A Phase I/II Study of Active Immunotherapy With Cancer Stem Cells Vaccine for Colorectal Cancer

To assess the feasibility of generating CSC-loaded DC vaccines for clinical use, the investigators will harvest peripheral blood and tumor specimen from patients with colorectal cancer. The investigators will purify T, B cells and generate DCs from the PBMCs of the colorectal cancer patient.On the other hand, investigators will isolate ALDHhigh and ALDHlow tumor cells from the tumor specimen of the colorectal cancer patient using a similar protocol as investigators reported . Aim 1: To demonstrate, in vitro, the relative cellular anti-colorectal cancer CSC immunity induced by colorectal cancer CSC-DC primed cytotoxic T cells. Aim 2: To determine, in vitro, specific binding and lysis of colorectal cancer CSCs by antibodies produced by purified B cells from PBMCs stimulated with colorectal cancer CSC-DC.