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  • Title: Downregulation of miR-638 promotes invasion and proliferation by regulating SOX2 and induces EMT in NSCLC.
    Author: Xia Y, Wu Y, Liu B, Wang P, Chen Y.
    Journal: FEBS Lett; 2014 Jun 27; 588(14):2238-45. PubMed ID: 24842609.
    Abstract:
    Aberrant expression of microRNAs has been shown to regulate the biological processes of lung cancer cells. However, the role of miR-638 in the development of NSCLC is still unclear. In this study, low miR-638 and high SOX2 were shown to be associated with tumor size and metastasis of NSCLC patients. Downregulated miR-638 could promote cell invasion and proliferation, while high miR-638 expression reversed the effect. Furthermore, miR-638 could regulate SOX2 by directly binding to its 3'-UTR. Silencing of SOX2 by siRNA partially abolished the enhancement of cell invasion and proliferation induced by downregulated miR-638. Aberrant miR-638 expression could modulate the expression levels of markers of epithelial-to-mesenchymal transition. Our results indicate that miR-638 may play a pivotal role in the development of NSCLC.
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