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2017 ; 18
(3
): ä Nephropedia Template TP
gab.com Text
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English Wikipedia
Vanillin Suppresses Cell Motility by Inhibiting STAT3-Mediated HIF-1? mRNA
Expression in Malignant Melanoma Cells
#MMPMID28257048
Park EJ
; Lee YM
; Oh TI
; Kim BM
; Lim BO
; Lim JH
Int J Mol Sci
2017[Mar]; 18
(3
): ä PMID28257048
show ga
Recent studies have shown that vanillin has anti-cancer, anti-mutagenic, and
anti-metastatic activity; however, the precise molecular mechanism whereby
vanillin inhibits metastasis and cancer progression is not fully elucidated. In
this study, we examined whether vanillin has anti-cancer and anti-metastatic
activities via inhibition of hypoxia-inducible factor-1? (HIF-1?) in A2058 and
A375 human malignant melanoma cells. Immunoblotting and quantitative real time
(RT)-PCR analysis revealed that vanillin down-regulates HIF-1? protein
accumulation and the transcripts of HIF-1? target genes related to cancer
metastasis including fibronectin 1 (FN1), lysyl oxidase-like 2 (LOXL2), and
urokinase plasminogen activator receptor (uPAR). It was also found that vanillin
significantly suppresses HIF-1? mRNA expression and de novo HIF-1? protein
synthesis. To understand the suppressive mechanism of vanillin on HIF-1?
expression, chromatin immunoprecipitation was performed. Consequently, it was
found that vanillin causes inhibition of promoter occupancy by signal transducer
and activator of transcription 3 (STAT3), but not nuclear factor-?B (NF-?B), on
HIF1A. Furthermore, an in vitro migration assay revealed that the motility of
melanoma cells stimulated by hypoxia was attenuated by vanillin treatment. In
conclusion, we demonstrate that vanillin might be a potential anti-metastatic
agent that suppresses metastatic gene expression and migration activity under
hypoxia via the STAT3-HIF-1? signaling pathway.