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开发一种具有治疗潜力的全粘附GPCR纳米体

Yuan Zheng¹, Dan Jiang^2,3,4, Yan Lu^2,3

¹Department of Physiology and Pathophysiology, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China.

Nature chemical biology

|May 15, 2025

概括

研究人员开发了一种新型的纳米体,Nb23-bi,它以基调节ADGRG2受体. 这种纳米体促进脱水素氨 (DHEA) 反应,逆转与疾病相关的缺陷,并为其他粘附G蛋白结合受体 (aGPCRs) 提供模板.

科学领域:

生物化学和结构生物学.
药理学和药物发现
细胞和分子生物学是细胞和分子生物学.

背景情况:

对G蛋白结合受体 (GPCRs) 的度调节通过微调反应和减少副作用提供治疗优势.
粘附性GPCRs (aGPCRs),以大N端域为特征,为开发全调节剂提供了独特的机会.
针对ADGRG2,一个特定的aGPCR,对于理解和治疗相关功能障碍至关重要.

研究的目的:

设计和描述一种针对ADGRG2.2.的N端片段的新型纳米体.
阐明纳米体调节ADGRG2活性及其对脱水氨 (DHEA) 的反应的全性机制.
在ADGRG2相关功能障碍的临床前模型中评估纳米体的治疗潜力.

主要方法:

纳米体设计和选择针对ADGRG2 N-终端碎片.
结构特征,交联质谱和突变分析来定义分子相互作用.
分子动力学模拟研究由纳米体结合引起的构造变化.
使用动物模型进行体内研究,以评估丸炎症等疾病的治疗疗效.

主要成果:

开发了一种特定的纳米体Nb23-bi,它与ADGRG2 N-终端片段结合.
证明Nb23-bi可以促进DHEA诱导的ADGRG2激活,并逆转由特定突变引起的功能障碍.
结构和模拟研究揭示了Nb23-bi对DHEA结合口袋的作用的全性机制.
在动物模型中,nb23-bi证明了它的有效性,缓解丸炎症和纠正突变缺陷.

结论:

对ADGRG2成功开发了一种全质纳米体 (Nb23-bi),提供了一种新的治疗策略.
这项研究提供了对aGPCRs,特别是ADGRG2.2的全调节机制的见解.
这项工作为开发其他aGPCR具有潜在的生物和治疗应用的类似性纳米体建立了框架.

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