Grażyna Gromadzka, Beata Tarnacka, Magdalena Cieślik
Aging is a multifactorial process marked by a progressive decline in physiological function and increased vulnerability to diseases such as neurodegeneration, cancer, cardiovascular disorders, and infections. A central feature of aging is inflammaging, a state of chronic low-grade inflammation driven by cellular senescence, mitochondrial dysfunction, and oxidative stress. Recently, two regulated forms of non-apoptotic cell death-ferroptosis and cuproptosis-have emerged as critical mechanisms linking redox imbalance, mitochondrial stress, and disrupted metal homeostasis to age-related pathology. Ferroptosis, an iron-dependent process characterized by lipid peroxidation and impaired glutathione peroxidase 4 (GPX4) activity, and cuproptosis, a copper-dependent mechanism associated with protein lipoylation stress, both intersect with aging-related changes in mitochondrial and metabolic function. Importantly, these two forms of cell death should not be viewed as entirely separate pathways but rather as interconnected axes within a broader metal-redox-metabolic network. Disturbances in copper or iron homeostasis, glutathione (GSH)/GPX4 dysfunction, mitochondrial and iron-sulfur (Fe-S) cluster compromise, and enhanced lipid peroxidation may converge to lower cellular survival thresholds, thereby exacerbating oxidative damage, immune dysfunction, and tissue degeneration and ultimately fueling aging and inflammaging. This review offers a unique integrated perspective that situates ferroptosis and cuproptosis within a unified framework of aging biology, emphasizing their roles in age-related diseases and the therapeutic potential of targeting these pathways through nutritional, pharmacological, and lifestyle interventions.