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fem ABX家族—抗生素开发的新靶位 被引量:1

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摘要 femABX家族是一大类结构和功能相似的基因的统称 ,主要见于葡萄球菌和链球菌。迄今已发现 2 0种 ,主要与细菌细胞壁肽聚糖合成有关。转座子插入失活该类基因的葡萄球菌 (敏感菌株和耐药株 )表现出对甲氧西林及其他非 β -内酰胺类抗生素敏感性的上升。该类基因可作为新的作用靶位 ,开发既可克服葡萄球菌属现有耐药又具特异杀菌作用的抗菌药物。MRSA对 β -内酰胺类抗生素耐药是因为后者能诱导产生一种新的PBP2a所致。万古霉素则作用于肽聚糖D -Ala -D -Ala从而阻遏细胞壁形成 ,可用于治疗MRSA感染。但自报道万古霉素中介的金黄色葡萄球菌后 ,治疗形势日渐严峻 ,寻找新的作用靶位开发全新的抗菌药就显得尤为重要。就近年来发现的一些可能的新靶位基因的结构、功能、应用等方面做一综述。
出处 《国外医药(抗生素分册)》 CAS 2005年第1期1-4,18,共5页 World Notes on Antibiotics
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