The invention relates to the technical field of
cancer treatment, and provides application of a lactyltransferase inhibitor in
pancreatic cancer and
immunotherapy thereof. According to the present invention, the
histone lactosyltransferase inhibitor and the anti-
programmed death receptor-1
antibody are combined to form the composition for
pancreatic cancer and
immunotherapy thereof, such that the recognition and the removal of the
immune system on the
cancer cells can be enhanced, the growth of the
pancreatic cancer tumor can be effectively inhibited, and the survival time of the pancreatic
cancer patient can be prolonged. The
histone lactosyltransferase inhibitor reduces the infiltration level of tumor-associated neutrophil, increases the infiltration level of CD8 positive T cells, reverses the composition of a pancreatic cancer inhibitory
immune microenvironment, and generates a synergistic anti-tumor effect with an anti-
programmed death receptor-1
antibody. The
traditional Chinese medicine composition is suitable for early-stage, middle-stage and late-stage treatment of pancreatic cancer, improves the
survival rate and the
treatment effect of pancreatic cancer patients, remarkably reduces the side effects of treatment and improves the living quality of the pancreatic cancer patients.