重新利用一种药物来惩罚耐卡巴胺的Acinetobacter baumannii
Jennifer M Colquhoun1, Carter U Brzezinski2, Andrew Ji1
1Research Service, Atlanta VA Medical Center, Decatur, GA 30033.
概括
芬迪林是一种FDA批准的药物,通过抑制必需的脂蛋白贩运 (Lol) 途径,对抗卡巴耐药的Acinetobacter baumannii表现出抗菌活性. 这一发现将卡巴胺耐药性与Lol通路压力联系在一起,为抗生素开发提供了新的途径.
科学领域:
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
- 分子生物学分子生物学
背景情况:
- 在Acinetobacter baumannii中,碳烯胺耐药性是严重的公共卫生威胁,由OXAβ-lactamases等机制驱动.
- 碳烯是最后的抗生素,使得耐药性成为治疗细菌感染的主要挑战.
研究的目的:
- 确定对抗抗卡巴胺耐药Acinetobacter baumannii的新型治疗策略.
- 调查针对抵抗路径的已识别化合物的作用机制.
主要方法:
- 对FDA批准的药物库进行查,以识别具有抗菌活性的化合物.
- 基因和蛋白质组分析以阐明被识别的化合物所影响的分子标和途径.
- 描述OXA-23作为外膜脂蛋白,并评估其对细菌活力的影响.
主要成果:
- 芬迪林是一种通道阻塞剂,对表达A.的OXA-23具有显著的抗菌活性. 波曼尼 (Baumannii) 是一个人.
- 发现芬迪林可以抑制基本脂蛋白贩运 (Lol) 途径在两种类型中. 宝曼尼和埃舍里奇亚大肠杆菌.
- 过度表达OXA-23导致脂蛋白贩运缺陷患者对芬迪林的敏感性增加. 波曼尼 (Baumannii) 是一个人.
结论:
- 过度表达OXA-23β-乳糖酶会在脂蛋白贩运途径中产生压力,使A. 宝曼尼对芬迪林更容易受到影响.
- 卡巴胺耐药性和Lol途径之间的联系在A. 已经建立了 baumannii.
- 这些发现为开发针对Lol途径的新药提供了基础,以对抗耐卡巴胺细菌.
关键词:
这种细菌是Acinetobacter baumannii.在OXAβ-乳糖酶中,OXAβ-乳糖酶是抗生素耐药性 抗生素耐药性药物重用是为了改变药物的用途.芬迪林 (fendiline) 是一种可怕的药物.更多相关视频
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