Bacterial and fungal deoxyribonucleic acid (DNA)

Bacterial and fungal deoxyribonucleic acid (DNA) constitutes the essential genetic material for microbial life, encoding all proteins and regulatory elements necessary for cellular function and replication (NIH, 2023). In bacteria, DNA is typically organized into a single circular chromosome and various plasmids, while fungal DNA is organized into linear chromosomes within a nucleus, similar to eukaryotes but with distinct regulatory sequences (Wikipedia, 2024). As a therapeutic target, microbial DNA is susceptible to agents that cause direct physical damage, such as strand breaks or cross-links, which halt the cell cycle and lead to microbial death (StatPearls, 2023). For example, nitroimidazole antibiotics like metronidazole are reduced within anaerobic bacteria to form reactive radicals that attack the DNA backbone (PubMed, 2022). In fungi, certain antimetabolites like flucytosine are converted into fraudulent nucleotides that incorporate into DNA or inhibit its synthesis, disrupting its integrity and function (DrugBank, 2024). The primary challenge in targeting DNA is achieving sufficient selectivity to spare host genomic DNA from similar damage, thereby minimizing the risk of secondary malignancies or organ toxicity (PubMed, 2021).

Other names

Microbial DNAProkaryotic DNAFungal DNAGenomic DNABacterial DNA

Induction of DNA strand breaks via reactive intermediates, intercalation between base pairs, and covalent cross-linking of DNA strands to prevent replication and transcription (StatPearls, 2023; NIH, 2024).