Bicyclic brominated furanones: A new class of quorum sensing modulators that inhibit bacterial biofilm formation
作者:Sijie Yang、Osama A. Abdel-Razek、Fei Cheng、Debjyoti Bandyopadhyay、Gauri S. Shetye、Guirong Wang、Yan-Yeung Luk
DOI:10.1016/j.bmc.2014.01.004
日期:2014.2
Both natural and synthetic brominated furanones are known to inhibit biofilm formation by bacteria, but their toxicity to mammalian cells is often not reported. Here, we designed and synthesized a new class of brominated furanones (BBFs) that contained a bicyclic structure having one bromide group with well-defined regiochemistry. This class of molecules exhibited reduction in the toxicity to mammalian
已知天然和合成溴化呋喃酮均能抑制细菌生物膜的形成,但通常没有报道它们对哺乳动物细胞的毒性。在这里,我们设计并合成了一类新的溴化呋喃酮 (BBF),其包含具有一个具有明确区域化学的溴化物基团的双环结构。这类分子表现出对哺乳动物细胞(人神经母细胞瘤 SK-N-SH)的毒性降低,并且不抑制细菌(铜绿假单胞菌和大肠杆菌)的生长,但保留了对细菌生物膜形成的抑制活性。此外,所有 BBF 均抑制铜绿假单胞菌毒力因子弹性蛋白酶 B 的产生. 为了探索BBF对群体感应的影响,我们使用了报告基因检测,发现6 - BBF和7 - BBF在lasI群体感应回路中对 LasR 蛋白表现出拮抗活性,而5 - BBF对rhlI群体表现出激动活性感应电路。这项研究表明,溴化呋喃酮的结构变化可以设计用于控制生物膜形成的靶向功能。