通过准Pseudomonas aeruginosa中的PqsR来探索海洋天然产品作为潜在的定数感知抑制剂:虚拟查辅助结构动力学研究
Manikandan Jayaraman1, Vijayakumar Gosu2, Rajalakshmi Kumar3
1Structural Biology and Bio-Computing Lab, Department of Bioinformatics, Science Block, Alagappa University, Karaikudi, Tamil Nadu, India.
PloS one
|March 28, 2025
概括
研究人员通过向PqsR蛋白来确定海洋天然产品来对抗抗生素耐药的Pseudomonas aeruginosa. 这些化合物显示出开发新疗法对抗这种危险的病原体的希望.
科学领域:
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
- 计算化学计算化学
背景情况:
- * Pseudomonas aeruginosa 是一种多药耐药的病原体,导致严重的医院感染.
- * 针对细菌的定数感应 (QS) 提供了一种新的抗菌战略.
- * PqsR蛋白对于P. aeruginosa的生物膜形成至关重要.
研究的目的:
- * 通过基于结构的虚拟查 (SBVS) 来识别海洋天然产品 (MNPs) 作为P. aeruginosa PqsR蛋白的潜在抑制剂.
- * 评估已识别的化合物的药物相似性和化学反应性.
- *为了验证MNP与PqsR目标的结合稳定性和相互作用.
主要方法:
- * 高通量虚拟查 (HTVS) ~37,000个MNP对抗P. aeruginosa PqsR.
- *对接模拟 (SP,XP),MM-GBSA,QikProp和DFT计算. 这是一个非常好的方法.
- *分子动力学模拟 (MDS) 来评估复杂的稳定性和结合的自由能量 (BFE).
主要成果:
- * 确定了10个领先的MNP,具有有利的对接分数和结合的自由能量.
- * 有前途的候选人CMNPD14329,CMNPD23880,MNPD13399,MNPD13725被选中. 这些候选人都是有前途的候选人.
- *MDS证实了PqsR结合口袋内的稳定相互作用,突出了关键的疏水性残留物.
结论:
- *SBVS成功地确定了P. aeruginosa PqsR.的潜在MNP抑制剂.
- * 选择的MNP可以作为开发新型抗伪药剂的有希望的支架.
- *需要进一步的实验验证,以确认治疗疗效.
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