Iron Chelation Strategies in Oxidative Stress Management

Iron is indispensable for cellular metabolism yet poses a threat when present in its free, redox-active form. The propensity of ferrous iron to catalyse the generation of reactive oxygen species through the Fenton reaction underlies many pathological processes, including neurodegeneration, inflammation and organ injury. Iron chelation strategies aim to restore redox balance by sequestering labile iron, thereby limiting oxidative damage without compromising essential metalloprotein function. Contemporary approaches encompass low-molecular-weight chelators, polymeric agents and prochelator prodrugs designed for disease-selective activation. In neurological contexts, targeted chelators can mitigate catecholamine-driven lipid peroxidation, whereas in inflammatory and infectious settings they can deprive pathogens of iron and attenuate NF-κB-mediated cytokine cascades. Emerging work also explores the controlled induction of ferroptosis in cancerous tissues by harnessing iron-dependent lipid peroxidation pathways. Balancing chelator affinity, bioavailability and organ distribution remains central to therapeutic development, with an eye to global applicability across diverse clinical indications.

Research from Nature Portfolio

Recent studies have compared established clinical chelators—desferrioxamine, deferiprone and deferasirox—with novel aroylhydrazone analogues in a neuronal cell model of catecholamine-induced oxidative injury. The experimental chelator SIH demonstrated superior neuroprotection at achievable plasma concentrations, while its boronate-masked prochelator BSIH provided on-demand iron binding under oxidative conditions, minimising baseline metal depletion. These findings highlight the potential of disease-responsive chelation to preserve neuronal viability in disorders characterised by redox-active iron accumulation.

Iron Chelation Strategies in Oxidative Stress Management publication trend

The graph below shows the total number of articles in iron chelation strategies in oxidative stress management across all publications each year (not limited to Nature Index journals).

Technical terms

Reactive oxygen species (ROS): Chemically reactive molecules derived from oxygen, including free radicals and peroxides, which can damage biomolecules.

Fenton reaction: Iron-catalysed conversion of hydrogen peroxide into hydroxyl radicals, a key source of oxidative stress.

Labile iron pool: The cytosolic fraction of loosely bound, redox-active iron available for catalytic reactions.

Chelator: A molecule that binds metal ions tightly, reducing their reactivity and biological availability.

Ferroptosis: A regulated form of cell death driven by iron-dependent lipid peroxidation.

References

1. Dysregulated Iron Homeostasis as Common Disease Etiology and Promising Therapeutic Target. Antioxidants (2023).
2. Structure-Activity Relationships of Novel Salicylaldehyde Isonicotinoyl Hydrazone (SIH) Analogs: Iron Chelation, Anti-Oxidant and Cytotoxic Properties. PLOS ONE (2014).
3. The Hydroxypyridinone Iron Chelator DIBI Reduces Bacterial Load and Inflammation in Experimental Lung Infection. Biomedicines (2024).
4. Comparison of Treatment Effects of Different Iron Chelators in Experimental Models of Sepsis. Life (2021).