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Hum Cell. 2014 Jul;27(3):95-102. doi: 10.1007/s13577-013-0085-4. Epub 2013 Nov 17.

miR-137 impairs the proliferative and migratory capacity of human non-small cell lung cancer cells by targeting paxillin.

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Department of Respiratory Medicine, The Affiliated Hospital of Binzhou Medical University, Binzhou, 256603, Shandong, People's Republic of China.


Human lung cancer is the leading cause of cancer motility worldwide, with nearly 1.4 million deaths each year, among which non-small cell lung cancer (NSCLC) accounts for almost 85% of this disease. The discovery of microRNAs (miRNAs) provides a new avenue for NSCLC diagnostic and treatment regiments. Currently, a large number of miRNAs have been reported to be associated with the progression of NSCLC, among which serum miR-137 has been examined to be down-regulated in NSCLC patients. However, the function of miR-137 on NSCLC cells migration and invasion and the relative mechanisms were less known. Here, we found that ectopic expression of miR-137 could inhibit cell proliferation, induce cell apoptosis, and suppress cell migration and invasion in NSCLC cell line A549. Moreover, we found that paxillin (PXN) was a target gene of miR-137 in NSCLC cells and restored expression of PXN abolished the miR-137-mediated suppression of cell migration and invasion. Taken together, our results showed that miR-137 acted as a tumor suppressor in NSCLC by targeting PXN, and it may provide novel diagnostic and therapeutic options for human NSCLC clinical operation in future.

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