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2018 ; 16
(2
): 1809-1814
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Overexpression of the long noncoding RNA CCAT1 promotes metastasis via
epithelial-to-mesenchymal transition in lung adenocarcinoma
#MMPMID30008869
Lin H
; Cheng W
; Yan H
; Zhang X
Oncol Lett
2018[Aug]; 16
(2
): 1809-1814
PMID30008869
show ga
The long noncoding RNA (lncRNA) colon cancer-associated transcript 1 (CCAT1) has
been identified as an oncogene in multiple types of human malignancy, and the
aberrant expression of CCAT1 has been associated with the tumorigenesis and
progression of cancer. However, the underlying mechanism of how CCAT1 affects
malignant behaviors in lung adenocarcinoma cells remains unknown. In the current
study, the expression of CCAT1 was identified to be increased in lung
adenocarcinoma tissues (n=96) by reverse transcription-quantitative polymerase
chain reaction (RT-qPCR), and its expression level was associated with epidermal
growth factor receptor (EGFR) expression (P=0.011), lymphatic metastasis
(P=0.003) and tumor node metastasis (TNM) stage (P=0.003). In vitro, by using
Transwell assays, the overexpression of CCAT1 was demonstrated to promote the
migration and invasion of H358 lung adenocarcinoma cells; while downregulation of
CCAT1 expression inhibited H1650 cell migration and invasion. Furthermore,
western blot analysis indicated that aberrant CCAT1 expression may induce
epithelial-to-mesenchymal transition (EMT) by regulating the expression levels of
EMT markers (E-cadherin, N-cadherin and vimentin). In conclusion, these results
indicate that CCAT1 is able to promote the metastasis of lung adenocarcinoma
cells by inducing EMT.