Home Neoplasma 2018 Neoplasma Vol.65, No.3, p.406-414, 2018

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Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

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Neoplasma Vol.65, No.3, p.406-414, 2018

Title: miR-483 is down-regulated in gastric cancer and suppresses cell proliferation, invasion and protein O-GlcNAcylation by targeting OGT
Author: F. Y. YU, C. Y. ZHOU, Y. B. LIU, B. WANG, L. MAO, Y. LI

Abstract: MicroRNAs (miRNAs) are involved in the gastric carcinogenesis and progression. Here, we confirmed that miR-483 was frequently decreased in gastric cancer patients. The expression levels of miR-483 were negatively correlated with tumor stage, node metastasis and stromal invasion. Log-rank tests demonstrated that low expression of miR-483 was strongly correlated with poor overall survival in patients with gastric cancer. Moreover, ectopic expression of miR-483 remarkably suppressed gastric cancer cell proliferation by enhancing cell apoptosis and significantly inhibited the invasion of gastric cancer cells, while low expression of miR-483 exhibited the opposite effect. Bioinformatics analysis revealed that OGT  was a potential target of miR-483, and miR-483 inhibited the expression level of OGT mRNA by direct binding to its 3’-untranslated region (3’UTR). Expression of miR-483 was negatively correlated with OGT in gastric cancer tissues. In addition, modulation of miR-483 expression could affect the global cellular protein O-GlcNAcylation in gastric cancer cells. Furthermore, silencing of OGT counteracted the effects of miR-483 repression, while its overexpression reversed tumor inhibitory effects of miR-483. In conclusion, our study revealed that miR-483 functions as a tumor suppressor by inhibiting proliferation, invasion and protein O-GlcNAcylation of gastric cancer via targeting OGT, and that miR-483 may serve as a prognostic or therapeutic target for gastric cancer.

Keywords: gastric cancer, OGT, miR-483, proliferation, invasion
Published online: 16-May-2018
Year: 2018, Volume: 65, Issue: 3 Page From: 406, Page To: 414
doi:10.4149/neo_2018_170608N411
Price: 21.60 €






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