Cellular DNA and reactive oxygen species (ROS)-sensitive biomolecules

Cellular DNA and reactive oxygen species (ROS)-sensitive biomolecules encompass a wide array of intracellular components that are critical for maintaining cellular integrity and function. DNA, the primary repository of genetic information, is a major target for cytotoxic chemotherapy, where agents like cisplatin and cyclophosphamide induce structural damage such as cross-links and adducts to halt cell division (Source: NIH National Cancer Institute). ROS-sensitive biomolecules include proteins with susceptible cysteine residues and lipids that undergo peroxidation when exposed to high levels of oxidative stress (Source: PubMed, PMID: 25653195). Many therapeutic strategies, including radiation and pro-oxidant drugs like bleomycin, exploit the vulnerability of these molecules to induce apoptosis in cancer cells by overwhelming their antioxidant defenses (Source: StatPearls, NBK538238). Because these targets are present in both healthy and diseased cells, their therapeutic manipulation is often associated with significant toxicity, including myelosuppression and potential secondary malignancies (Source: American Cancer Society). Understanding the interaction between DNA damage and oxidative stress is essential for developing strategies to protect normal tissues while maximizing the destruction of pathological cells.

Other names

Genomic DNAMitochondrial DNAOxidative stress targetsRedox-sensitive proteinsLipid peroxidation targets

Induction of DNA damage through alkylation, cross-linking, or strand breaks, and the promotion of oxidative stress leading to the modification of redox-sensitive proteins and lipids.