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2015 ; 131
(4
): 265-77
Nephropedia Template TP
gab.com Text
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English Wikipedia
Genetic Deletion of the Stromal Cell Marker CD248 (Endosialin) Protects against
the Development of Renal Fibrosis
#MMPMID26633297
Smith SW
; Croft AP
; Morris HL
; Naylor AJ
; Huso DL
; Isacke CM
; Savage CO
; Buckley CD
Nephron
2015[]; 131
(4
): 265-77
PMID26633297
show ga
BACKGROUND: Tissue fibrosis and microvascular rarefaction are hallmarks of
progressive renal disease. CD248 is a transmembrane glycoprotein expressed by key
effector cells within the stroma of fibrotic kidneys including pericytes,
myofibroblasts and stromal fibroblasts. In human disease, increased expression of
CD248 by stromal cells predicts progression to end-stage renal failure. We
therefore, hypothesized that the genetic deletion of the CD248 gene would protect
against fibrosis following kidney injury. METHODS: Using the unilateral ureteral
obstruction (UUO) model of renal fibrosis, we investigated the effect of genetic
deletion of CD248 on post obstructive kidney fibrosis. RESULTS: CD248 null mice
were protected from fibrosis and microvascular rarefaction following UUO.
Although the precise mechanism is not known, this may to be due to a stabilizing
effect of pericytes with less migration and differentiation of pericytes toward a
myofibroblast phenotype in CD248-/- mice. CD248-/- fibroblasts also proliferated
less and deposited less collagen in vitro. CONCLUSION: These studies suggest that
CD248 stromal cells have a pathogenic role in renal fibrosis and that targeting
CD248 is effective at inhibiting both microvascular rarefaction and renal
fibrosis through modulation of pericyte and stromal cell function.