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2016 ; 6
(ä): 28858
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3,6-dihydroxyflavone suppresses the epithelial-mesenchymal transition in breast
cancer cells by inhibiting the Notch signaling pathway
#MMPMID27345219
Chen J
; Chang H
; Peng X
; Gu Y
; Yi L
; Zhang Q
; Zhu J
; Mi M
Sci Rep
2016[Jun]; 6
(ä): 28858
PMID27345219
show ga
The epithelial to mesenchymal transition (EMT) is a critical developmental
program in cancer stem cell (CSC) maintenance and in cancer metastasis. Here, our
study found that 3,6-DHF could effectively inhibit EMT in BC cells in vitro and
in vivo. 3,6-DHF effectively inhibits the formation and proliferation of BCSCs,
and consequently reduces the tumor-initiating capacity of tumor cells in NOD/SCID
mice. Optical in vivo imaging of cancer metastasis showed that 3,6-DHF
administration suppresses the lung metastasis of BC cells in vivo. Further
studies indicated that 3,6-DHF down-regulates Notch1, NICD, Hes-1 and c-Myc,
consequently decreasing the formation of the functional transcriptional unit of
NICD-CSL-MAML, causing Notch signaling inactivation in BC cells. Over-expression
of Notch1 or inhibition of miR-34a significantly reduced the inhibitory effects
of 3,6-DHF on EMT, CSCs, as well as cells migration and invasion in BC cells.
These data indicated that 3,6-DHF effectively inhibits EMT and CSCs, as well as
cells migration and invasion in BC cells, in which miR-34a-mediated Notch1
down-regulation plays a crucial role.