通过小分子激活TMEM175的结构洞察
Xuewu Zhu1, Meixuan Ping2, Heng Liu3
1Zhongshan Institute for Drug Discovery, SIMM, Zhongshan 528400, China; Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
通过清除有毒的α-synuclein,可以治疗帕金森病 (PD). 这项研究揭示了TMEM175的开放结构与新型激动剂,为新的PD疗法铺平了道路.
科学领域:
- 结构生物学
- 神经科学
- 药物发现
背景情况:
- 帕金森病 (PD) 的特征是α-同核素聚合.
- 跨膜蛋白175 (TMEM175) 是一种潜在的PD治疗点.
- 了解TMEM175激素的结构是开发PD治疗的关键.
研究的目的:
- 通过冷电子显微镜 (cryo-EM) 确定人体TMEM175复合剂的结构.
- 阐明 TMEM175 激素激活的机制.
- 评估TMEM175激动剂在清除α-synuclein和恢复神经元功能的治疗潜力.
主要方法:
- 用冷电子显微镜 (冷电子显微镜) 进行结构测定.
- 表面等离子体共振 (SPR) 和结合分析的突变发生.
- 整体内分泌体补丁和分子动力学模拟用于功能和机械洞察.
主要成果:
- 确定了人类TMEM175与激动剂DCY1020,DCY1040和TUG-891的第一个冷EM结构,揭示了开放的构造.
- 激动剂DCY1020/1040在子单元接口上结合,诱导开放状态,由TUG-891协同增强.
- 这些激动剂被证明可以促进与PD相关的TMEM175变体的神经元的α-synuclein去除和恢复功能.
结论:
- 这项研究为TMEM175激应提供了结构基础,对帕金森病药物发现至关重要.
- TMEM175激动剂在降低病理性α-synuclein水平方面具有潜力.
- 针对TMEM175为帕金森病提供了一个有前途的治疗策略.
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