Cellular macromolecules and redox-active metal ions

Cellular macromolecules and redox-active metal ions refers to the complex interplay between essential biological polymers (DNA, proteins, lipids) and transition metals such as iron and copper that can undergo oxidation-reduction cycles. While these metals are vital for physiological processes like oxygen transport and enzymatic catalysis, their labile forms can trigger the Fenton and Haber-Weiss reactions, generating highly reactive hydroxyl radicals (PubMed: 23624040). These radicals cause oxidative damage to macromolecules, leading to lipid peroxidation, protein carbonylation, and DNA strand breaks (NIH: PMC3614697). Such damage is a hallmark of various pathologies, including neurodegenerative diseases like Alzheimer's and Parkinson's, where metal accumulation promotes protein misfolding and oxidative stress (PubMed: 16005301). Therapeutic intervention typically involves the use of chelating agents, such as deferoxamine or penicillamine, which bind and neutralize these redox-active ions to prevent further tissue damage (StatPearls: NBK559124). Consequently, this target represents a broad biochemical environment or a pathological state rather than a single discrete protein or receptor.

Other names

Redox-active metalsMetal-macromolecule complexesLabile iron poolTransition metal ionsMetal-induced oxidative stress

Chelation of redox-active metal ions to prevent the formation of reactive oxygen species (ROS) via Fenton and Haber-Weiss reactions, thereby protecting cellular macromolecules from oxidative damage.