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2017 ; 11
(ä): 969-983
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Decitabine reverses TGF-?1-induced epithelial-mesenchymal transition in
non-small-cell lung cancer by regulating miR-200/ZEB axis
#MMPMID28405157
Zhang N
; Liu Y
; Wang Y
; Zhao M
; Tu L
; Luo F
Drug Des Devel Ther
2017[]; 11
(ä): 969-983
PMID28405157
show ga
OBJECTIVE: Epithelial-mesenchymal transition (EMT) is a crucial driver of tumor
progression. Tumor growth factor-beta 1 (TGF-?1) is an important factor in EMT
induction in tumorigenesis. The targeting of EMT may, therefore, represent a
promising approach in anticancer treatment. METHODS: In this study, we determined
the effect of decitabine, a DNA methyltransferase inhibitor, on TGF-?1-induced
EMT in non-small-cell lung cancer (NSCLC) PC9 and A549 cells. We also assessed
the involvement of the miR-200/ZEB axis. RESULTS: Decitabine reversed
TGF-?1-induced EMT in PC9 cells, but not in A549 cells. This phenomenon was
associated with epigenetic changes in the miR-200 family, which regulated EMT by
altering the expression of ZEB1 and ZEB2. TGF-?1 induced aberrant methylation in
miR-200 promoters, leading to EMT in PC9 cells. Decitabine attenuated this effect
and inhibited tumor cell migration in vitro and in vivo. In A549 cells, however,
neither TGF-?1 nor decitabine exhibited an effect on miR-200 promoter
methylation. CONCLUSION: Our findings suggest that epigenetic regulation of the
miR-200/ZEB axis is responsible for EMT induction by TGF-?1 in PC9 cells.
Decitabine inhibits EMT in NSCLC cell PC9 through its epigenetic-based
therapeutic activity.
|Animals
[MESH]
|Antineoplastic Agents/administration & dosage/*pharmacology/therapeutic use
[MESH]
|Azacitidine/administration & dosage/*analogs &
derivatives/pharmacology/therapeutic use
[MESH]