This study will determine whether the cell type-specific effects of ICG-001 and butyrate cotreatment of colorectal cancer cells on apoptosis and cell proliferation are affected by the cross-talk between hyperactivated Wnt signaling and Rb inactivation during cell cycle, mediated by mTOR signaling in a rapamycin-sensitive manner. The gene discussed is RB1; the disease is colorectal cancer.