Abstract
Accumulating evidence has demonstrated that long non-coding RNAs (lncRNAs) are frequently overexpressed in colorectal cancer (CRC). However, few related lncRNA signatures have been established for predicting CRC metastasis. The purpose of the present study was to identify lncRNAs that serve key roles in the metastasis of human CRC, and their potential downstream targets. A total of 31 human CRC biopsy samples were collected, and the expression of long intergenic non-protein coding RNA-467 (linc00467) and its association with clinical characteristics were evaluated. Consequently, linc00467 was revealed to be overexpressed in human CRC tissues, and its expression was significantly associated with metastasis and Tumor-Node-Metastasis stage. In HT29 and HCT116 cells, linc00467-knockout was revealed to decrease cellular proliferation and increase apoptosis (P<0.05). Finally, the downstream target of linc00467 in CRC promotion was predicted using bioinformatics analysis. The results demonstrated that linc00467 targets and regulates the expression of microRNA (miR)-451a, promoting carcinogenesis and metastasis in CRC. In conclusion, the results of the present study indicate that increased linc00467 expression promotes metastasis by targeting miR-451a, which ultimately increases cellular proliferation and inhibits apoptosis in human CRC cells.
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