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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Acta+Pharmacol+Sin
2014 ; 35
(2
): 219-29
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Therapeutic effects of DZ2002, a reversible SAHH inhibitor, on lupus-prone
NZB×NZW F1 mice via interference with TLR-mediated APC response
#MMPMID24374810
He SJ
; Lin ZM
; Wu YW
; Bai BX
; Yang XQ
; He PL
; Zhu FH
; Tang W
; Zuo JP
Acta Pharmacol Sin
2014[Feb]; 35
(2
): 219-29
PMID24374810
show ga
AIM: To examine the therapeutic effects and underlying mechanisms of DZ2002, a
reversible S-adenosyl-L-homocysteine hydrolase (SAHH) inhibitor, on lupus-prone
female NZB×NZW F1 (NZB/W F1) mice. METHODS: Female NZB/W F1 mice were treated
orally with DZ2002 (0.5 mg·kg(-1)·d(-1)) for 11 weeks, and the proteinuria level
and body weight were monitored. After the mice ware euthanized, serum biochemical
parameters and renal damage were determined. Splenocytes of NZB/W F1 mice were
isolated for ex vivo study. Toll-like receptor (TLR)-stimulated human peripheral
blood mononuclear cells (PBMCs) or murine bone marrow-derived dendritic cells
(BMDCs) were used for in vitro study. RESULTS: Treatment of the mice with DZ2002
significantly attenuated the progression of glomerulonephritis and improved the
overall health. The improvement was accompanied by decreased levels of
nephritogenic anti-dsDNA IgG2a and IgG3 antibodies, serum IL-17, IL-23p19 and
TGF-?. In ex vivo studies, treatment of the mice with DZ2002 suppressed the
development of pathogenic Th17 cells, significantly decreased IL-17, TGF-?, IL-6,
and IL-23p19 production and impeded activation of the STAT3 protein and JNK/NF-?B
signaling in splenocytes. DZ2002 (500 ?mol/L) significantly suppressed TLR
agonists-stimulated up-regulation in IL-6, IL-12p40, TNF-?, and IgG and IgM
secretion as well as in HLA-DR and CD40 expression of dendritic cells among human
PBMCs in vitro. DZ2002 (100 ?mol/L) also significantly suppressed TLR
agonists-stimulated up-regulation in IL-6 and IL-23p19 production in murine
BMDCs, and prevented Th17 differentiation and suppressed IL-17 secretion by the T
cells in a BMDC-T cell co-culture system. CONCLUSION: DZ2002 effectively
ameliorates lupus syndrome in NZB/W F1 mice by regulating TLR signaling-mediated
antigen presenting cell (APC) responses.