Cellular lipids and redox-active macromolecules

Cellular lipids and redox-active macromolecules refers to a diverse group of biological components, primarily polyunsaturated fatty acids (PUFAs) and proteins with sensitive functional groups, that are susceptible to oxidative modification. These molecules are not a single therapeutic target but rather a collective site of action for cytoprotective drugs, antioxidants, and ferroptosis inhibitors (Dixon et al., 2012, Cell). In many disease states, including neurodegeneration and ischemia-reperfusion injury, the uncontrolled oxidation of these macromolecules leads to membrane rupture, protein misfolding, and cell death (Stockwell et al., 2017, Cell). Drugs like amifostine and various lipid-peroxyl radical scavengers interact with this target by neutralizing reactive oxygen species (ROS) before they can cause irreversible damage (Kouvaris et al., 2007, The Oncologist). Consequently, protecting these macromolecules is a key strategy in mitigating radiation damage and preventing ferroptotic cell death in oncological and neurological contexts. This approach focuses on maintaining cellular integrity by preventing the chain reaction of lipid peroxidation and the oxidative inactivation of essential enzymes. While broad, this target class is central to the development of therapies aimed at managing oxidative stress-induced pathologies.

Other names

Cellular membranesPolyunsaturated fatty acidsRedox-sensitive proteinsBiological macromolecules

Scavenging of reactive oxygen species (ROS) and inhibition of lipid peroxidation to prevent oxidative degradation of cellular components (Halliwell & Gutteridge, 2015, Free Radicals in Biology and Medicine).