对有机聚硫化物在人类TRPA1受体上的结合方式的阐释
Balázs Nemes1, Szabolcs László1,2, Balázs Zoltán Zsidó1
1Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary.
Frontiers in physiology
|June 23, 2023
概括
有机聚硫化物通过结合特定的氨酸残留物,主要是C621.1,激活TRPA1受体. 这一发现有助于开发用于缓解疼痛和炎症的新型TRPA1向药物.
科学领域:
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 内源性无机聚硫化物激活了短暂受体潜在的安基林1 (TRPA1) 受体.
- 有机聚硫化物与无机形式相比,具有更高的稳定性和药物潜力.
- 了解有机聚硫化物与TRPA1的精确结合机制对于药物开发至关重要.
研究的目的:
- 为了确定有机聚硫化物在TRPA1受体上的特定结合部位.
- 阐明有机聚硫化物激活TRPA1的分子机制.
- 为开发新型TRPA1向的有机聚硫化物基疗法提供基础.
主要方法:
- 在TRPA1.1中氨酸残留物的局部定向突变发生.
- 在基分子对接中预测结合相互作用.
- 在体外功能测定包括成像和补丁电生理学.
- 放射性标记的摄取量测量.
主要成果:
- 有机聚硫化物在TRPA1.1.的已知电友性激素结合部位内与氨酸残留物 (C621,C641,C665) 结合.
- 半氨酸621 (C621) 在有机聚硫化物结合中起着关键作用.
- 完全取消有机聚硫化物诱导的TRPA1激活需要这些关键的氨酸残留物的组合突变.
结论:
- 已确定TRPA1上有机聚硫化物的结合部位,涉及特定的氨酸残留物.
- 这一发现促进了基于有机聚硫化物的TRPA1向药物的合理设计.
- 这些发现支持有机聚硫化基化合物的潜力,用于开发新型止痛和抗炎疗法.
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