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Background/Aim: Patients with advanced non-small cell lung cancer (NSCLC) frequently face a dismal prognosis because of lack of curative therapies. We, therefore, conducted a preclinical investigation of the therapeutic efficacy of microRNA-107 (miR-107). Materials and Methods: The effects of miR-107 on cell proliferation and target gene expression were studied. Combinatorial effects of miR-107 and parthenolide were evaluated. Results: Cell proliferation was repressed in A549 NSCLC cells transfected with miR-107. Inhibitor of nuclear factor kappa B kinase subunit gamma was directly targeted by miR-107. Overexpression of miR-107 in A549 cells sensitized them to parthenolide along with a marked reduction of cyclindependent kinase 2. Conclusion: Our findings unveil an important biological function of miR-107 in regulating lung cancer cell proliferation and elevating an antiproliferative effect of parthenolide on lung cancer cells, suggesting that miR-107 could be beneficial benefit treatment for advanced NSCLC.

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