基于雌激素受体-β选择性连接体的结构设计
Eric S Manas1, Rayomand J Unwalla, Zhang B Xu
1Department of Chemical and Screening Sciences, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, USA. manase@wyeth.com
我们使用基于结构的设计优化了雌激素受体-β (ERbeta) 选择性连接体. 微妙的结合口袋差异产生了超过100倍的ERbeta选择性,促进了选择性雌激素受体调节器的发展.
科学领域:
- 药用化学 医学化学
- 结构生物学 结构生物学
- 计算化学计算化学
背景情况:
- 雌激素受体 (ERs) 在生理学和疾病中起着关键作用.
- 选择性向ERalpha和ERbeta对于治疗干预至关重要.
- 由于ERalpha和ERbeta之间具有很高的序列同质性,开发ERbeta选择性配体仍然是一个挑战.
研究的目的:
- 介绍新型ERbeta选择性联结体的基于结构的优化.
- 用X射线晶体学和分子建模阐明选择性的结构基础.
- 通过量子化学计算了解选择性增强的机制.
主要方法:
- 基于结构的药物设计和优化ERbeta选择性连接体.
- X射线共晶学以确定联结体-ERalpha和联结体-ERbeta复杂结构.
- 分子建模和量子化学计算来分析结合相互作用和选择性.
主要成果:
- 同晶体结构揭示了驱动选择性的关键相互作用.
- 分子建模成功利用了ERalpha和ERbeta结合腔中的微妙差异.
- 在结合试验中,优化的配体对ERbeta的选择性超过ERalpha的100倍.
- 在连接体结合口袋中最小的残留物替代足以实现高选择性.
结论:
- 基于结构的设计对于开发高度选择性的ERbeta配体是有效的.
- 了解微妙的绑定口袋差异是实现选择性ER准的关键.
- 这些发现为开发针对ERbeta介导途径的新疗法提供了基础.
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