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2014 ; 176
(3
): 429-37
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Inhibition of farnesyl pyrophosphate synthase prevents angiotensin II-induced
cardiac fibrosis in vitro
#MMPMID24527834
Li Z
; Bi X
; Wang M
; Zhang J
; Song J
; Shen X
; Han J
; Fu G
; Ye Y
Clin Exp Immunol
2014[Jun]; 176
(3
): 429-37
PMID24527834
show ga
Farnesyl pyrophosphate synthase (FPPS)-catalysed isoprenoid intermediates are
important for the activation of Ras homologue gene family, member A (RhoA) in
angiotensin (Ang) II-induced cardiac fibrosis. This study was designed to
investigate the specific role of FPPS in the development of cardiac fibrosis. We
demonstrated that FPPS expression was elevated in both in-vivo and in-vitro
models of Ang II-mediated cardiac fibrosis. FPPS inhibition by zolendronate and
FPPS knock-down by a silencing lentivirus decreased the expression of cardiac
fibrosis marker genes, including collagen I, collagen III and transforming growth
factor (TGF)-?1. FPPS inhibition was reversed by geranylgeraniol (GGOH) and
mimicked by RhoA knock-down with siRhoA. The antagonistic effect of GGOH on the
zolendronate-mediated modulation of RhoA activation in Ang II-stimulated cardiac
fibroblasts was demonstrated by a pull-down assay. Furthermore, FPPS knock-down
also prevented RhoA activation by Ang II?in vitro. In conclusion, FPPS and RhoA
may be part of a signalling pathway that plays an important role in Ang
II-induced cardiac fibrosis in vitro.