Bacterial host cell

A bacterial host cell is a prokaryotic organism characterized by the absence of a membrane-bound nucleus and specialized organelles (StatPearls, NBK554425). In medical pharmacology, these cells are the causative agents of bacterial infections and serve as the biological context for antimicrobial drug action (Nature Reviews Microbiology, 2005). While the cell itself is the entity being treated, it is not a single molecular target; rather, it contains specific proteins and structures like the cell wall and ribosomes that drugs bind to (PubMed, 15643431). In biotechnology, bacterial host cells like Escherichia coli are utilized to express recombinant proteins or propagate plasmids (NIH, PMC7120343). Therapeutic strategies targeting these cells include the use of antibiotics, which inhibit vital processes such as peptidoglycan synthesis or translation (StatPearls, NBK535444). Additionally, bacteriophages can use these cells as hosts for replication, leading to bacterial lysis in phage therapy (NIH, PMC9145522). The term is considered incorrect as a molecular target because it describes a whole organism rather than a specific receptor or enzyme.

Other names

BacteriumProkaryotic host cellBacterial pathogenBacterial cell

Antibiotics and antibacterial agents exert their effects by targeting specific molecular components within the bacterial cell, such as cell wall synthesis enzymes (e.g., penicillin-binding proteins), the 30S or 50S ribosomal subunits, or DNA gyrase and topoisomerase IV.