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2016 ; 2016
(ä): 5126560
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Expression of Wnt/?-Catenin Signaling Pathway and Its Regulatory Role in Type I
Collagen with TGF-?1 in Scleral Fibroblasts from an Experimentally Induced Myopia
Guinea Pig Model
#MMPMID27247798
Li M
; Yuan Y
; Chen Q
; Me R
; Gu Q
; Yu Y
; Sheng M
; Ke B
J Ophthalmol
2016[]; 2016
(ä): 5126560
PMID27247798
show ga
Background. To investigate Wnt/?-catenin signaling pathway expression and its
regulation of type I collagen by TGF-?1 in scleral fibroblasts from
form-deprivation myopia (FDM) guinea pig model. Methods. Wnt isoforms were
examined using genome microarrays. Scleral fibroblasts from FDM group and
self-control (SC) group were cultured. Wnt isoforms, ?-catenin, TGF-?1, and type
I collagen expression levels were examined in the two groups with or without
DKK-1 or TGF-?1 neutralizing antibody. Results. For genome microarrays, the
expression of Wnt3 in FDM group was significantly greater as confirmed in retinal
and scleral tissue. The expression of Wnt3 and ?-catenin significantly increased
in FDM group and decreased significantly with DKK-1. TGF-?1 expression level
decreased significantly in FDM group and increased significantly with DKK-1.
Along with morphological misalignment inside and outside cells, the amount of
type I collagen decreased in FDM group. Furthermore, type I collagen increased
and became regular in DKK-1 intervention group, whereas it decreased and
rearranged more disorder in TGF-?1 neutralizing antibody intervention group.
Conclusions. The activation of Wnt3/?-catenin signaling pathway was demonstrated
in primary scleral fibroblasts in FDM. This pathway further reduced the
expression of type I collagen by TGF-?1, which ultimately played a role in
scleral remodeling during myopia development.