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The critical role of mitochondrial lipid peroxidation in ferroptosis: insights from recent studies

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Abstract

Ferroptosis is a regulated form of necrotic cell death reliant on iron-catalyzed lipid peroxidation. Although the precise involvement of mitochondria in ferroptosis remains incompletely elucidated, recent research indicates that mitochondrial oxidative events wield a pivotal influence in this mechanism. This article centers on the most recent discoveries, spotlighting the significance of mitochondrial lipid peroxidation in the occurrence of ferroptosis. Modern investigative tools, such as mitochondria-specific dyes responsive to lipid peroxidation and antioxidants targeting mitochondria, have been employed to delve into this phenomenon. The authors’ recent empirical evidence demonstrates that mitochondrial lipid peroxidation, quantified using the innovative fluorescent ratiometric probe MitoCLox, takes place prior to the onset of ferroptotic cell death. The mitochondria-targeted antioxidant SkQ1 hinders mitochondrial lipid peroxidation and thwarts ferroptosis, all while leaving unaffected the buildup of reactive oxygen species within the cytoplasm, an antecedent to mitochondrial lipid peroxidation. Similarly, the redox agent methylene blue, impeding the genesis of reactive oxygen species in complex I of the electron transport chain, also imparts a comparable protective effect. These findings collectively imply that reactive oxygen species originating from complex I might hold particular significance in fomenting mitochondrial lipid peroxidation, a pivotal trigger of ferroptosis.

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Funding

The work was supported by the grant of the Russian Science Foundation No. 23–14-00061.

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BVC conceptualized and outlined the review. Material preparation, data collection, and analysis were performed by BVC and KGL. BVC and KGL wrote the first draft of the manuscript and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Konstantin G. Lyamzaev or Boris V. Chernyak.

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Lyamzaev, K.G., Panteleeva, A.A., Simonyan, R.A. et al. The critical role of mitochondrial lipid peroxidation in ferroptosis: insights from recent studies. Biophys Rev 15, 875–885 (2023). https://doi.org/10.1007/s12551-023-01126-w

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  • DOI: https://doi.org/10.1007/s12551-023-01126-w

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