RRC ID 59196
Author Nolivos S, Cayron J, Dedieu A, Page A, Delolme F, Lesterlin C.
Title Role of AcrAB-TolC multidrug efflux pump in drug-resistance acquisition by plasmid transfer.
Journal Science
Abstract Drug-resistance dissemination by horizontal gene transfer remains poorly understood at the cellular scale. Using live-cell microscopy, we reveal the dynamics of resistance acquisition by transfer of the Escherichia coli fertility factor-conjugation plasmid encoding the tetracycline-efflux pump TetA. The entry of the single-stranded DNA plasmid into the recipient cell is rapidly followed by complementary-strand synthesis, plasmid-gene expression, and production of TetA. In the presence of translation-inhibiting antibiotics, resistance acquisition depends on the AcrAB-TolC multidrug efflux pump, because it reduces tetracycline concentrations in the cell. Protein synthesis can thus persist and TetA expression can be initiated immediately after plasmid acquisition. AcrAB-TolC efflux activity can also preserve resistance acquisition by plasmid transfer in the presence of antibiotics with other modes of action.
Volume 364(6442)
Pages 778-782
Published 2019-5-24
DOI 10.1126/science.aav6390
PII 364/6442/778
PMID 31123134
MeSH Anti-Bacterial Agents / pharmacology Antiporters / antagonists & inhibitors Antiporters / biosynthesis Antiporters / genetics Bacterial Proteins / antagonists & inhibitors Bacterial Proteins / biosynthesis Bacterial Proteins / genetics Carrier Proteins / genetics Carrier Proteins / physiology* Conjugation, Genetic DNA, Single-Stranded Drug Resistance, Multiple, Bacterial / genetics* Escherichia coli / drug effects Escherichia coli / genetics Escherichia coli / physiology* Escherichia coli Proteins / genetics Escherichia coli Proteins / physiology* F Factor / genetics F Factor / physiology* Microscopy Protein Biosynthesis / drug effects Tetracycline / pharmacology
IF 41.063
Times Cited 15
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Total number of mentions 173
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Resource
Prokaryotes E. coli ME9806