EZH2 and gastric cancer: In addition, real-time PCR analysis showed that the mRNA levels of EZH2 were significantly decreased by miR-217 overexpression in both the SGC7901 and AGS cells (P < 0.050, Figure 5C); Western blot analysis revealed that the protein levels of EZH2 also markedly decreased upon miR-217 transfection in the gastric cancer cells (Figure 5D).