MTOR and malignant colon neoplasm: This study discussed the changes of metformin on 4EBP1, S6K1, and mTOR in colon cancer cells from the mRNA level and protein level, and confirmed that metformin can further promote cell apoptosis by inhibiting the activity of the mTOR signaling pathway and inhibiting the levels of 4EBP1 and S6K1, showing an obvious dose-dependent effect (58).