结合ATP的磁带输送体调解和调节Clostridioides difficile中的甲尼醇耐药性
Teng Xu1, Ying Zhou2, Qingqing Xu1
1Institute of Antibiotics, Huashan Hospital, Fudan University, Key Laboratory of Clinical, Shanghai, China; Pharmacology of Antibiotics, Ministry of Health, Shanghai, China.
在Clostridioides difficile中,美特罗尼醇耐药性与ABC转运体有关. 准cd17530基因降低了耐药性,这表明排泄在抗生素疗效方面发挥了作用.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 在Clostridioides difficile中对甲尼达 (MTZ) 的耐药性降低了治疗的有效性.
- ABC (ATP结合盒) 载体与多种药物耐药性有关.
研究的目的:
- 研究ABC家族载体在C. difficile中对MTZ耐药性的作用.
- 为了描述cd17530基因对MTZ流动的特定贡献.
主要方法:
- 使用一种耐美트로尼达的C. difficile菌株 (sh182IR).
- 采用了ClosTron突变发生法来禁用cd17530基因.
- 使用光基板评估出流能力并确定最小抑制度 (MIC).
- 分析了上游转录因子基因cd17520.20中的突变.
主要成果:
- 耐MTZ菌株过度表达了ABC多药物排泄组件.
- cd17530的突变发生显著降低了流量容量和MTZ MIC.
- 修复cd17530恢复了正常的流量和MTZ易感性.
- 在cd17520中发生的一种框架转移突变导致了ABC转运基因的上调调节,这可能有助于抵抗.
结论:
- 特别是涉及cd17530的ABC载体活动,在C. difficile中对MTZ耐药性起着重要作用.
- 对cd17520转录因子的调节失调可能会导致ABC输送体表达和MTZ抗性的增加.
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