化学定制的阳离子抗生素辅助剂,向双价子,以克服格拉姆阴性细菌中的碳烯耐药性
Hao Tang1, Xiaomeng Zhao1, Mengsi Sun2
1Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China.
Science advances
|October 22, 2025
概括
一种新的离子辅助剂,TINA,有效地打击超级细菌中的金属β-乳糖酶 (MBL) 耐药性. 它通过向MBL和脂聚糖 (LPS) 来恢复抗生素的有效性,为抵抗耐药格兰氏阴性病原体提供了一个有希望的策略.
科学领域:
- 化学生物学是化学生物学.
- 抗微生物耐药性 抗微生物耐药性
- 药物发现 药物发现
背景情况:
- 金属β-乳酸酶 (MBLs) 赋予了格拉姆阴性病原体对卡巴胺的耐药性.
- 双价离子对MBL活性和脂多糖 (LPS) 结构至关重要,有助于内在和获得的耐药性.
- 现有的抗生素辅助剂无法克服MBL介导的耐药性.
研究的目的:
- 开发新型抗生素辅助剂,克服MBL耐药性.
- 为了识别针对MBL酶和细菌膜结构的化合物.
- 为了恢复耐药格拉姆阴性细菌对卡巴胺抗生素的敏感性.
主要方法:
- 离子辅助剂的化学工程来增强MBL抑制.
- 坐标选用于识别化合物.
- 在体外对各种产生格兰阴性ESKAPE病原体的金属β-乳糖酶-1 (NDM-1) 进行检测.
- 在细菌性肺炎模型中的体内疗效研究.
主要成果:
- 工程化阳离子辅助剂显示出高达5885倍的增强MBL抑制.
- 提奥普罗宁工程离子辅助剂 (TINA) 完全恢复了对NDM-1产生ESKAPE细菌的卡巴胺敏感性.
- TINA针对MBL和LPS,剥夺双价来抑制MBL并破坏细菌膜.
- TINA证明了细菌性肺炎在体内安全有效的治疗,血清吸附量最小.
结论:
- 丁娜是一种强效的抗生素辅助剂,有效对抗抗卡巴胺耐药的格拉姆阴性病原体.
- 由TINA对MBL和LPS的双重准提供了一种防止电阻演变的策略.
- 阴离子材料代表了开发针对全球重要超级细菌的新疗法的一个有前途的平台.
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