Nucleic acid synthesis pathways

Nucleic acid synthesis pathways encompass the collective biochemical reactions responsible for the production of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). These pathways include the de novo synthesis of purine and pyrimidine nucleotides from simple precursors, as well as salvage pathways that recycle existing nucleosides and bases (Source: StatPearls, Biochemistry, RNA Synthesis). Because these processes are indispensable for cell division and the expression of genetic information, they serve as critical therapeutic targets in oncology, virology, and immunology (Source: PubMed, PMID: 28673543). Drugs targeting these pathways, such as antimetabolites and polymerase inhibitors, work by depleting nucleotide pools or acting as fraudulent building blocks that halt chain elongation (Source: PubChem, Antimetabolites). While highly effective against rapidly proliferating cancer cells and replicating viruses, these agents often exhibit narrow therapeutic indices. This is primarily due to their non-specific impact on healthy, fast-dividing host cells, such as those found in the bone marrow and intestinal mucosa, leading to significant clinical side effects (Source: National Cancer Institute, Chemotherapy Side Effects).

Other names

RNA synthesisDNA synthesisNucleotide biosynthesisDe novo nucleotide synthesisNucleic acid metabolism

Inhibition of enzymes involved in nucleotide precursor synthesis (antimetabolites), competitive inhibition of DNA or RNA polymerases, and induction of premature chain termination via nucleoside or nucleotide analogs.