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2018 ; 29
(3
): 216-226
Nephropedia Template TP
gab.com Text
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English Wikipedia
FoxM1 promotes epithelial-mesenchymal transition, invasion, and migration of
tongue squamous cell carcinoma cells through a c-Met/AKT-dependent positive
feedback loop
#MMPMID29360662
Yang H
; Wen L
; Wen M
; Liu T
; Zhao L
; Wu B
; Yun Y
; Liu W
; Wang H
; Wang Y
; Wen N
Anticancer Drugs
2018[Mar]; 29
(3
): 216-226
PMID29360662
show ga
Forkhead box protein M1 (FoxM1) has been associated with cancer progression and
metastasis. However, the function of FoxM1 in tongue squamous cell carcinoma
(TSCC) remains largely unknown. The purpose of this study was to determine the
role of FoxM1 in regulation of epithelial-mesenchymal transition (EMT) and
migration of TSCC cells. We found that FoxM1 induced EMT and increased
invasion/migration capacity in SCC9 and SCC25 cells. FoxM1 stimulation increased
c-Met, pAKT, and vimentin levels but decreased E-cadherin level. Chromatin
immunoprecipitation assay established that FoxM1 is bound to the promoter of
c-Met to activate its transcription. In turn, c-Met promoted the expression of
FoxM1 and pAKT. Blocking AKT signaling attenuated the invasion and migration of
SCC9 and SCC25 cells stimulated by FoxM1 or c-Met. These results indicate that a
positive feedback loop controls the EMT and migration of TSCC cells induced by
FoxM1 and c-Met through AKT. Furthermore, the expression levels of FoxM1, pAKT,
and c-Met were found to significantly increase in TSCC tissues compared with
normal tissues, and these three biomarkers were concomitantly expressed in TSCC
tissues. Clinical association analyses indicated that the expression of FoxM1,
c-Met, and pAKT was associated with clinicopathological characteristics of
patients with TSCC including tumor stage, tumor size, and lymph node metastasis.
Taken together, our findings suggest that FoxM1 promotes the EMT, invasion and
migration of TSCC cells, and cross-talks with c-Met/AKT signaling to form a
positive feedback loop to promote TSCC development.