Details

Autor(en) / Beteiligte

• Belenky, Peter
• Ye, Jonathan D.
• Porter, Caroline B.M.
• Cohen, Nadia R.
• Lobritz, Michael A.
• Ferrante, Thomas
• Jain, Saloni
• Korry, Benjamin J.
• Schwarz, Eric G.
• Walker, Graham C.
• Collins, James J.

Titel

Bactericidal Antibiotics Induce Toxic Metabolic Perturbations that Lead to Cellular Damage

Ist Teil von

• Cell reports (Cambridge), 2015-11, Vol.13 (5), p.968-980

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2015

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Understanding how antibiotics impact bacterial metabolism may provide insight into their mechanisms of action and could lead to enhanced therapeutic methodologies. Here, we profiled the metabolome of Escherichia coli after treatment with three different classes of bactericidal antibiotics (β-lactams, aminoglycosides, quinolones). These treatments induced a similar set of metabolic changes after 30 min that then diverged into more distinct profiles at later time points. The most striking changes corresponded to elevated concentrations of central carbon metabolites, active breakdown of the nucleotide pool, reduced lipid levels, and evidence of an elevated redox state. We examined potential end-target consequences of these metabolic perturbations and found that antibiotic-treated cells exhibited cytotoxic changes indicative of oxidative stress, including higher levels of protein carbonylation, malondialdehyde adducts, nucleotide oxidation, and double-strand DNA breaks. This work shows that bactericidal antibiotics induce a complex set of metabolic changes that are correlated with the buildup of toxic metabolic by-products. [Display omitted] •Diverse bactericidal antibiotics induced similar metabolic changes•Bactericidal antibiotics induced biomarkers of oxidative stress•Bactericidal antibiotics induced dsDNA breaks Belenky et al. profile the metabolome of Escherichia coli after treatment with different classes of bactericidal antibiotics and find that these treatments induce a similar set of metabolic changes. Antibiotic-treated cells were also found to exhibit cytotoxic changes indicative of oxidative stress. This insight could lead to enhanced therapeutic methodologies.