The invention discloses a tumor immunization method combining with chimeric
antigen T cells targeting at PD-1 (
programmed cell death protein 1) and EGFR (
epidermal growth factor receptor) and also discloses a
plasmid vector for implementing the method. In combination with fourth-generation CAR-T (
chimeric antigen receptor T) cells targeting at PD-1 and EGFR, a lentiviral vector is used as a CAR-
T vector basic structure, and truncated
EGFR antibody is selected as a CAR core to give
tumor targeted enrichment to play, tumor-killing effect is given to play in conformity with overexpressed
immune checkpoint inhibitor PD-1
monoclonal antibody; by constructing the fourth-generation CAR-
T vector for co-expressing various regulatory factors such as IL21, CCR4 and Bcl2, the killing, homing and persistent proliferating abilities of CAR-T cells are improved. EP-CAR T (esophageal
papilloma chimeric antigen receptor T) cells are treated by transducing patient's autologous T-lymphocytes
in vitro, amplifying suitably and transducing back to the patient's body via autologous transfusion, and no reports on similar designs of CAR-T cells are provided at present.