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  • Title: MicroRNA-204 inhibits cell proliferation in T-cell acute lymphoblastic leukemia by down-regulating SOX4.
    Author: Yin JJ, Liang B, Zhan XR.
    Journal: Int J Clin Exp Pathol; 2015; 8(8):9189-95. PubMed ID: 26464665.
    Abstract:
    BACKGROUND: MicroRNAs (miRNAs) are a group of small non-coding RNAs that play important roles in the pathogenesis of human diseases by negatively regulating gene expression. The aim of this study was to explore the effect of miR-204 on cell proliferation migration and invasion in T-cell acute lymphoblastic leukaemia (T-ALL). METHOD: miR-204 expression was determined in bone marrow samples from 32 leukemia patients and 32 healthy controls by quantitative real-time PCR (qRT-PCR). The effect of miR-204 on cell proliferation was evaluated by CCK8 assay, cell migration and invasion were evaluated by transwell migration and invasion assays, In addition, the regulation of SOX4 by miR-204 was evaluated by luciferase reporter assay and western blot. RESULTS: our results revealed that miR-204 was low expressed in T-ALL. Cell proliferation assay showed that the cell proliferation ability was inhibited by miR-204 mimics. Moreover, migration and invasion assay suggested that overexpression of miR-204 could significantly suppressed the migration and invasion ability of T-ALL cells. Luciferase reporter assay confirmed that miR-204 directly bound to the 3' untranslated region of SOX4, and western blot suggested that miR-204 inhibited the expression of SOX4 at the protein levels. CONCLUSIONS: Our findings indicated that miR-204 negatively regulates SOX4 and inhibited proliferation, migration and invasion of T-ALL cell lines. Thus, miR-204 might represent a potential therapeutic target for T-ALL intervention.
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