We subsequently assessed the capacity of migration and invasion for this GC cell upon Dicer overexpression with wound healing assay and transwell assay, as illustrated in Fig. 1D and F. SGC7901 cells transfected with pCMV-Dicer displayed significantly decreased migration capacity than that of control vector and blank control by wound healing assay (p < 0.01, Fig. 1E). This evidence concerns the gene DICER1 and gastric cancer.