Growth-mediated negative feedback shapes quantitative antibiotic response

ABSTRACT: Dose-response relationships are a general concept for quantitatively describing biological systems across multiple scales, from the molecular to the whole-cell level. A clinically relevant example is the bacterial growth response to antibiotics, which is routinely characterized by dose-response curves. The shape of the dose-response curve varies drastically between antibiotics and plays a key role for treatment, drug interactions, and resistance evolution. However, the mechanisms shaping the dose-response curve remain largely unclear. Here, we show in Escherichia coli that the distinctively shallow dose-response curve of the antibiotic trimethoprim is caused by a negative growth-mediated feedback loop: Trimethoprim slows growth, which in turn weakens the effect of this antibiotic. This fee

SUBMITTER: S. Andreas Angermayr 

PROVIDER: S-SCDT-MSB-2021-10490 | biostudies-other |

REPOSITORIES: biostudies-other