التفاصيل البيبلوغرافية
| العنوان: |
Inhibition of Mutation and Combating the Evolution of Antibiotic Resistance. |
| المؤلفون: |
Cirz, Ryan T.1, Chin, Jodie K.1, Andes, David R.2, de Crécy-Lagard, Valerie3, Craig, William A.2, Romesbergi, Floyd E.1 floyd@scripps.edu |
| المصدر: |
PLoS Biology. Jun2005, Vol. 3 Issue 6, p1024-1033. 10p. |
| مصطلحات موضوعية: |
*GENETIC mutation, *ANTIBIOTICS, *DRUG resistance in microorganisms, *GENETICS, *ESCHERICHIA coli, *CHROMOSOMAL proteins |
| مستخلص: |
The emergence of drug-resistant bacteria poses a serious threat to human health. In the case of several antibiotics, including those of the quinolone and rifamycin classes, bacteria rapidly acquire resistance through mutation of chromosomal genes during therapy. In this work, we show that preventing induction of the SOS response by interfering with the activity of the protease LexA renders pathogenic Escherichia coil unable to evolve resistance in vivo to ciprofloxacin or rifampicin, important quinolone and rifamycin antibiotics. We show in vitro that LexA cleavage is induced during RecBC-mediated repair of ciprofloxacin-mediated DNA damage and that this results in the derepression of the SOS-regulated polymerases Pol II, Pol IV and Pol V, which collaborate to induce resistance-conferring mutations. Our findings indicate that the inhibition of mutation could serve as a novel therapeutic strategy to combat the evolution of antibiotic resistance. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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