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2017 ; 7
(1
): 15070
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Decoy Wnt receptor (sLRP6E1E2)-expressing adenovirus induces anti-fibrotic effect
via inhibition of Wnt and TGF-? signaling
#MMPMID29118355
Lee WJ
; Lee JS
; Ahn HM
; Na Y
; Yang CE
; Lee JH
; Hong J
; Yun CO
Sci Rep
2017[Nov]; 7
(1
): 15070
PMID29118355
show ga
Aberrant activation of the canonical Wingless type (Wnt) signaling pathway plays
a key role in the development of hypertrophic scars and keloids, and this
aberrant activation of Wnt pathway can be a potential target for the development
of novel anti-fibrotic agents. In this study, we evaluated the anti-fibrotic
potential of a soluble Wnt decoy receptor (sLRP6E1E2)-expressing non-replicating
adenovirus (Ad; dE1-k35/sLRP6E1E2) on human dermal fibroblasts (HDFs), keloid
fibroblasts (KFs), and keloid tissue explants. Higher Wnt3a and ?-catenin
expression was observed in the keloid region compared to the adjacent normal
tissues. The activity of ?-catenin and mRNA expression of type-I and -III
collagen were significantly decreased following treatment with dE1-k35/sLRP6E1E2
in HDFs and KFs. The expression of LRP6, ?-catenin, phosphorylated glycogen
synthase kinase 3 beta, Smad 2/3 complex, and TGF-?1 were decreased in Wnt3a- or
TGF-?1-activated HDFs, following administration of dE1-k35/sLRP6E1E2. Moreover,
dE1-k35/sLRP6E1E2 markedly inhibited nuclear translocation of both ?-catenin and
Smad 2/3 complex. The expression levels of type-I and -III collagen, fibronectin,
and elastin were also significantly reduced in keloid tissue explants after
treatment with dE1-k35/sLRP6E1E2. These results indicate that Wnt decoy
receptor-expressing Ad can degrade extracellular matrix in HDFs, KFs, and primary
keloid tissue explants, and thus it may be beneficial for treatment of keloids.