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?:abstract
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Objective: To study the biological function of circular RNA RNF13 (circRNF13) in acute myeloid leukemia (AML) and its relationship with prognosis. Methods: We constructed stable AML cell lines with downregulated expression of circRNF13, and then, we explored the effect of downregulation of circRNF13 expression on the proliferation, migration, and invasion through qRT-PCR, MTT curve, colony formation, transwell migration and invasion experiment, cell cycle, apoptosis, Caspase 3/7 assay, and other experiments. We also studied the expression of C-myc and Tenascin-C by qRT-PCR to explore the role of circRNF13. Results: When the expression of circRNF13 was downregulated, the proliferation rate of AML cells decreased significantly, the cell cycle was blocked to G1 phase, and apoptosis rate increased significantly. C-myc related to cell proliferation decreased significantly at RNA level. Furthermore, when the expression of circRNF13 was downregulated, the migration and invasion ability of AML cells was significantly reduced, and the expression of Tenascin-C related to migration and invasion also decreased significantly. The luciferase reporter assay system confirmed that miRNA-1224-5p was the direct target of circRNF13. Conclusion: CircRNF13 inhibited the proliferation, migration, and invasion of AML cells by regulating the expression of miRNA-1224-5p. This study provides some clues for the diagnosis and treatment of AML.
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