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Why do powerful cancer immunotherapies work wonders for some patients but fail for others? The answer may lie not just in the cancer cells themselves, but in the energy levels of our own immune warriors. T cells, the elite soldiers of our immune system, often run out of steam in the hostile environment of a tumor, a phenomenon known as 'exhaustion.' But what if we could recharge their batteries? Emerging research reveals that the metabolic fitness of T cells—specifically the health of their mitochondria—is a critical battleground in the war on cancer, and scientists are now learning how to turn the tide. Introduction Our immune system is constantly on patrol, with CD8+ T cells acting as spec …

In the intricate dance between the immune system and cancer, tumors often deploy cunning strategies to evade destruction. A groundbreaking 2025 study in Nature has unveiled a startling new tactic: cancer cells transfer their damaged mitochondria to immune cells, effectively sabotaging their ability to fight back. This discovery opens a new frontier in our understanding of immune evasion and presents exciting possibilities for the next generation of cancer immunotherapies. Introduction The tumor microenvironment (TME) is a complex battlefield where cancer cells and immune cells vie for dominance. A key player in this struggle is the tumor-infiltrating lymphocyte (TIL), a type of T cell that …