CELL:时隔多年,终于发现革兰氏阴性菌新型抗生素!

2020-06-04 MedSci原创 MedSci原创

SCH-7979797具有两个独立的细胞靶点,即叶酸代谢和细菌膜完整性,在杀灭耐甲氧西林金黄色葡萄球菌(MRSA)耐药菌方面优于联合治疗。

现今,抗生素耐药性的上升和新的抗生素的发现不断减少,造成了全球健康危机。特别值得关注的是,近几十年来没有一种新的抗生素类药物被批准用于治疗革兰氏阴性病原体。

最近,研究人员发现了一种化合物SCH-7979797,其可以通过独特的双靶点作用机制(MoA),以难以察觉的低耐药频率杀死革兰氏阴性和革兰氏阳性细菌。

为了表征其MoA,研究人员结合了定量成像、蛋白质组学、遗传学、代谢组学和基于细胞的检测。结果表明,SCH-7979797具有两个独立的细胞靶点,即叶酸代谢和细菌膜完整性,在杀灭耐甲氧西林金黄色葡萄球菌(MRSA)耐药菌方面优于联合治疗。

在SCH-7979797的分子核心基础上,研究人员还开发了一种衍生物Irresistin-16,其药效增强,并在小鼠阴道感染模型中显示出对淋病奈瑟菌的疗效。

这种有前景的抗生素的发现表明,将多种MoAs结合到一个单一的化学支架上可能是一种未被重视的方法,可用于靶向具有挑战性的细菌病原体。

 

原始出处:

James K. Martin II et al. A Dual-Mechanism Antibiotic Kills Gram-Negative Bacteria and Avoids Drug Resistance, CELL (2020). DOI:https://doi.org/10.1016/j.cell.2020.05.005

 

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    2021-01-09 zb1235672

    学习了

    0

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    2020-06-11 whmdzju
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    2021-02-27 维他命
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    2020-06-04 lifefamily@163

    #抗生素#山重水复疑无路

    0

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