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  • Title: miR-200a-3p plays tumor suppressor roles in gastric cancer cells by targeting KLF12.
    Author: Jia C, Zhang Y, Xie Y, Ren Y, Zhang H, Zhou Y, Gao N, Ding S, Han S.
    Journal: Artif Cells Nanomed Biotechnol; 2019 Dec; 47(1):3697-3703. PubMed ID: 31500453.
    Abstract:
    Background: The role of miR-200a-3p in gastric cancer (GC) remain unclear. Materials and methods: miR-200a-3p expression in 65 paired GC and adjacent tissues (AT) were evaluated by quantitative real-time PCR (qRT-PCR) and Western blot. Cell proliferation, cell cycle, and cell migration were assessed by cell growth counting assay, cell cycle analysis, and transwell assay, respectively. The target of miR-200a-3p was analyzed by dual-luciferase reporter assay. Results: miR-200a-3p in GC tissues was significantly reduced compared with AT. miR-200a-3p expression was closely associated with clinicopathological features (P < .05). SGC-7901 cell line demonstrated the lowest level of miR-200a-3p. Cell proliferation and colony formation was significantly inhibited by miR-200a-3p overexpression, but increased by miR-200a-3p knockdown (P < .05). miR-200a-3p upregulation increased the G1/S cell ratio. The 3'-UTR of KLF12 directly interacted with miR-200a-3p. Furthermore, increased levels of KLF12 expression was detected in GC tissues. A correlation analysis suggested a negatively correlation between miR-200a-3p and KLF12 mRNA expressions. Conclusion: miR-200a-3p was down-regulated in GC tissues and was correlated with clinicopathological features. miR-200a-3p overexpression inhibits GC cell proliferation, cell cycle, and cell migration. Furthermore, miR-200a-3p might act as a tumor suppressor in GC by targeting KLF12.
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