Inhibition of stationary phase respiration impairs persister formation in E. coli. Author Mehmet Orman, Mark Brynildsen Publication Year 2015 Type Journal Article Abstract Bacterial persisters are rare phenotypic variants that temporarily tolerate high antibiotic concentrations. Persisters have been hypothesized to underlie the recalcitrance of biofilm infections, and strategies to eliminate these cells have the potential to improve treatment outcomes for many hospital-treated infections. Here we investigate the role of stationary phase metabolism in generation of type I persisters in Escherichia coli, which are those that are formed by passage through stationary phase. We find that persisters are unlikely to derive from bacteria with low redox activity, and that inhibition of respiration during stationary phase reduces persister levels by up to ∼1,000-fold. Loss of stationary phase respiratory activity prevents digestion of endogenous proteins and RNA, which yields bacteria that are more capable of translation, replication and concomitantly cell death when exposed to antibiotics. These findings establish bacterial respiration as a prime target for reducing the number of persisters formed in nutrient-depleted, non-growing populations. Keywords Protein Biosynthesis, Escherichia coli, Bacterial Infections, Phenotype, Energy Metabolism, Oxidation-Reduction, Drug Tolerance, Cell Culture Techniques, Drug Resistance, Bacterial, Reactive Oxygen Species Journal Nat Commun Volume 6 Pages 7983 Date Published 2015 Aug 06 ISSN Number 2041-1723 DOI 10.1038/ncomms8983 Alternate Journal Nat Commun PMCID PMC4530465 PMID 26246187 PubMedPubMed CentralGoogle ScholarBibTeXEndNote X3 XML