ABSTRACT
@#[Abstract] Metabolic reprogramming is one of the characteristics of tumors and an important potential target for tumor therapy. The effect of the interaction between tumor and immune cells on metabolic reprogramming is one of the key factors determining the anti-tumor immune response. Tumor metabolism not only plays a key role in maintaining tumor genesis and survival, but also affects immune cells by releasing metabolites such as arginine and PGE2, thereby affecting the tumor immune microenvironment. The interaction between tumor cells and immune cells leads to metabolic competition in the tumor immune microenvironment, which limits the normal metabolism of nutrients and forms an acidic environment, and ultimately leads to a weakened anti-tumor immune response and the formation of an immunosuppressive microenvironment. Moreover, there are alterations in metabolism of immune cells during the process of immune responses, that is metabolic reprogramming occurs in immune cells during their proliferation, differentiation and performance of cellular functions. Therefore, understanding the regulatory mechanism of metabolic reprogramming of tumor cells and immune cells in tumor immune microenvironment will enable researchers to find therapeutic means of targeting metabolic pathways in anti-tumor immunotherapy.