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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+Leukoc+Biol
2015 ; 97
(3
): 583-98
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NKG2D ligand overexpression in lupus nephritis correlates with increased NK cell
activity and differentiation in kidneys but not in the periphery
#MMPMID25583577
Spada R
; Rojas JM
; Pérez-Yagüe S
; Mulens V
; Cannata-Ortiz P
; Bragado R
; Barber DF
J Leukoc Biol
2015[Mar]; 97
(3
): 583-98
PMID25583577
show ga
NK cells are a major component of the immune system, and alterations in their
activity are correlated with various autoimmune diseases. In the present work, we
observed an increased expression of the NKG2D ligand MICA in SLE patients'
kidneys but not healthy subjects. We also show glomerulus-specific expression of
the NKG2D ligands Rae-1 and Mult-1 in various murine SLE models, which correlated
with a higher number of glomerular-infiltrating NK cells. As the role of NK cells
in the immunopathogenesis of SLE is poorly understood, we explored NK cell
differentiation and activity in tissues and organs in SLE-prone murine models by
use of diseased and prediseased MRL/MpJ and MRL/lpr mice. We report here that
phenotypically iNK cells accumulate only in the spleen but not in BM or kidneys
of diseased mice. Infiltrating NK cells in kidneys undergoing a lupus nephritic
process showed a more mature, activated phenotype compared with kidney, as well
as peripheral NK cells from prediseased mice, as determined by IFN-? and STAT5
analysis. These findings and the presence of glomerulus-specific NKG2D ligands in
lupus-prone mice identify a role for NK cells and NKG2D ligands in the lupus
nephritic process, which could aid in understanding their role in human SLE.
|Adult
[MESH]
|Aged
[MESH]
|Animals
[MESH]
|Antigens, Ly/metabolism
[MESH]
|Biomarkers/metabolism
[MESH]
|Carrier Proteins/*metabolism
[MESH]
|Cell Differentiation/*immunology
[MESH]
|Female
[MESH]
|Histocompatibility Antigens Class I/*metabolism
[MESH]