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来自Pseudomonas aeruginosa基因组的G-四重复形成序列的基于结构的结合性探索

Martina Fiabane¹, Chiara Platella², Fabiana Diaco³

¹Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena 53100, Italy.

ACS medicinal chemistry letters

|November 19, 2025

概括

细菌G-四复合体 (G4s) 是潜在的抗菌点. 研究人员确定了新的TET22 G4结合剂,但需要更强的稳定性,以获得对病原体的抗微生物疗效,例如Pseudomonas aeruginosa.

科学领域:

生物化学生物化学
微生物学微生物学
药物发现药物发现药物发现

背景情况:

细菌G四复合体 (G4s) 对病原体的生存和耐药性至关重要,作为有前途的抗菌标.
对于细菌G4s,存在有限的结构和连接键结合数据,阻碍了药物开发.
来自Pseudomonas aeruginosa的TET22 G4可以作为探索连接体相互作用的模型.

研究的目的:

评估来自Pseudomonas aeruginosa的TET22 G4的结合性.
为了识别和描述结合并稳定TET22 G4的新型小分子.
评估已识别的配体对人类G4s的选择性及其抗菌潜力.

主要方法:

基于结构的多学科方法,包括基于对接的虚拟选.
生物物理测试 (循环二元化) 来确认结合和稳定.
微生物学测试以确定抗微生物药物的有效性和选择性.

主要成果:

确定了13种假定的TET22 G4沟结合剂 (化合物1-13).
化合物1-13和皮里多斯塔丁 (PDS) 结合并稳定TET22 G4,具有不同的拓偏好.
化合物5和7对细菌TET22 G4比人类端粒G4具有选择性.
对1-13化合物观察到微弱的抗微生物疗效; PDS显示最低抑制度 (MIC) 为100μM.
一些已知的人类G4结合剂对TET22 G4无活性.

结论:

确定了与细菌TET22 G4结合的新联体,表明了抗菌药物开发的潜力.
对于显著的抗微生物活性,TET22 G4的稳定性比1-13化合物所实现的更强是必要的.
细菌G4s对人类G4s的选择性是可以实现的,这对于最小化宿主毒性至关重要.
为了开发有效的抗菌剂,需要进一步优化G4稳定配体.

关键词:

在G-quadruplex中使用.伪omonas空气菌伪omonas空气菌在TET2222中,我们可以使用TET222.抗菌剂是一种抗菌剂.稳定剂稳定剂稳定剂

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