一种用于成像和消灭耐药格拉姆阴性细菌的双功能的原药
Jiahao Zhuang1, Ya Liu1,2, Dandan Wang1
1Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore.
ACS nano
|August 26, 2025
概括
新的抗菌药物向的是格兰阴性细菌中的IspH酶. 结合成像剂和抑制剂可以克服细胞透问题,从而有效地消灭细菌并改善感染模型的存活率.
科学领域:
- 微生物学
- 医学化学
- 药物发现
背景情况:
- 格拉姆阴性细菌呈现出越来越强的抗生素抵抗力, 构成全球健康威胁.
- 甲基酸 (MEP) 途径酶 IspH 是一个有前途的抗菌点.
- 阴性IspH抑制剂面临细菌细胞透的挑战,这限制了它们的有效性.
研究的目的:
- 设计和合成新型抗菌剂, 以对抗阴性细菌.
- 为克服IspH抑制剂的细胞透限制.
- 开发一种用于细菌成像和消灭的双重作用剂.
主要方法:
- 聚合诱导的发射光原 (AIEgen) 载体与通过键的IspH抑制剂的结合.
- 用于测试的新化合物 (TNP-NA) 的合成.
- 在体外和体内对包括耐药菌株在内的格兰阴性细菌进行评估.
主要成果:
- 开发的药物有效地消灭了包括*Escherichia coli*,*P. aeruginosa*和*Salmonella*在内的格兰阴性细菌.
- 耐基诺菌株对新药有敏感性.
- 在感染大肠杆菌的小鼠模型中,使用TNP- NA显著提高了生存率.
结论:
- 这种新型与结的AIEgen抑制剂是有效的抗菌剂,可对抗阴性细菌.
- 这种策略克服了IspH抑制剂的细胞透障碍,使细菌能够被消灭.
- 这些发现为开发抗菌药物耐药性的新抗菌疗法提供了有希望的方法.
相关概念视频
Combined Effects of Drugs: Synergism
4.7K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
4.7K
Development of Antibiotic Resistance
197
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
197


