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2015 ; 15
(ä): 85
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microRNA-30b inhibits cell invasion and migration through targeting collagen
triple helix repeat containing 1 in non-small cell lung cancer
#MMPMID26388700
Chen S
; Li P
; Yang R
; Cheng R
; Zhang F
; Wang Y
; Chen X
; Sun Q
; Zang W
; Du Y
; Zhao G
; Zhang G
Cancer Cell Int
2015[]; 15
(ä): 85
PMID26388700
show ga
BACKGROUND: Non-small cell lung cancer (NSCLC) is the largest histological
subgroup of lung cancer and has increased in prevalence in China over the past
5 years. The 5-year survival rate has remained at 15-20 %, with a median survival
of 8-12 months. The tumorigenesis and progression of NSCLC is orchestrated by
numerous oncogene and anti-oncogene mutations and insights into microRNA function
have increased our understanding of the process. Here, we investigated the
effects of miR-30b on NSCLC cell invasion and migration and explored the
underlying molecular mechanisms involved. METHODS: Quantitative reverse
transcription PCR, wound healing assay, trans-well assays, western blotting and
dual luciferase assays were performed to investigate the molecular mechanisms of
miR-30b in NSCLC cells. RESULTS: MiR-30b was down-regulated and Cthrc1
up-regulated in NSCLC tissues. Both were associated with tumor differentiation,
TNM stage and lymph node metastases. Up-regulation of miR-30b restricted A549 and
Calu-3 cell invasion and migration. Additionally, the expression of Cthrc1,
matrix metalloproteinase-9 and matrix metalloproteinase-2 was reduced, while
metallopeptidase inhibitor-1 expression increased. Bioinformatics analysis
identified Cthrc1 as a target of miR-30b and western blotting and luciferase
reporter assays confirmed that miR-30b regulates Cthrc1 by directly binding to
its 3'UTR. Transfection of Cthrc1 without the 3'UTR restored the miR-30b
inhibiting cell invasion. Up-regulation of miR-30b or down-regulation of Cthrc1
had potential significance in the invasion and metastasis of NSCLC. CONCLUSIONS:
MiR-30b was down-regulated and Cthrc1 up-regulated in NSCLC tissues. Both of them
were related to tumor differentiation, TNM stage and lymph node metastases.
MiR-30b affected NSCLC cells invasion and migration by regulating Cthrc1.