Bacterial cellular components (via reactive oxygen species)

Bacterial cellular components (via reactive oxygen species) refers to the collective set of essential biomolecules—including genomic DNA, functional proteins, and membrane lipids—that serve as the ultimate victims of oxidative stress within a bacterium. This phenomenon is often triggered by the accumulation of reactive oxygen species (ROS), such as superoxide, hydrogen peroxide, and the highly deleterious hydroxyl radical, which are generated as a secondary consequence of the action of various bactericidal antibiotics (Kohanski et al., 2007, Cell). The process typically involves the disruption of iron-sulfur clusters and the subsequent stimulation of the Fenton reaction, which produces radicals that cause catastrophic, non-specific damage to the cell (Ezraty et al., 2017, Nature Reviews Microbiology). While many antimicrobial strategies aim to exploit this pathway to enhance bacterial killing, it is characterized as a mechanism of lethality or a physiological state rather than a single, discrete therapeutic target like a specific enzyme or receptor (Imlay, 2013, Nature Reviews Microbiology). Consequently, drugs interacting with this pathway often rely on overwhelming the bacterium's innate antioxidant defenses to achieve a bactericidal effect.

Other names

Bacterial oxidative stress targetsBacterial DNA, proteins, and lipidsROS-mediated bacterial damageOxidative cellular components

Induction of endogenous reactive oxygen species (ROS) production, such as hydroxyl radicals via the Fenton reaction, leading to non-specific oxidative damage to essential bacterial biomolecules.