基于结构的非缩性阿佩林受体调节器设计
Wei-Wei Wang1, Su-Yu Ji1, Wenjia Zhang2
1Department of Pharmacology and Department of Pathology of Sir Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; Liangzhu Laboratory, Zhejiang University, 1369 West Wenyi Road, Hangzhou 311121, China; Center for Structural Pharmacology and Therapeutics Development, Sir Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China.
研究人员设计了新的阿佩林受体 (APLNR) 激动剂WN353和WN561,以向心血管疾病. WN561对心脏缩的疗效有所提高,副作用较少,为新型心血管药物提供了潜力.
科学领域:
- 心血管科学
- 药理学
- 结构生物学
背景情况:
- 阿佩林对心血管平衡至关重要,激活阿佩林受体 (APLNR).
- APLNR是心血管疾病的治疗点,但β-arrestin通路的激活会导致不良反应.
- 开发偏向性激动剂对于利用APLNR的治疗潜力而最大限度地减少副作用至关重要.
研究的目的:
- 阐明APLNR信号偏差的结构基础.
- 为了合理设计新的,偏向的阿佩林受体激活剂.
- 在心血管疾病模型中评估设计的激动剂的治疗疗效和安全性.
主要方法:
- 低温电子显微镜 (cryo-EM) 用于确定具有激动剂的APLNR-Gi1复合物的结构.
- 功能测试以评估信号配置文件并确定偏差的决定因素.
- G蛋白偏差激素的合理药物设计 (WN353,WN561).
- 在心脏缩模型中测试治疗效果的病理生理实验.
主要成果:
- 冷-EM结构显示APLNR-Gi1复合体与具有不同的信号配置的激动剂结合.
- 在APLNR中"双热点"被确定为信号偏差的关键决定因素.
- 设计的激动剂WN353和WN561显示有偏差的信号,由冷EM结构证实.
- 与现有的激动剂相比,WN561对心脏缩具有优越的治疗效果,并减少了不良反应.
结论:
- 该研究确定了APLNR信号偏差的结构性决定因素.
- 合理的设计产生了强效和选择性的G蛋白偏差APLNR激活剂.
- 作为治疗心血管疾病的新一代药物,特别是心脏缩,WN561具有更高的安全性.
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