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2018 ; 43
(3
): 760-774
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Paeoniflorin Inhibits Migration and Invasion of Human Glioblastoma Cells via
Suppression Transforming Growth Factor ?-Induced Epithelial-Mesenchymal
Transition
#MMPMID29423667
Wang Z
; Liu Z
; Yu G
; Nie X
; Jia W
; Liu RE
; Xu R
Neurochem Res
2018[Mar]; 43
(3
): 760-774
PMID29423667
show ga
Paeoniflorin (PF) is a polyphenolic compound derived from Radix Paeoniae Alba
thathas anti-cancer activities in a variety of human malignancies including
glioblastoma. However, the underlying mechanisms have not been fully elucidated.
Epithelial to mesenchymal transition (EMT), characterized as losing cell
polarity, plays an essential role in tumor invasion and metastasis. TGF?, a key
member of transforming growth factors, has been demonstrated to contribute to
glioblastoma aggressiveness through inducing EMT. Therefore, the present studies
aim to investigate whether PF suppresses the expression of TGF? and inhibits EMT
that plays an important role in anti-glioblastoma. We found that PF
dose-dependently downregulates the expression of TGF?, enhances apoptosis,
reduces cell proliferation, migration and invasion in three human glioblastoma
cell lines (U87, U251, T98G). These effects are enhanced in TGF? siRNA treated
cells and abolished in cells transfected with TGF? lentiviruses. In addition,
other EMT markers such as snail, vimentin and N-cadherin were suppressed by PF in
these cell lines and in BALB/c nude mice injected with U87 cells. The expression
of MMP2/9, EMT markers, are also dose-dependently reduced in PF treated cells and
in U87 xenograft mouse model. Moreover, the tumor sizes are reduced by PF
treatment while there is no change in body weight. These results indicate that PF
is a potential novel drug target for the treatment of glioblastoma by suppression
of TGF? signaling pathway and inhibition of EMT.