Combinatorial Antitumor Effects of Amino Acids and Epigenetic Modulations in Hepatocellular Carcinoma Cell Lines

HepG2 and Huh7 cells were treated with different concentrations of L-leucine, L-glutamine, or L-methionine and cell viability was determined using MTT assay. Insulin-like growth factor 1, phosphorylated ribosomal protein S6 kinase, p53, and cyclin D1 protein levels were assayed using ELISA.