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2016 ; 7
(24
): 37177-37191
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Mouse double minute 2 (MDM2) upregulates Snail expression and induces
epithelial-to-mesenchymal transition in breast cancer cells in vitro and in vivo
#MMPMID27184007
Lu X
; Yan C
; Huang Y
; Shi D
; Fu Z
; Qiu J
; Yin Y
Oncotarget
2016[Jun]; 7
(24
): 37177-37191
PMID27184007
show ga
The oncogene, mouse double minute 2 (MDM2), has been implicated in the
pathogenesis of numerous cancers. In this study, we investigated the role of MDM2
in epithelial-to-mesenchymal transition (EMT) and the underlying mechanisms in
breast cancer cells in vitro and in vivo. The results showed that up-regulation
of MDM2 in MCF-7 cells altered the cell morphology to a mesenchymal phenotype.
Knockdown of MDM2 in MDA-MB-231 cells altered the cell morphology to the
epithelial phenotype. In addition, overexpression of MDM2 increased the
expression of N-cadherin and Vimentin and decreased the expression of E-cadherin,
at both the mRNA and protein levels, in vitro and in vivo. Conversely,
down-regulation of MDM2 decreased the expression of N-cadherin and Vimentin, and
increased the expression of E-cadherin in vitro. Furthermore, MDM2 up-regulated
both the mRNA and protein expression of Snail in vitro and in vivo. Knockdown of
Snail almost abolished MDM2 induced EMT in vitro. Finally, we found that MDM2
expression correlated with EMT markers and Snail: Snail expression was inversely
associated with E-cadherin in human breast cancer samples. Our findings
demonstrated that MDM2 induces EMT by enhancing Snail expression in vitro and in
vivo. Thus, MDM2 may be a potential target for therapy against human metastatic
breast cancer.