ABSTRACT
Acinetobacter baumannii
is a major human pathogen associated with multidrug-resistant nosocomial infections; its virulence is attributed to quorum-sensing-mediated biofilm formation, and disruption of biofilm formation is an attractive antivirulence strategy. Here, we report the first successful demonstration of biofilm disruption in a clinical isolate of
A. baumannii
S1, using a quorum-quenching lactonase obtained by directed evolution; this engineered lactonase significantly reduced the biomass of
A. baumannii
-associated biofilms, demonstrating the utility of this antivirulence strategy.
摘要
鲍曼不动杆菌
鲍曼不动杆菌是一种主要的人类病原体,与耐多药的医院内感染有关;其毒性归因于由法定量感应介导的生物膜形成,而破坏生物膜形成是一种有吸引力的抗病毒策略。在此,我们报告了首次在临床分离的鲍曼不动杆菌中成功破坏生物膜的情况。
鲍曼不动杆菌
S1 的生物膜破坏;这种通过定向进化获得的法定量淬灭内酯酶显著降低了
鲍曼不动杆菌
-与之相关的生物膜的生物量,证明了这种抗病毒策略的实用性。