Decreased expression of long non-coding RNA WT1-AS promotes cell proliferation and invasion in gastric cancer

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Abstract

Tumor recurrence and metastasis remain the major obstacles for the successful treatment of patients diagnosed with gastric cancer. In recent years, long non-coding RNAs (lncRNAs) have been considered as key regulators of tumor behavior. In this study, we investigated the expression and biological role of a newly-identified cancer-related lncRNA, WT1-AS. We found that WT1-AS expression was significantly down-regulated in tumor tissues compared to matched adjacent non-tumor tissues. The WT1-AS expression level was also associated with tumor size and the clinicopathological stage. Cell proliferation, migration, and invasion were inhibited, and the proportion of G0/G1 cells increased when WT1-AS was ectopically-expressed in gastric cancer cells. Furthermore, ectopic expression of WT1-AS was demonstrated to inhibit tumor growth and metastasis in vivo. Finally, we found that WT1-AS overexpression could decrease ERK protein phosphorylation. Our study indicates that WT1-AS is significantly down-regulated in gastric cancers and may be correlated with tumor progression.

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Du, T., Zhang, B., Zhang, S., Jiang, X., Zheng, P., Li, J., … Liu, B. (2016). Decreased expression of long non-coding RNA WT1-AS promotes cell proliferation and invasion in gastric cancer. Biochimica et Biophysica Acta - Molecular Basis of Disease, 1862(1), 12–19. https://doi.org/10.1016/j.bbadis.2015.10.001

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