Fig. 2: miR-374a reduces A549 and pc-9 cell proliferation, migration, and invasion in vivo and in vitro

The effect of miR-374a on the growth of A549 and pc-9 cells was examined by a MTT assay, b cell cycle analysis, c colony formation assay, and d EdU incorporation assay. Mean ± SD (n = 3). Scale bars, 100 μm. Excised tumors 20 days after implantation. L (left) NC, R (right) miR-374a (n = 5). e, f The effect of miR-374a on A549 and pc-9 cell migration and invasion was measured by transwell assay and Boyden Chamber assays. Mean ± SD (n = 3). Scale bars, 100 μm. g Representative bioluminescence imaging of the lungs. On day 30, mice receiving transplants of indicated cells were killed and lungs were collected and lung metastases were confimed by H&E staining. Scale bars, 200 μm. Arrows indicate nests of malignant cells. Mean ± SD (n = 3). *P < 0.05