Revisiting the role of iron in ferroptosis
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Iron occupies a paradoxical position in biology: indispensable for life through enabling electron transport in metabolism, yet equally capable of driving cellular death. This is exemplified when ferroptosis was defined in 2012 by Dixon and Stockwell (built ...
MoreIron occupies a paradoxical position in biology: indispensable for life through enabling electron transport in metabolism, yet equally capable of driving cellular death. This is exemplified when ferroptosis was defined in 2012 by Dixon and Stockwell (built on parallel work by Marcus Conrad) as a distinct form of regulated cell death. Crucially, ferroptosis is not simply cell death caused by iron poisoning (i.e., iron overload); rather, the ‘dependency of iron’ is evidenced by specific iron chelators that inhibit the induction of death by agents that disrupt cellular redox control (e.g. erastin, which depletes cellular glutathione, and RSL3, which inhibits GPX4 activity, and others). Still, the etymological emphasis on iron does not fully capture the complexity of ferroptosis, which involves a network of potentially lethal metabolic processes encompassing lipids, thiols, and reactive oxygen species. Adding to this tension, recent negative clinical trials of iron chelators in degenerative diseases where ferroptosis has been implicated have tempered enthusiasm for iron-focused strategies and prompted a re-evaluation of iron’s true role in these diseases, and by extension, ferroptosis. In this perspective, we examine the evolving understanding of the ferrum in ferroptosis, its place within the broader metabolic landscape, and its role in neurodegenerative diseases.
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Francesca Alves, ... Scott Ayton
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DOI: https://doi.org/10.70401/fos.2025.0009 - December 31, 2025








