
Fasnacht N
; Huang HY
; Koch U
; Favre S
; Auderset F
; Chai Q
; Onder L
; Kallert S
; Pinschewer DD
; MacDonald HR
; Tacchini-Cottier F
; Ludewig B
; Luther SA
; Radtke F
J Exp Med
2014[Oct]; 211
(11
): 2265-79
PMID25311507
show ga
Fibroblast-like cells of secondary lymphoid organs (SLO) are important for tissue
architecture. In addition, they regulate lymphocyte compartmentalization through
the secretion of chemokines, and participate in the orchestration of appropriate
cell-cell interactions required for adaptive immunity. Here, we provide data
demonstrating the functional importance of SLO fibroblasts during Notch-mediated
lineage specification and immune response. Genetic ablation of the Notch ligand
Delta-like (DL)1 identified splenic fibroblasts rather than hematopoietic or
endothelial cells as niche cells, allowing Notch 2-driven differentiation of
marginal zone B cells and of Esam(+) dendritic cells. Moreover, conditional
inactivation of DL4 in lymph node fibroblasts resulted in impaired follicular
helper T cell differentiation and, consequently, in reduced numbers of germinal
center B cells and absence of high-affinity antibodies. Our data demonstrate
previously unknown roles for DL ligand-expressing fibroblasts in SLO niches as
drivers of multiple Notch-mediated immune differentiation processes.