诺本索摩衍生型 σ2R/TMEM97调制剂的立体异构体的结构-亲和关系
Yan Lu1, Qi Gu1, Stephen F Martin1
1Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712, United States.
研究人员探索了具有B-norbenzomorphan核心的新型西格玛2受体 (σ2R) 配体. 该 (1S,5R) -enantiomers显示较高的亲和力 σ2R/TMEM97,与一些化合物表现出良好的选择性超过 σ1R.
科学领域:
- 药用化学 医学化学
- 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.
背景情况:
- 西格玛2受体 (σ2R),与跨膜蛋白97 (TMEM97) 相同,是神经科学中潜在的治疗点.
- 识别高亲和度和选择性 σ2 R/TMEM97 配体对于开发新疗法至关重要.
研究的目的:
- 对B-norbenzomorphan衍生物进行结构-亲和关系 (SAfiR) 研究,以发现新型 σ2 R/TMEM97 配体.
- 评估这些化合物对 σ2 的结合亲和力和选择性 R/TMEM97 与 σ1 的选择性 R.
主要方法:
- 综合和结合亲和力 (Ki) 评估各种B-norbenzomorphan类似物与s2R/TMEM97和s1R.
- 对反体对和改性皮佩拉津替代物的结构-活性关系分析.
- 计算对接研究以阐明配体-受体相互作用.
主要成果:
- 皮佩拉替代的诺本索摩芬的 (1S,5R) 异构体对 σ2R/TMEM97 的亲和力比它们的 (1R,5S) 异构体高出2-3倍.
- 几种N-基 piperazino (1S,5R) -norbenzomorphans显示高亲和力 (Ki <25nM) 和良好的选择性 (7-16折) 对 σ2 R/TMEM97超过 σ1 R.
- 计算建模揭示了因子体的独特结合姿势,并确定了关键相互作用,包括盐桥和子-π 相互作用,在 σ 结合口袋内.
结论:
- B-norbenzomorphan 支架对开发选择性 σ2 R/TMEM97 配体具有前景.
- 特定的结构修改,特别是piperazine部分的N-化,增强了亲和力和选择性.
- 了解结合相互作用为进一步优化 σ2 R/TMEM97 向治疗提供了基础.
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