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  • Title: microRNA-137 functions as a tumor suppressor in human non-small cell lung cancer by targeting SLC22A18.
    Author: Zhang B, Liu T, Wu T, Wang Z, Rao Z, Gao J.
    Journal: Int J Biol Macromol; 2015 Mar; 74():111-8. PubMed ID: 25498886.
    Abstract:
    Our previous study demonstrated that the overexpression of solute carrier family 22 member 18 (SLC22A18) in human non-small cell lung cancer (NSCLC) tissues might be associated with tumor progression and patients' prognosis. The aim of this study was to investigate the molecular mechanisms underlying its roles in NSCLC. As a result, bioinformatics analysis and luciferase reporter assay showed that microRNA (miRNA)-137 directly targeted SLC22A18 in NSCLC cells. Then, functional studies indicated that the ectopic expression of miR-137 significantly inhibited NSCLC cell proliferation, invasion and migration by targeting SLC22A18. More importantly, the decreased expression of miR-137 in clinical NSCLC tissues was correlated with advanced TNM stage, positive metastasis and poor prognosis of patients with this malignancy. In conclusion, these findings offer the convincing evidence that the roles of SLC22A18 in NSCLC progression may be partially caused by the regulatory effects of miR-137, which may function as a tumor suppressor. Our clinical data further indicated that miR-137 may be an independent favorable prognostic factor in NSCLC patients.
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