Fig. 5From: Metformin sensitizes sorafenib to inhibit postoperative recurrence and metastasis of hepatocellular carcinoma in orthotopic mouse modelsMetformin synergized with sorafenib to suppress angiogenesis, proliferation, and EMT but promote apoptosis in vivo. Representative images of tumor sections were stained with antibody against CD31, Ki67, and TUNEL (magnification ×200). a Metformin in combination with sorafenib synergistically minimized both Ki67 and CD31 expression but promoted TUNEL expression. b Combined therapy inhibited EMT at protein level which lysated from the tumor tissue, and pAMPK expression was elevated both in metformin group and combined treatment groups. c Combined treatment of metformin and sorafenib suppressed HIF-2α protein expression but upregulated TIP30 protein expression evaluated by Western blotBack to article page