Showing papers by "Linus Sandegren published in 2009"
TL;DR: This Review highlights the dynamic properties of gene amplifications and describes how they can facilitate adaptive evolution in response to toxic drugs and most types of antibiotic resistance mechanism are deleterious in the absence of antibiotics.
Abstract: Recent data suggest that, in response to the presence of antibiotics, gene duplication and amplification (GDA) constitutes an important adaptive mechanism in bacteria For example, resistance to sulphonamide, trimethoprim and beta-lactams can be conferred by increased gene dosage through GDA of antibiotic hydrolytic enzymes, target enzymes or efflux pumps Furthermore, most types of antibiotic resistance mechanism are deleterious in the absence of antibiotics, and these fitness costs can be ameliorated by increased gene dosage of limiting functions In this Review, we highlight the dynamic properties of gene amplifications and describe how they can facilitate adaptive evolution in response to toxic drugs
280 citations