小分子激动剂结合的三角类阿片类受体-Gi复合体的冷-EM结构使得发现有偏见的化合物成为可能
Lin Cheng1,2, Zhuang Miao1, Sicen Liu1,3,4
1Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Nature communications
|September 27, 2024
概括
用冷EM确定了三角类阿片类受体 (δOR) 结构,揭示了对其激活和信号的洞察力. 这项研究链接 δOR.
科学领域:
- 药理学 药理学是指药理学的学科.
- 结构生物学 结构生物学
- 神经科学是一个神经科学.
背景情况:
- 德尔塔阿片类受体 (δOR) 对于调节人类的感觉和情绪至关重要.
- 它具有低风险的药物依赖特征,使其成为治疗开发的有吸引力的目标.
- 然而, δOR激活机制,信号通路和副作用相关性仍然不太清楚.
研究的目的:
- 阐明小分子激动剂的 δOR 激活的结构基础.
- 为了研究 δOR.所参与的复杂信号通路.
- 探索 δOR 信号偏差与生物功能/副作用之间的关系.
主要方法:
- 低温电子显微镜 (cryo-EM) 用于确定与激动剂ADL5859.9结合的δOR-Gi复合物的结构.
- 化学探针的设计,以分析受体-连接体相互作用部位.
- 使用化学工具ADL06研究β-arrestin通路在δOR功能中的作用.
主要成果:
- 确定了 δOR-Gi复合物的冷-EM结构与小分子激动剂.
- 确定了一个参与 δOR 信号偏差的区域.
- 建立了 δOR 招募β-arrestin 和降低胃肠机动性之间的潜在联系.
结论:
- 增强对 δOR 结构,激活和信号通路的理解.
- 提供了关于 δOR β-arrestin通路参与的功能后果的见解.
- 奠定了基于结构的药物发现的基础,以 δOR为目标.
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