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2018 ; 9
(ä): 1525
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Attenuation of Rheumatoid Inflammation by Sodium Butyrate Through Reciprocal
Targeting of HDAC2 in Osteoclasts and HDAC8 in T Cells
#MMPMID30034392
Kim DS
; Kwon JE
; Lee SH
; Kim EK
; Ryu JG
; Jung KA
; Choi JW
; Park MJ
; Moon YM
; Park SH
; Cho ML
; Kwok SK
Front Immunol
2018[]; 9
(ä): 1525
PMID30034392
show ga
Rheumatoid arthritis (RA) is a systemic autoimmune disease caused by both genetic
and environmental factors. Recently, investigators have focused on the gut
microbiota, which is thought to be an environmental factor that affects the
development of RA. Metabolites secreted by the gut microbiota maintain
homeostasis in the gut through various mechanisms [e.g., butyrate, which is one
of the major metabolites of gut microbiota, exerts an anti-inflammatory effect by
activating G-protein-coupled receptors and inhibiting histone deacetylases
(HDACs)]. Here, we focused on the inhibition of the HDACs by butyrate in RA. To
this end, we evaluated the therapeutic effects of butyrate in an animal model of
autoimmune arthritis. The arthritis score and incidence were lower in the
butyrate-treated group compared to the control group. Also, butyrate inhibited
HDAC2 in osteoclasts and HDAC8 in T cells, leading to the acetylation of
glucocorticoid receptors and estrogen-related receptors ?, respectively.
Additionally, control of the T(H)17/T(reg) cell balance and inhibition of
osteoclastogenesis were confirmed by the changes in target gene expression.
Interleukin-10 (IL-10) produced by butyrate-induced expanded T(reg) cells was
critical, as treatment with butyrate did not affect inflammatory arthritis in
IL-10-knockout mice. This immune-cell regulation of butyrate was also detected in
humans. These findings suggest that butyrate is a candidate agent for the
treatment of RA.