DNA metabolism

DNA metabolism is a broad biological category encompassing the integrated network of biochemical pathways responsible for the synthesis, replication, repair, and modification of DNA (Nature Education, 2014). It is essential for maintaining genomic integrity, ensuring the accurate transmission of genetic information during cell division, and responding to DNA damage caused by endogenous or environmental factors (NIH/NCBI, 2023). While not a single therapeutic target itself, DNA metabolism contains numerous specific enzymes and receptors—such as DNA polymerases, topoisomerases, and PARP proteins—that serve as critical targets in oncology and infectious disease (StatPearls, 2023). Dysregulation of DNA metabolism is a hallmark of cancer, where increased replication stress or defective repair pathways are exploited by chemotherapeutic agents to induce selective cytotoxicity (Cell, 2015). Drugs targeting these processes often work by inhibiting nucleotide synthesis, creating physical barriers to replication through cross-linking, or trapping repair enzymes on the DNA strand. However, because these processes are also vital for normal cell function, therapeutic intervention often carries significant safety concerns, including myelosuppression and the potential for secondary cancers.

Other names

Genome maintenanceDNA processingDNA synthesis and repairDNA metabolic process

Inhibition of DNA synthesis, induction of DNA cross-links, inhibition of DNA repair enzymes (e.g., PARP), and interference with DNA topology (Topoisomerase inhibition).