Ferroptosis, a lipid peroxidation-driven form of regulated cell death, has emerged as a central mechanism in neurological disease. While most studies have focused on neuronal vulnerability, non-neuronal cells, including oligodendrocytes, astrocytes, microglia, brain endothelial cells, and central nervous system (CNS) infiltrating T cells, play equally critical roles in shaping disease progression. These cell types regulate iron homeostasis, lipid metabolism, antioxidant defenses, and inflammatory signaling, thereby establishing the microenvironmental conditions that determine ferroptotic susceptibility within the CNS. Accumulating evidence demonstrates lipid peroxidation and ferroptosis-related signaling in demyelinating disorders, ischemic injury, small vessel disease, Alzheimer’s disease, Parkinson’s disease, and spinal cord injury. However, the contribution of non-neuronal cells to ferroptotic stress and execution remains comparatively underexplored. In this review, we synthesize emerging data highlighting cell type-specific dependencies on glutathione peroxidase 4 (GPX4), solute carrier family 7 member 11 (SLC7A11), ferroptosis suppressor protein 1 (FSP1), nuclear factor erythroid 2-related factor 2 (NRF2), peroxiredoxin (PRDX), thioredoxin (TRX), iron-handling proteins, and lipid remodeling pathways, and discuss how these regulatory networks differ across CNS-resident and CNS infiltrating T cells. We propose that ferroptosis in neurological disease is not solely a neuron-autonomous event, but a tissue-level process orchestrated by non-neuronal cells with distinct metabolic and immunological programs. Understanding these cell type-specific vulnerabilities and regulatory mechanisms will be essential for the development of targeted therapeutic strategies aimed at modulating ferroptotic stress in neuroinflammatory and neurodegenerative disorders.

Iron is indispensable for cellular metabolism yet potentially cytotoxic, making its intracellular handling a fundamental determinant of cell fate decisions. The endo-lysosomal system has recently emerged as a central iron rheostat that integrates transferrin uptake, ferritinophagy, and lysosomal iron export to control iron bioavailability for mitochondria and other iron-dependent pathways. Growing studies further show that lysosomal iron is not merely permissive for ferroptosis but can directly initiate lipid damage through localized iron activation, lysosomal lipid peroxidation, and lysosomal membrane permeabilization. At the same time, emerging studies on organelle contact sites reveal that ferroptosis arises from the failure of a coordinated multi-organellar communication system, in which lysosomes, the endoplasmic reticulum, and mitochondria exchange iron, lipids, and redox signals in an effort to metabolically adapt to stress. This perspective is particularly relevant to drug-tolerant persisters and mesenchymal cancer cell states, which rely on rewired lysosomal iron trafficking to sustain plasticity while becoming highly susceptible to ferroptosis. In this minireview, we discuss emerging insights into the spatial organization of iron metabolism and propose a model in which ferroptosis sensitivity depends on the intracellular routing, chemical reactivity, and release dynamics of iron, highlighting lysosomal iron handling as a key therapeutic vulnerability in minimal residual disease.

Ferroptosis is an oxidative form of non-apoptotic cell death that is important for human biology. This process can be induced in cultured cells by at least four structurally and mechanistically distinct classes of ferroptosis inducing (FIN) small molecules. These four classes of FINs are distinguished based on molecular target and mechanism of action. The lethal mechanism of the prototypic oxime-containing class III FIN, FIN56, is unique and poorly understood. FIN56 is proposed to cause ferroptosis by depleting coenzyme Q10 and degrading glutathione peroxidase 4 (GPX4). Curiously, the FIN56 analogs caspase independent lethal 56 (CIL56) and tegavivint also trigger non-apoptotic cell death but not ferroptosis. Tegavivint is a drug candidate currently being tested in humans for the treatment of cancer. Here, we review our understanding of the FIN56 lethal mechanism with a view to guiding future investigations into a privileged chemical scaffold that possesses unusual lethal activity in cancer cells.