FERRITIN NANOCAGE FUSED WITH PD-L1-BINDING PEPTIDE 1 AND USE THEREOF AS ANTICANCER IMMUNOTHERAPY AGENT

The present invention relates to a ferritin nanocage fused with PD-L1-binding peptide 1 and a use thereof as an anticancer immunotherapy agent. Prepared in the present invention were nanocages that are formed by fusing a human ferritin monomer with a peptide 1 (PD-L1pep1: CLQKTPKQC) binding to the immune checkpoint receptor PD-L1 overexpressed in many cancers such as breast cancer, colorectal cancer, renal cancer, glioblastoma, etc. and which display 24 Pd-L1prep1. The nanocages of the present invention effectively target colorectal cancer tissues to exhibit an anticancer effect. When loading the anticancer agent doxorubicin thereinto, the nanocages showed higher anticancer effects than the same dose of PD-L1 antibody. Accordingly, the nanocages are expected as a next-generation drug that surmounts the limitation of immune checkpoint blocking therapy using antibodies.