Abstract
Long non-coding RNAs (lncRNAs) play important roles on tumor development and progression in gastric cancer (GC). However, the biological function and regulatory mechanisms of LINC01296 in GC still remain unknown. The objective of this study is to investigate the clinical significance and pathological roles of LINC01296 in GC. Results showed that LINC01296 was up-regulated in GC tissue and correlated with poor prognosis. In vitro, LINC01296 knockdown was up-regulated in GC cells and LINC01296 knockdown suppressed GC cells proliferation, migration and invasion, and promoted apoptosis. In vivo xenograft assays, results showed LINC01296 knockdown significantly inhibited GC tumor growth. Bioinformatics analysis revealed that LINC01296 sponged miR-122, which was proved to target MMP-9. Western blot and RT-PCR showed that LINC01296 was positively correlated with MMP-9 expression, while miR-122 was negatively correlated to it. Overall, results indicate that LINC01296 acts as oncogenic lncRNA in GC carcinogenesis, suggesting the LINC01296/miR-122/MMP-9 regulatory pathway in GC tumorigenesis.
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