The application of N-lactoyl
phenylalanine in the preparation of a
drug for treating tumors belongs to the technical field of
medicine. The
structural formula of the N-lactoyl
phenylalanine is. The
drug plays a role by regulating
T cell activation,
gene profile changes related to
effector function, promoting CD8 +
T cell activation, and enhancing the
secretion of killing effectors. N-lactoyl
phenylalanine can be used in combination with an
immune checkpoint inhibitor. The present application first provides a novel use of N-lactoyl phenylalanine (Lac-Phe) as an anti-tumor
drug, and determines that the compound is one of the core functional molecules mediating the anti-tumor effect of exercise; and simultaneously first discloses the core action mechanism of Lac-Phe in enhancing CD8 +
T cell activation, promoting
effector secretion, and improving anti-tumor immune response, which can significantly optimize the
efficacy of existing tumor
immunotherapy, fill many gaps in the prior art, and have important scientific innovation value and high clinical conversion application prospect.