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2018 ; 11
(ä): 1929-1939
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Downregulation of miR-542-3p promotes cancer metastasis through activating
TGF-?/Smad signaling in hepatocellular carcinoma
#MMPMID29670368
Zhang T
; Liu W
; Meng W
; Zhao H
; Yang Q
; Gu SJ
; Xiao CC
; Jia CC
; Fu BS
Onco Targets Ther
2018[]; 11
(ä): 1929-1939
PMID29670368
show ga
INTRODUCTION: Hepatocellular carcinoma (HCC) accounts for more than 90% of
primary liver cancer. Although great progress has been made on HCC molecular
mechanism and therapy techniques, the prognosis of HCC patient is poor due to
high metastasis and recurrence. MATERIALS AND METHODS: Expression of miR-542-3p
was quantified by quantitative real-time PCR (qRT-PCR). The role of miR-542-3p in
HCC metastasis was examined using transwell and 3D-culture assay. qRT-PCR,
Western blotting and luciferase reporter assay were used to elucidate the
mechanisms of miR-542-3p-mediated cancer metastasis. RESULTS AND CONCLUSION: In
the research, we found that miR-542-3p is decreased in HCC cell lines and
tissues, and downregulation of miR-542-3p enhances, while upregulation suppresses
HCC cell invasion ability. Further assay demonstrated that miR-542-3p can
directly target TGF-?1 3' untranslated region (3'UTR) to influence TGF-?/Smad
signaling pathway, and suppression of miR-542-3p can hyperactivate TGF-?/Smad
pathway and further to promote Epithelial-Mesenchyme Transition (EMT) and induce
poor prognosis. Lastly, the clinical correlation analysis illustrated that
miR-542-3p is negatively related with the activity of TGF-?1. In summary, our
results find that miR-542-3p takes an important role on HCC progression and
provide more evidence of microRNAs (miRNAs) for cancer therapy.