BACKGROUND AND AIM:To investigate the effects of RNAi targeted to STAT3 on apoptosis induction and on STAT3 signaling in human hepatocellular carcinoma cell line SMMC7721.The research provided theoretical and experimental basis for further development and clinical application of targeting STAT3 signaling pathway therapy for cancer.MATERIALS AND METHODS:Applying RNAi technique to specifically silence STAT3 gene in SMMC7721 cells,and expression of STAT3 protein in cells was determined by Western blot.Effect o...