Metabolic Memory in Cancer Cells: Unraveling the Long-Term Epigenetic Footprint of Transient Stressors – A Narrative Review

Cancer cells demonstrate remarkable metabolic plasticity, allowing them to adapt and endure under harsh conditions such as nutrient deprivation, hypoxia, and chemotherapy. This plasticity is not merely short-term; it can create a cellular memory that persists. Notably, exposure to stressful conditions can trigger stable epigenetic changes that preprogram cell behavior, enhancing tumor growth, metastasis, and drug resistance. This review examines the phenomenon of metabolic memory in cancer, aiming to explain how temporary stressors lead to long-term epigenetic adaptations that reshape cellular metabolism and phenotype. Key mechanisms include DNA methylation, histone modifications, and non-coding RNAs, all of which contribute to the reprogramming of metabolic pathways. This concept could hold therapeutic potential. Reversing stress-induced remodeling may be possible by focusing on metabolic enzymes or epigenetic regulators. Such strategies could enhance treatment efficacy and reduce the risk of resistance.