Nucleic Acid Metabolism and Disorders

Nucleic acid metabolism refers to the entire spectrum of nucleotide synthesis and degradation activities. Anabolic mechanisms such as phosphate, pentose sugar, and a nitrogenous base react chemically to produce nucleotide which polymerizes to form either deoxyribonucleic acid or ribonucleic acid. A catabolic process occurs when nucleic acid is degraded to its monomeric subunit nucleotides. To produce new nucleotides, portions of the nucleotides or nucleobases can also be rescued. Metabolism studies must take into account salvage pathways, which allow partially catabolic products to be redirected into an anabolic pathway for incorporation into new macromolecular structures, in addition to the relatively simple catabolism pathways of nucleic acids. Several modifications in purine and pyrimidine metabolism cause many inborn errors of metabolism, however, understanding these faults is also essential for the effective treatment of numerous life-threatening disorders. These comprise gout, infectious disorders, inflammatory conditions including rheumatoid arthritis, cardiovascular disease, and a variety of cancers such as leukemia, pancreatic cancer, nonsmall cell lung cancer, and colon cancer. This chapter explores the multifaceted role of nucleic acid metabolism, elucidating its pivotal role in cellular functions and disease pathology. Insights derived from these intricate pathways will not only unravel the origins of severe conditions but also pave the way for innovative therapeutic strategies targeting a spectrum of challenging medical afflictions.