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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260514T014631Z DTSTART;VALUE=DATE-TIME:20190625T120000 DTEND;VALUE=DATE-TIME:20190625T130000 SUMMARY:WMS/SLS Micro Seminar: Real-time visualization of drug resistance acquisition by horizontal gene transfer reveals a new role for AcrAB-To lC multidrug efflux pump\, Christian Lesterlin\, University of Lyon TZID:Europe/London UID:20190625-8a17841a6b2d9fac016b46074227413f@warwick.ac.uk CREATED:20190625T091059Z DESCRIPTION:Abstract: Drug resistance dissemination by horizontal gene tr ansfer remains poorly understood at the cellular scale. Using live-cell microscopy\, we reveal the dynamics of resistance acquisition by transfe r of the F conjugative plasmid encoding the tetracycline-efflux pump Tet A. We show that the entry of the ssDNA plasmid into the recipient cell i s rapidly followed by complementary strand synthesis and expression of n ewly acquired genes. TetA production is enhanced by zygotic induction re sulting in the optimized establishment of resistance. In the presence of protein synthesis-inhibiting antibiotics\, acquisition of resistance be comes strictly dependent on AcrAB-TolC multidrug efflux pump. We demonst rate that AcrAB-TolC is required for maintenance of protein synthesis ac tivity and therefore TetA production following plasmid acquisition. This work uncovers a novel essential role of multidrug efflux systems in the acquisition of drug-specific resistance by horizontal gene transfer and helps to understand the dissemination of antibiotic resistance in bacte ria LOCATION:MBU (A151)\, Medical School Building CATEGORIES:BiomedicalSciences,BMS_MI,Joint WMS/SLS Micro LAST-MODIFIED:20190625T091059Z ORGANIZER;CN=Jas Bains: END:VEVENT END:VCALENDAR