七种人类基因组胺H3受体异型体的药理学表征
Meichun Gao1, Mabel E Dekker1, Rob Leurs1
1Department of Medicinal Chemistry, Amsterdam Institute of Molecular Life Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, the Netherlands.
European journal of pharmacology
|February 22, 2024
概括
这项研究揭示了组胺H3受体 (H3R) 拼接变体之间的独特药理学特征. 较短的H3R异构体对激动剂和逆激动剂表现出改变的结合亲缘关系,影响神经系统疾病的药物发现.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 组胺H3受体 (H3R) 是一种前突触G蛋白合受体,调节神经递质释放,是神经元疾病的点.
- 存在7种人类H3R拼接变体,在细胞内循环3和/或C-终端尾巴长度上有所不同,但都通过G_i蛋白传递信号.
- 过去的H3R药物发现仅集中在H3R-445参考异型上.
研究的目的:
- 从药理上描述所有七种人类H3R拼接变体.
- 在所有异构体中确定参考H3R激动剂和逆激动剂的结合亲缘关系.
- 为了确定与药物开发相关的H3R异形药理学中的潜在差异.
主要方法:
- 七种H3R拼接变体的药理学表征.
- 确定对H3R激动剂和逆激动剂的结合亲缘关系.
- 使用cAMP生物传感器测定来评估构成性活动.
主要成果:
- H3R-453,H3R-415和H3R-413异型表现出类似于H3R-445.5的结合亲和力.
- 较短的异构体 (H3R-329,H3R-365,H3R-373) 显示出较高的激素结合亲和力.
- H3R-365和H3R-373显示逆agonist结合亲和力降低和更高的构成性活性.
结论:
- 在H3R拼接变体之间存在显著的药理差异,特别是在较长和较短的异构体之间.
- 在较短的异型中改变的结合亲和性和构成性活性需要在H3R药物发现中考虑.
- 未来的H3R向疗法应该考虑到这些拼接变体的独特药理学.
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