Metabolic Reprogramming and Tumor Immune Evasion in Oral Cancer from Molecular Mechanisms to Precision Therapeutic Strategies

Abstract

Oral cancer remains a major health problem worldwide with poor clinical outcomes in patients diagnosed at advanced stages. Metabolic reprogramming is an important feature of oral cancer development and supports the growth and survival of malignant cells under changing tumor conditions. Oral cancer cells show increased glucose utilization and altered lipid metabolism. These changes provide energy and metabolic intermediates required for continuous tumor growth. At the same time the tumor microenvironment strongly influences cancer cell metabolism and immune function. Hypoxia, nutrient limitation, and interactions with stromal cells can promote an immunosuppressive environment that supports tumor progression. Metabolic changes within cancer cells can also affect immune cell activity and reduce effective antitumor responses. This interaction between tumor metabolism and immune regulation contributes to immune escape and may influence therapeutic resistance. Recent studies have identified several metabolic pathways and immune regulatory mechanisms that may serve as potential therapeutic targets. Approaches targeting glycolysis, lipid metabolism, and immunosuppressive pathways are being investigated for oral cancer treatment. This review discusses the major metabolic alterations associated with oral cancer and their influence on tumor immune evasion. It further examines the interaction between cancer metabolism and the tumor microenvironment and highlights emerging therapeutic strategies. Understanding these metabolic and immune interactions may support the development of more effective precision therapeutic approaches for oral cancer.