The DOI matches its Crossref record; 94 of the 94 references it cites were found in a registry or an index.
Gyrase inhibitors induce an oxidative damage cellular death pathway in Escherichia coli
Open accessAbstract
Modulation of bacterial chromosomal supercoiling is a function of DNA gyrase-catalyzed strand breakage and rejoining. This reaction is exploited by both antibiotic and proteic gyrase inhibitors, which trap the gyrase molecule at the DNA cleavage stage. Owing to this interaction, double-stranded DNA breaks are introduced and replication machinery is arrested at blocked replication forks. This immediately results in bacteriostasis and ultimately induces cell death. Here we demonstrate, through a series of phenotypic and gene expression analyses, that superoxide and hydroxyl radical oxidative species are generated following gyrase poisoning and play an important role in cell killing by gyrase inhibitors. We show that superoxide-mediated oxidation of iron-sulfur clusters promotes a breakdown of iron regulatory dynamics; in turn, iron misregulation drives the generation of highly destructive hydroxyl radicals via the Fenton reaction. Importantly, our data reveal that blockage of hydroxyl radical formation increases the survival of gyrase-poisoned cells. Together, this series of biochemical reactions appears to compose a maladaptive response, that serves to amplify the primary effect of gyrase inhibition by oxidatively damaging DNA, proteins and lipids.
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Metadata
- Authors
- Dwyer, D. J., Kohanski, M. A., Hayete, B., & Collins, J. J.
- Venue
- Molecular Systems Biology
- Published
- 2007-01
- Volume
- 3
- Issue
- 1
- Pages
- 91-91
- ISSN
- 1744-4292 (ISSN-L)
- OpenAlex
- W2146481325
- Cited by
- 469
- References
- 94
- FWCI
- 10.38
- Type
- journal article
- Language
- en
- Open access
- gold
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- Dwyer, D. J., Kohanski, M. A., Hayete, B., & Collins, J. J. (2007). Gyrase inhibitors induce an oxidative damage cellular death pathway in Escherichia coli. Molecular Systems Biology. https://doi.org/10.1038/msb4100135
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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