Skip to Main content Skip to Navigation
Journal articles

Relating switching rates between normal and persister cells to substrate and antibiotic concentrations: a mathematical modelling approach supported by experiments

Abstract : We developed and compared two mathematical models of variable phenotypic switching rates between normal and persister cells that depend on substrate concentration and antibiotic presence. They could be used to simulate the formation of persisters in environments with concentration gradients such as biofilms. Our models are extensions of a previous model of the dynamics of normal and persistent cell populations developed by Balaban et al. (2004, Science 305: 1622). We calibrated the models' parameters with experimental killing curves obtained after ciprofloxacin treatment of samples regularly harvested from planktonic batch cultures of Klebsiella pneumoniae. Our switching models accurately reproduced the dynamics of normal and persistent populations in planktonic batch cultures and under antibiotic treatment. Results showed that the models are valid for a large range of substrate concentrations and for zero or high doses of antibiotics.
Document type :
Journal articles
Complete list of metadata

Cited literature [35 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01779031
Contributor : Import Ws Irstea <>
Submitted on : Thursday, April 26, 2018 - 11:39:09 AM
Last modification on : Tuesday, February 23, 2021 - 11:30:02 AM
Long-term archiving on: : Tuesday, September 25, 2018 - 7:16:44 PM

File

cf2017-pub00056700.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

G. Carvalho, C. Guilhen, D. Balestrino, C. Forestier, Jean-Denis Mathias. Relating switching rates between normal and persister cells to substrate and antibiotic concentrations: a mathematical modelling approach supported by experiments. Microbial Biotechnology, Wiley, 2017, 10 (6), pp.1616-1627. ⟨10.1111/1751-7915.12739⟩. ⟨hal-01779031⟩

Share

Metrics

Record views

251

Files downloads

424