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2017 ; 18
(1
): 225
Nephropedia Template TP
gab.com Text
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English Wikipedia
The attenuation of renal fibrosis by histone deacetylase inhibitors is associated
with the plasticity of FOXP3(+)IL-17(+) T cells
#MMPMID28693431
Wu WP
; Tsai YG
; Lin TY
; Wu MJ
; Lin CY
BMC Nephrol
2017[Jul]; 18
(1
): 225
PMID28693431
show ga
BACKGROUND: The histone deacetylase (HDAC) inhibitor, which has potential effects
on epigenetic modifications, had been reported to attenuate renal fibrosis.
CD4(+) forkhead box P3 (FOXP3)(+) T regulatory (Treg) cells may be converted to
inflammation-associated T helper 17 cells (Th17) with tissue fibrosis properties.
The association between FOXP3(+)IL-17(+) T cells and the attenuation of renal
fibrosis by the HDAC inhibitor is not clear. METHODS: This study evaluated the
roles of the HDAC inhibitor, Treg cells and their differentiation into Th17
cells, which aggravate chronic inflammation and renal fibrosis in a unilateral
ureteral obstruction (UUO) mouse model. The study groups included control and UUO
mice that were monitored for 7, 14 or 21 days. RESULTS: Juxtaglomerular (JG)
hyperplasia, angiotensin II type 1 receptor (AT1R) expression and lymphocyte
infiltration were observed in renal tissues after UUO but were decreased after
trichostatin A (TSA) treatment, a HDAC inhibitor. The number of CD4(+)FOXP3(+) T
cells increased progressively, along with the number of FOXP3(+)interleukin
(IL)-17(+) T cells, after 14 days, and their numbers then progressively decreased
with increasing CD4(+)IL-17(+) T cell numbers, as demonstrated by double
immunohistochemistry. Progressive renal fibrosis was associated with the loss of
CD4(+)FOXP3(+)IL-17(+) T cells in splenic single-cell suspensions.
FOXP3(+)IL-17(+) T cells expressed TGF-?1 both in vitro and in vivo, and TGF-?1
expression was significantly knockdown by IL-17 siRNA in vitro. These cells were
found to play a role in converting Tregs into IL-17- and TGF-?1-producing cells.
CONCLUSIONS: TSA treatment decreased JG hyperplasia, the percentage of
FOXP3(+)IL-17(+) cells and the degree of fibrosis, suggesting that therapeutic
benefits may result from epigenetic modifications.