Efflux Impacts Intracellular Accumulation Only in Actively Growing Bacterial Cells
2021
Emily E. Whittle | Helen E. McNeil | Eleftheria Trampari | Mark Webber | Tim W. Overton | Jessica M. A. Blair
This study shows that efflux is important for maintaining low intracellular accumulation only in actively growing cells and that envelope permeability is the predominant factor in stationary-phase cells. This conclusion means that (i) antibiotics with intracellular targets may be less effective in complex infections with nongrowing or slow-growing bacteria, where intracellular accumulation may be low; (ii) efflux inhibitors may be successful in potentiating the activity of existing antibiotics, but potentially only for bacterial infections where cells are actively growing; and (iii) the remodeling of the cell envelope prior to stationary phase could provide novel drug targets.
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