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2015 ; 10
(3
): e0121319
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S100 calcium-binding protein A6 promotes epithelial-mesenchymal transition
through ?-catenin in pancreatic cancer cell line
#MMPMID25799022
Chen X
; Liu X
; Lang H
; Zhang S
; Luo Y
; Zhang J
PLoS One
2015[]; 10
(3
): e0121319
PMID25799022
show ga
The pathogenesis of pancreatic ductal adenocarcinoma (PDAC) remains poorly
understood. S100 calcium-binding protein A6 (S100A6) has been associated with
PDAC; however, the effect of S100A6 on PDAC migration and invasion has not yet
been explored. In this study, Panc-1 cells were transfected with a plasmid to
induce overexpression of S100A6, and ?-catenin was knocked down using a specific
short hairpin RNA (shRNA). The wound-healing and Transwell assays demonstrated
that S100A6 promoted PDAC cell migration and invasion. Furthermore, ?-catenin
shRNA inhibited the migration and invasion of PDAC cells. We confirmed that
S100A6 induces PDAC cell migration and invasion via activation of ?-catenin in
vitro. Assessment of mRNA and protein levels revealed that S100A6 induces
increased expression of ?-catenin, N-cadherin and vimentin, and decreased
expression of E-cadherin in PDAC cells. ?-catenin shRNA also altered the
expression of epithelial-mesenchymal transition (EMT)-related markers in PDAC
cells. Specifically, expression of E-cadherin was increased, whereas expression
of N-cadherin and vimentin was decreased. Finally, we demonstrated that S100A6
alters the expression of EMT-related markers via ?-catenin activation. In
conclusion, S100A6 induces EMT and promotes cell migration and invasion in a
?-catenin-dependent manner. S100A6 may therefore represent a novel potential
therapeutic target for the treatment of pancreatic cancer.