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2017 ; 12
(3
): e0174471
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SnoN upregulation ameliorates renal fibrosis in diabetic nephropathy
#MMPMID28350874
Liu L
; Shi M
; Wang Y
; Zhang C
; Su B
; Xiao Y
; Guo B
PLoS One
2017[]; 12
(3
): e0174471
PMID28350874
show ga
Progressive reduction of SnoN is associated with gradual elevation of TGF-?1
during diabetic nephropathy progression, suggesting SnoN to be a possible
mediator of TGF-?1 signaling, with potential therapeutic benefits against TGF- ?1
-induced renal fibrosis. To characterize SnoN for its role in renal fibrosis, we
assessed SnoN expression patterns in response to high glucose stress, and
evaluated the effects of upregulating SnoN on renal fibrosis. High glucose stress
induced significantly elevated SnoN, TGF-?1, and Arkadia transcription; however,
significantly reduced SnoN protein levels were observed under these conditions.
Upregulating the SnoN protein was achieved by Arkadia knockdown, which resulted
in inhibited high glucose-induced epithelial-mesenchymal transition (EMT) in
renal tubular cells, the onset phase of renal fibrosis. Alternatively, EMT was
suppressed by dominantly expressed exogenous SnoN without interfering with
TGF-?1. Overall, renal SnoN upregulation ameliorates renal fibrosis by relieving
high glucose-induced EMT; these findings support a translational approach
targeting SnoN for the treatment of diabetic nephropathy.