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Helmholtz-Zentrum für Infektionsforschung GmbH Inhoffenstraße 7 38124 Braunschweig, Germany http://www.helmholtz-hzi.de
Contact Mr Andreas Fischer +49 531 61811405
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Helmholtz-Zentrum für Infektionsforschung GmbH

Wie Bakterien ein Antibiotikum ausschalten

Forscher des HZI und HIPS haben entdeckt, dass resistente Bakterien den Wirkstoff Albicidin mithilfe eines massenhaft gebildeten Proteins einfangen und inaktivieren

(PresseBox) (Braunschweig, )
Gegen die immer häufiger auftauchenden multiresistenten Keime verlieren gängige Antibiotika zunehmend ihre Wirkung. Viele Bakterien haben natürlicherweise Mechanismen erworben, die sie vor schädlichen Substanzen schützen. So auch gegen den Wirkstoff Albicidin: Gefährliche gramnegative Bakterien besitzen ein Protein, das das Albicidin bindet und so inaktiviert. Diesen Resistenzmechanismus haben jetzt Wissenschaftler des Helmholtz-Zentrums für Infektionsforschung (HZI) und des zugehörigen Helmholtz-Instituts für Pharmazeutische Forschung Saarland (HIPS) mit atomarer Auflösung untersucht. Dabei fanden sie heraus, dass das Protein den Wirkstoff nicht nur bindet, sondern ihn auch chemisch verändert. Gleichzeitig kurbelt es seine eigene Produktion an, sodass Albicidin noch effizienter unschädlich gemacht wird. Ihre Ergebnisse lhznkrydmquclzbl neu Nurzdngnjjkkxnf vf Qjswnmu rq nug Kjpxkkvg Kdilrxwe Qdloqpc.

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