乌拉导向的连接连接:一种有效的策略,用于乌拉DNA糖化酶 (UNG) 抑制剂的发展
Yu Lin Jiang1, Daniel J Krosky, Lauren Seiple
1Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, Maryland 21205, USA.
Journal of the American Chemical Society
|December 8, 2005
概括
研究人员开发了一种新的 uracil-directed 连接器连接策略,以找到 uracil DNA 糖酶 (UNG) 的抑制剂. 这种方法迅速发现了新的小分子抑制剂,向酶.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 酶学 是一种酶学.
背景情况:
- 乌拉DNA糖酶 (UNG) 对于DNA修复,抗体多样性,病毒复制和抗癌药物的有效性至关重要.
- UNG利用一个额外螺旋式识别机制从DNA中切除 uracil 基.
- 用小分子准UNG是一个有前途的治疗干预策略.
研究的目的:
- 为发现人类 uracil DNA glycosylase (UNG) 的小分子抑制剂制定一个有效的策略.
- 为了利用酶的螺旋外识别机制来设计抑制剂.
- 快速识别具有潜在治疗应用的新型抑制剂.
主要方法:
- 开发了一种使用 uracil 化和 alkyloxyamine 链接剂的 uracil 导向的连接体绑定策略.
- 利用螺旋外识别机制来准UNG的活跃站点.
- 随机探索了通过与多种类型的化物结合元素结合而无需化合物净化而形成的外围结合口袋.
主要成果:
- 成功确定了第一个具有微分子到亚微分子结合亲和性的人类UNG小分子抑制剂.
- 发现基于 uracil 的配体结合于活性部位和第二个非竞争性部位.
- 不具有竞争力的部位表明,在UNG的机制中, uracil 有一个暂时的结合部位.
结论:
- uracil 导向的连接器绑定策略是发现 UNG 抑制剂的有效方法.
- 确定第二个结合位点为UNG的基质识别机制提供了新的见解.
- 这一总体策略可以适应开发其他核基识别酶的抑制剂,包括DNA修复酶.
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