Abstract
The microRNA miR-452 has been shown to function as a tumor suppressor. However, the cellular mechanism and potential application of miR-452-mediated cancer suppression remain great unknown. This study aims to identify how miR-452 acts in regulating non-small cell lung cancer (NSCLC) proliferation and metastasis. Expression of miR-452 via adenoviral (Ad) vector inhibits the proliferation, invasion, and migration of NSCLC cells A549 or H460. Our data also shows that miR-452 down-regulates the expression of Bmi-1 as well as pro-survival or anti-apoptosis regulators Survivin, cIAP-1, and cIAP-2. By such gene interference, miR-452 modulates NSCLC cell epithelial–mesenchymal transition (EMT) and further disrupts their migration and invasion. Moreover, miR-452 blocks the activation of PI3K/AKT pathway, which is also required for EMT process. These data reveal that miR-452 treatment could be a novel target or strategy for NSCLC treatment.
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Acknowledgments
The authors thank Dr. Yu Cao in Medical College of Georgia, Georgia Regents University, for his helpful advices.
Author contributions
Conceived and designed the experiments: YZ JP. Performed the experiments: JP YW FF. Analyzed the data: QJ. Contributed reagents/materials/analysis tools: JP. Wrote the paper: YZ FF.
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Yongsheng Zhang and Lu Han contributed equally to this work.
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Zhang, Y., Han, L., Pang, J. et al. Expression of microRNA-452 via adenoviral vector inhibits non-small cell lung cancer cells proliferation and metastasis. Tumor Biol. 37, 8259–8270 (2016). https://doi.org/10.1007/s13277-015-4725-z
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DOI: https://doi.org/10.1007/s13277-015-4725-z