AR-targeted therapies sensitize prostate cancer to cuproptosis by transcriptionally activating FDX1

accumulation, destabilizes Fe-S cluster proteins, and disrupts mitochondrial metabolism, establishing a procuproptotic state. Functionally, combining AR antagonists with copper ionophores synergistically induces cuproptosis and potently suppresses tumor growth in AR-positive prostate cancer cells, three-dimensional (3D) spheroids, patient-derived organoids, and xenograft models, with minimal systemic toxicity. This synergy is abolished by FDX1 loss or copper chelation, confirming dependence on AR-FDX1 axis activation. Together, these findings uncover FDX1 as a mechanistic effector of AR pathway inhibition and propose a well-tolerated combination strategy that exploits cuproptosis to improve therapeutic responses in prostate cancer.