Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Subscribe

Sci. Signal., 22 November 2011
Vol. 4, Issue 200, p. ec328
[DOI: 10.1126/scisignal.4200ec328]

EDITORS' CHOICE

Microbiology Arrest and Tolerate

Caroline Ash

Science, AAAS, Cambridge CB2 1LQ, UK

When starving bacteria arrest their growth, they can resist killing by nearly all classes of antibiotics. Starvation is also a major cause of drug tolerance in biofilms, a bacterial community structure found in many chronic infections. Nguyen et al. (see the Perspective by Belenky and Collins) show that such antibiotic tolerance occurs not because the targets for antibiotics have become inactive during growth arrest but because starvation-sensing mechanisms generate protective responses. Bacterial mutants unable to detect nutrient limitation were orders of magnitude more sensitive to antibiotic exposure, were less able to establish animal infections, and failed to generate antibiotic-resistant mutants.

D. Nguyen, A. Joshi-Datar, F. Lepine, E. Bauerle, O. Olakanmi, K. Beer, G. McKay, R. Siehnel, J. Schafhauser, Y. Wang, B. E. Britigan, P. K. Singh, Active starvation responses mediate antibiotic tolerance in biofilms and nutrient-limited bacteria. Science 334, 982–986 (2011). [Abstract] [Full Text]

P. Belenky, J. J. Collins, Antioxidant strategies to tolerate antibiotics. Science 334, 915–916 (2011). [Abstract] [Full Text]

Citation: C. Ash, Arrest and Tolerate. Sci. Signal. 4, ec328 (2011).


To Advertise     Find Products


Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882