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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Exp+Clin+Cancer+Res
2018 ; 37
(1
): 141
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miR-182 suppresses invadopodia formation and metastasis in non-small cell lung
cancer by targeting cortactin gene
#MMPMID29986736
Li Y
; Zhang H
; Gong H
; Yuan Y
; Li Y
; Wang C
; Li W
; Zhang Z
; Liu M
; Liu H
; Chen J
J Exp Clin Cancer Res
2018[Jul]; 37
(1
): 141
PMID29986736
show ga
BACKGROUND: Metastasis is the leading cause of cancer mortality and is a major
hurdle for lung cancer treatment. Invadopodia, which are cancer-specific
protrusive structures, play a crucial role in the metastatic cascade through
degradation of the basement membrane and surrounding stroma. Cortactin, a
critical component of invadopodia, frequently used as an invadopodia marker, a
universally important player in invadopodia function, and is frequently
overexpressed in cancer, but the exact mechanism of regulation is not yet fully
understood. METHODS: The expression level of CTTN in human non-small cell lung
cancer (NSCLC) tissues was detected by qRT-PCR. Cell migration, invasion and
invadopodia formation were assessed in vitro by wound-healing, transwell assay
and immunofluorescence, respectively. The dual-luciferase reporter assay was used
to identify the direct target of miR-182. RESULTS: Hepatocyte growth factor (HGF)
and phorbol 12,13-dibutyrate (PDBu) can induce CTTN expression, motility, and
invasion ability, as well as invadopodia formation in non-small cell lung cancer
(NSCLC). Moreover, miR-182 suppressed metastasis and invadopodia formation by
targeting CTTN in NSCLC. Our qRT-PCR results showed that CTTN expression was
inversely correlated with miR-182 expression that suppressed invadopodia
formation via suppression of the Cdc42/N-WASP pathway. Furthermore, miR-182
negatively regulated invadopodia function, and suppressed extracellular
matrix(ECM) degradation in lung cancer cells by inhibiting cortactin. CONCLUSION:
Collectively, our results demonstrated that miR-182 targeted CTTN gene in NSCLC
and suppressed lung cancer invadopodia formation, and thus suppressed lung cancer
metastasis. This suggests a therapeutic application of miR-182 in NSCLC.