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2016 ; 6
(ä): 33676
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Silencing of Histone Deacetylase 9 Expression in Podocytes Attenuates Kidney
Injury in Diabetic Nephropathy
#MMPMID27633396
Liu F
; Zong M
; Wen X
; Li X
; Wang J
; Wang Y
; Jiang W
; Li X
; Guo Z
; Qi H
Sci Rep
2016[Sep]; 6
(ä): 33676
PMID27633396
show ga
Podocyte dysfunction is important in the onset and development of diabetic
nephropathy (DN). Histone deacetylases (HDACs) have been recently proved to play
critical roles in the pathogenesis of DN. As one subtype of the class IIa HDACs,
HDAC9 is capable to repress/de-repress their target genes in tumor, inflammation,
atherosclerosis and metabolic diseases. In the present study, we investigate
whether HDAC9 is involved in the pathophysiologic process of DN, especially the
podocyte injury. Firstly, we explored the expression patterns and localization of
HDAC9 and found that HDAC9 expression was significantly up-regulated in high
glucose (HG)-treated mouse podocytes, as well as kidney tissues from diabetic
db/db mice and patients with DN. Secondly, knockdown of HDAC9 in mouse podocytes
significantly suppressed HG-induced reactive oxygen species (ROS) generation,
cell apoptosis and inflammation through JAK2/STAT3 pathway and reduced the
podocytes injury by decreasing the expression levels of Nephrin and Podocin.
Moreover, in diabetic db/db mice, silencing of HDAC9 attenuated the
glomerulosclerosis, inflammatory cytokine release, podocyte apoptosis and renal
injury. Collectively, these data indicate that HDAC9 may be involved in the
process of DN, especially podocyte injury. Our study suggest that inhibition of
HDAC9 may have a therapeutic potential in DN treatment.