Nuclear Deoxyribonucleic Acid and Ribonucleic Acid (DNA/RNA)

Nuclear Deoxyribonucleic Acid (DNA) and Ribonucleic Acid (RNA) constitute the essential genetic and regulatory framework of eukaryotic cells, residing primarily within the nucleus. DNA serves as the long-term repository of genetic information, while RNA molecules, including messenger RNA (mRNA) and various non-coding RNAs, act as the functional intermediaries that execute the genetic program through transcription and translation (NIH, 2023). In clinical pharmacology, these molecules are pivotal targets; traditional chemotherapies often induce direct DNA damage or inhibit replication enzymes to halt the proliferation of malignant cells (StatPearls, 2024). More recently, the advent of RNA-targeted therapeutics, such as antisense oligonucleotides and RNA interference (RNAi) agents, has enabled the precise modulation of gene expression by targeting specific RNA sequences to treat previously intractable genetic disorders (Nature Reviews Drug Discovery, 2020). Despite their therapeutic utility, drugs interacting with nuclear nucleic acids often face challenges regarding cellular delivery and systemic toxicity, as DNA-damaging agents can affect healthy dividing cells and potentially lead to secondary malignancies (PubMed, 2019). Furthermore, the development of resistance mechanisms, such as enhanced DNA repair pathways, remains a significant hurdle in maintaining the efficacy of DNA-targeted treatments in oncology.

Other names

Nuclear DNA and RNANucleic acidsGenomic DNANuclear transcriptsDeoxyribonucleic acidRibonucleic acid

Drugs targeting nuclear DNA and RNA operate through several distinct mechanisms: DNA alkylation (cross-linking DNA strands), intercalation (inserting between base pairs to inhibit replication), antimetabolite action (incorporating false building blocks), and sequence-specific binding via antisense oligonucleotides or RNA interference to modulate gene expression or splicing (PubMed, 2021; Nature Reviews Drug Discovery, 2020).