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2016 ; 5
(ä): 1-7
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Up-regulation of Syndecan-4 contributes to TGF-?1-induced epithelial to
mesenchymal transition in lung adenocarcinoma A549 cells
#MMPMID28955801
Toba-Ichihashi Y
; Yamaoka T
; Ohmori T
; Ohba M
Biochem Biophys Rep
2016[Mar]; 5
(ä): 1-7
PMID28955801
show ga
Syndecan-4 (SDC4) is a cell-surface proteoglycan associated with cell adhesion,
motility, and intracellular signaling. Here, we present that SDC4 functions as a
positive regulator of the transforming growth factor (TGF)-?1-induced epithelial
to mesenchymal transition (EMT) via Snail in lung adenocarcinoma, A549 cells.
TGF-?1 up-regulated the expression of SDC4, accompanied by the induction of EMT.
Wound-healing and transwell chemotaxis assay revealed that SDC4 promoted cell
migration and invasion. SDC4 knockdown recovered the E-cadherin and decreased
vimentin and Snail expression in EMT-induced A549 cells. However, depletion of
SDC4 resulted in little change of the Slug protein expression and mesenchymal
cell morphology induced by TGF-?1. The double knockdown of SDC-4 and Slug was
required for reversal of epithelial morphology; it did not occur from the SDC4
single knockdown. These findings suggest that Snail is a transcriptional factor
downstream of SDC4, and SDC4 regulates TGF-?1-induced EMT by cooperating with
Slug. Our data provide a novel insight into cellular mechanisms, whereby the
cell-surface proteoglycan modulated TGF-?1-induced EMT in lung adenocarcinoma,
A549 cells.