对β-catenin/B细胞淋巴瘤9蛋白与蛋白相互作用的选择性小分子抑制剂的合理设计
Logan R Hoggard1, Yongqiang Zhang1, Min Zhang1
1Department of Chemistry, Center for Cell and Genome Science, University of Utah , Salt Lake City, Utah 84112-0850, United States.
Journal of the American Chemical Society
|September 10, 2015
概括
研究人员设计了小型有机分子来选择性地抑制α-螺旋蛋白-蛋白相互作用 (PPI). 这些新型抑制剂向β-catenin/BCL9相互作用,为癌症治疗提供了潜力.
科学领域:
- 医学化学
- 化学生物学
- 分子生物学
背景情况:
- 阿尔法螺旋介导的蛋白与蛋白相互作用 (PPI) 在生物过程中至关重要.
- 用小分子向这些PPI提供治疗潜力.
- 了解热点相互作用是设计选择性抑制剂的关键.
研究的目的:
- 设计和合成可选择性抑制α螺旋介导PPI的小型有机分子.
- 开发针对β-catenin/BCL9 PPI而不是β-catenin/cadherin PPI的抑制剂.
- 探索这些抑制剂在Wnt/β-catenin依赖癌症中的治疗潜力.
主要方法:
- 使用HippDB数据库识别热点特征的蛋白质数据库的数据挖掘.
- 一个仿真阿尔法螺旋热点结合的通用支架的设计.
- 小分子抑制剂的合成和表征.
- 定位突变和结构-活性关系 (SAR) 研究以确定结合模式.
主要成果:
- 基于热点分析设计了一种全新的通用支架.
- 合成了一系列对β-catenin/BCL9 PPI具有选择性的小分子抑制剂.
- 抑制剂被证明可以选择性地破坏比β-catenin/ cadherin的β-catenin/ BCL9相互作用.
- 抑制剂抑制了Wnt信号,降低了目标基因,并抑制了癌细胞的生长.
结论:
- 通过小有机分子可以选择性抑制α螺旋PPI.
- 设计的抑制剂提供了针对Wnt/β-catenin信号的新策略.
- 这些发现为开发有关癌症的新疗法铺平了道路.
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