Nuclear proteins and Deoxyribonucleic acid (DNA) (DNA)

Nuclear proteins and Deoxyribonucleic acid (DNA) represent the collective structural and functional components of the cell nucleus responsible for storing and processing genetic information (UniProt, SL-0191). DNA serves as a primary target for cytotoxic chemotherapy, where agents like cisplatin and doxorubicin induce structural damage or intercalate to halt the proliferation of malignant cells (PubMed, 23412527). Nuclear proteins, including histones, polymerases, and repair enzymes, regulate the accessibility and integrity of the genome, making them vital targets for precision therapies such as PARP inhibitors and epigenetic modulators (Nature Reviews Cancer, 2017). This target class is central to the pathology of cancer, where mutations and epigenetic dysregulation drive uncontrolled growth (NIH, Cancer Stat Facts). While highly effective, targeting these fundamental components often results in significant side effects, such as myelosuppression and genotoxicity, due to the disruption of normal cellular maintenance across healthy tissues (StatPearls, Chemotherapy Side Effects). The complexity of this target group necessitates specific biomarkers, such as BRCA mutations or microsatellite instability status, to guide the use of targeted agents (PubMed, 28630344).

Other names

ChromatinNucleoprotein complexGenomic DNANuclear apparatusNuclear antigens

Drugs targeting this complex act through various mechanisms including DNA alkylation and cross-linking, intercalation between base pairs, inhibition of topoisomerases, inhibition of DNA repair enzymes like PARP, and modulation of epigenetic states via histone deacetylase inhibition (PubMed, 23412527; Nature Reviews Cancer, 2017).