费布克索斯塔特类似物作为抗定数感应和抗菌剂
Praveen Kumar Singh1, Matej Zore1, Paola San-Martin-Galindo2
1Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00014 Helsinki, Finland.
概括
这项研究合成了新的febuxostat类似物,以抑制细菌的定数感应 (QS) 和对抗多药耐药细菌. 几种类型显示出强大的抗菌活性,对抗低细胞毒性格兰阳性细菌.
科学领域:
- 药用化学 医学化学
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
背景情况:
- 一种抗痛风药物Febuxostat已经显示出抑制细菌毒性因素的潜力,例如在格兰阴性细菌中抑制定数感应 (QS) 和生物膜形成.
- 然而,对于febuxostat的抗QS活性缺乏结构-活性关系 (SAR) 研究,这限制了新疗法剂的开发.
研究的目的:
- 合成新型的febuxostat类似物,并评估它们的结构-活性关系 (SAR) 对于定数感应 (QS) 抑制.
- 识别具有潜在抗菌活性对格拉姆阳性细菌的类似物,并评估其细胞毒性.
主要方法:
- 合成了27种新型的febuxostat类似物.
- 使用野生型Chromobacterium violaceum和突变菌株CV026评估QS抑制活性,以区分辅数感应抑制和辅数灭机制.
- 通过确定针对格拉姆阳性和格拉姆阴性细菌的最小抑制度 (MIC) 来评估抗菌活性.
- 使用哺乳动物细胞系 (A549和THP-1) 进行了细胞毒性研究.
主要成果:
- 费布克索斯塔特在比之前报告的度更低时表现出质量灭 (QQ) 活性,抑制了C. violaceum中的紫素生产,而不影响细菌活力.
- 几种类型的药物表现出比febuxostat具有类似或更强的QS抑制活性. 模拟器49在野生型菌株中最有效,而模拟器24在CV026中最有效.
- 七种类型 (26-30,33,和49) 显示出显著的抗菌活性对格拉姆阳性细菌 (MICs 2.540μM),但不是格拉姆阴性细菌.
- 最强效的抗菌类同类,29和30,对A549细胞没有细胞毒性,但对THP-1细胞的耐受性较低.
结论:
- 这项研究为QS抑制的febuxostat类似物提供了有价值的SAR见解.
- 鉴定出具有显著抗菌活性的新型febuxostat衍生物对抗格兰正细菌,具有作为抗QS和抗感染剂对抗多药耐药菌株的潜力.
- 这些发现凸显了用于对抗细菌感染的重新使用和修改费布克索斯塔特的治疗潜力.
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