PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 33915902-9 2021 In addition, metformin treatment increased the expression of monophosphate (AMP)-activated protein kinase (AMPK) and p53 in both HCT116 xenografts and colorectal cancer cell lines and decreased the expression of the urea cycle enzymes, including carbamoyl phosphate synthase 1 (CPS1), arginase 1 (ARG1), ornithine trans-carbamylase (OTC), and ODC. Metformin 13-22 tumor protein p53 Homo sapiens 117-120 33915902-11 2021 These results demonstrate that metformin inhibited CRC cell proliferation via activating AMPK/p53 and that there was an association between metformin, urea cycle inhibition and a reduction in putrescine generation. Metformin 31-40 tumor protein p53 Homo sapiens 94-97