Marinopyrrole Derivatives as Potential Antibiotic Agents against Methicillin-Resistant Staphylococcus aureus (I)
作者:Yan Liu、Nina M. Haste、Wdee Thienphrapa、Victor Nizet、Mary Hensler、Rongshi Li
DOI:10.3390/md10040953
日期:——
Infections caused by drug-resistant pathogens are on the rise. The ongoing spread of methicillin-resistant Staphylococcus aureus (MRSA) strains exemplifies the urgent need for new antibiotics. The marine natural product, marinopyrrole A, was previously shown to have potent antibiotic activity against Gram-positive pathogens, including MRSA. However, its minimum inhibitory concentration (MIC) against
由耐药病原体引起的感染呈上升趋势。耐甲氧西林金黄色葡萄球菌 (MRSA) 菌株的持续传播表明迫切需要新的抗生素。海洋天然产物 marinopyrrole A 先前已被证明对革兰氏阳性病原体(包括 MRSA)具有有效的抗生素活性。然而,在存在 20% 人血清的情况下,其对 MRSA 的最小抑制浓度 (MIC) 增加了 >500 倍,因此极大地限制了治疗潜力。在这里,我们报告我们发现了一种新的 marinopyrrole A 衍生物,命名为 1a,其对 MRSA 的 MIC 提高了 2-4 倍,并且对血清抑制的敏感性显着降低。重要的是,化合物 1a 显示出对 MRSA 的快速和浓度依赖性杀伤。与天然产品对应物相比,