The invention provides application of pentenedioic acid (GC) in enhancing the anti-tumor effect of T cells through metabolic
reprogramming, and belongs to the technical field of biological
medicine. It is found that in the tumor development process, GC is supplemented in an exogenous mode,
tumor growth can be rapidly inhibited, and the anti-tumor effect depends on a TME regulation and control mechanism. Through GC treatment, the TME immune landscape can be significantly remodeled; gC treatment not only can enhance the
effector function of the CD8 + T cells, but also can
delay the depletion process of the CD8 + T cells; and the infiltration CD8 + T cells in the tumor of the GC treatment group are obviously increased. Particularly, after the CD8-resistant
antibody is used for removing mouse CD8 + T cells, the anti-tumor effect of GC completely disappears, and it is confirmed that the
tumor inhibition effect depends on the CD8 + T cells. Therefore, the invention proves that the
lysine catabolic
metabolite GC, as an immunostimulatory
metabolite, can shape the immune activated TME by reactivating the functions of tumor infiltrating CD8 + T cells.