针对人类TRPM4的小分子抑制剂的结合部位的识别
Babatunde Ekundayo1, Prakash Arullampalam2, Christian E Gerber2
1Laboratory of Biological Electron Microscopy, IPHYS, SB, EPFL, and Dept. Fundamental Microbiology, Faculty of Biology and Medicine, UNIL, Cubotron, Rt. de la Sorge, Lausanne, Switzerland.
Nature communications
|January 19, 2025
概括
研究人员确定了像NBA这样的TRPM4抑制剂的结合部位. 这一发现对于开发针对TRPM4通道的新药至关重要,该通道与心血管疾病有关.
科学领域:
- 结构生物学是结构生物学.
- 分子药理学分子药理学
- 心血管研究的心血管研究.
背景情况:
- 暂时受体潜力拉斯4 (TRPM4) 是一种激活的离子通道,涉及遗传和心血管疾病.
- 了解TRPM4上的抑制剂结合部位对于向药物开发至关重要.
研究的目的:
- 确定人体TRPM4通道内的小分子抑制剂,特别是NBA和IBA的结合部位.
- 为开发新型TRPM4向治疗提供结构性见解.
主要方法:
- 低温电子显微镜 (cryo-EM) 用于确定全身人类TRPM4.4的结构.
- 将TRPM4纳入原生脂质纳米盘中.
- 补丁电生理学实验.
主要成果:
- 人类TRPM4的三个冷EM结构得到了阐明:apo,NBA-bound和IBA-bound.
- 小分子NBA和IBA与由S3,S4,TRP螺旋和S4-S5链接器形成的口袋结合.
- 结构数据验证了小分子TRPM4抑制剂的关键结合部位.
结论:
- 该研究成功地确定并验证了TRPM4.4中NBA和IBA的结合部位.
- 这些发现为合理的药物设计和开发用于心血管疾病的TRPM4抑制剂奠定了基础.
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