Quorum sensing:: the power of cooperation in the world of Pseudomonas

被引:284
作者
Juhas, M [1 ]
Eberl, L
Tümmler, B
机构
[1] Univ Oxford, Nuffield Dept Clin Lab Sci, Oxford OX3 9DU, England
[2] Univ Zurich, Inst Plant Biol, Dept Microbiol, CH-8008 Zurich, Switzerland
[3] Hannover Med Sch, Clin Res Grp, D-30625 Hannover, Germany
关键词
D O I
10.1111/j.1462-2920.2005.00769.x
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Work over the past few years has provided evidence that quorum sensing is a generic regulatory mechanism that allows bacteria to launch a unified, coordinated response in a population density-dependent manner to accomplish tasks which would be difficult, if not impossible, to achieve for a single bacterial cell. Quorum sensing systems are widespread among pseudomonads and the one of the human opportunistic pathogen Pseudomonas aeruginosa belongs to the most extensively studied cell-to-cell communication systems. In this organism, quorum sensing is highly complex and is made up of two interlinked N-acyl homoserine lactone (AHL)-dependent regulatory circuits, which are further modulated by a non-AHL-related signal molecule and numerous regulators acting both at the transcriptional and post-transcriptional level. This genetic complexity may be one of the key elements responsible for the tremendous environmental versatility of P. aeruginosa. Work of the past few years showed that quorum sensing is essential for the expression of a battery of virulence factors as well as for biofilm formation in P. aeruginosa and thus represents an attractive target for the design of novel drugs for the treatment of P. aeruginosa infections. Furthermore, the cell-to-cell communication ability was also demonstrated in a number of additional pseudomonads.
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收藏
页码:459 / 471
页数:13
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