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Intracellular Biological Macromolecules as Targets of Free Radical Generation
- Molecular classification
- DNA, Proteins, Lipids
01
Overview
Intracellular biological macromolecules—primarily DNA, proteins, and lipids—are major targets for free radical attack within cells. Free radicals are highly reactive chemical species with unpaired electrons that can initiate chain reactions, leading to oxidative damage of these essential biomolecules. This process is central to the pathogenesis of many diseases and aging-related cellular dysfunction.
- Other names
- DNAProteinsLipidsNucleic AcidsIntracellular MacromoleculesOxidative Damage Targets
02
Mechanism of action
Antioxidant defense, free radical scavenging, prevention of oxidative damage to macromolecules
03
Biological functions
Genome maintenanceProtein synthesisEnzymatic catalysisCell signalingMembrane structureEnergy metabolism
04
Disease associations
CancerNeurodegenerative diseaseCardiovascular diseaseDiabetes complicationsAgingInflammation
05
Safety considerations
Potential for antioxidant overdoseComplex interactions with redox signalingOff-target effects of radical scavengersPro-oxidant effects of some antioxidants at high concentrations
06
Interacting drugs
Antioxidants (e.g., Vitamin E, Vitamin C, Glutathione)
2 more in the full profile.
07
Biomarkers
8-OHdG (DNA damage)Malondialdehyde (MDA, lipid peroxidation)Protein carbonyls (protein oxidation)Glutathione levelsSuperoxide dismutase (SOD) activityCatalase activity
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