Cellular components susceptible to reactive oxygen species

Cellular components susceptible to reactive oxygen species (ROS) encompass a diverse group of biological macromolecules, including lipids, proteins, and nucleic acids, that undergo chemical modification when exposed to oxidative stress. ROS, such as superoxide radicals and hydrogen peroxide, can induce lipid peroxidation, protein carbonylation, and DNA strand breaks, leading to impaired cellular function and genomic instability (Source: NIH, PubMed). These oxidative processes are central to the pathophysiology of various conditions, including cancer, Alzheimer's disease, and atherosclerosis (Source: StatPearls). While these components are not individual therapeutic targets like receptors or enzymes, they represent the primary sites of damage that antioxidants and ROS scavengers aim to protect. Drugs such as N-acetylcysteine and various vitamin derivatives interact indirectly by neutralizing ROS before they can reach these susceptible components or by bolstering endogenous defense systems like glutathione (Source: PubChem). Understanding the vulnerability of these components is crucial for developing therapies that mitigate the systemic effects of oxidative stress in chronic diseases, although therapeutic intervention is challenging because low levels of ROS are essential for normal physiological signaling.

Other names

Oxidative stress targetsCellular macromoleculesROS-sensitive moleculesBiological substrates of oxidation

Antioxidants and scavengers neutralize reactive oxygen species to prevent the oxidative modification and degradation of lipids, proteins, and nucleic acids.