一种针对莱姆病的选择性抗生素
Nadja Leimer1, Xiaoqian Wu1, Yu Imai1
1Antimicrobial Discovery Center, Department of Biology, Northeastern University, Boston, MA 02115, USA.
Cell
|October 7, 2021
概括
一种新型抗生素, 菌素A, 显示为治疗莱姆病的前景. 这种化合物选择性地向Borrelia burgdorferi,为当前的治疗提供了一个节省微生物群的替代方案.
科学领域:
- 微生物学
- 传染性疾病
- 药物发现
背景情况:
- 莱姆病是由Borrelia burgdorferi引起的, 是美国日益严重的公共卫生问题.
- 目前用于莱姆病的广谱抗生素会破坏微生物群并促进抗生素抵抗力.
- 需要针对B. burgdorferi的选择性抗菌剂.
研究的目的:
- 确定一种具有针对Borrelia burgdorferi的选择性活性的化合物.
- 评估潜在的莱姆病新疗剂的疗效和安全性.
主要方法:
- 对土壤微生物进行选择性抗菌活性查.
- 活性化合物的鉴定和表征,素A.
- 在老鼠莱姆病模型中进行的体内疗效研究.
- 与传统抗生素相比,对微生物组的破坏进行评估.
主要成果:
- 鉴定出一种来自Streptomyces hygroscopicus的抗菌素Hygromycin A对B. burgdorferi具有高度的选择性.
- 该化合物向细菌核糖体,并被B. burgdorferi有效吸收.
- 即使通过诱口服,也成功清除了B. burgdorferi感染的小鼠.
- 与临床使用的抗生素相比,该抗生素对便微生物的破坏较小.
结论:
- 素A是一种有前途的选择性抗生素,用于治疗莱姆病.
- 它的向作用和微生物组影响的降低比目前的疗法具有优势.
- 素A可能用于治疗和环境消除B. burgdorferi.
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