MMP14 and gastric cancer: Western blot, real-time quantitative RT-PCR, and dual-luciferase assays demonstrated that over-expression or knockdown of miR-337-3p decreased and increased the protein and transcript levels of MMP-14 in gastric cancer cells, than those transfected with empty vector (mock) or negative control (anti-NC) inhibitor, respectively (Figure 3D–3G, Supplementary Figure S2A and S2B).