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In Vitro Analysis of E3 Ubiquitin Ligase Function
Published on: May 14, 2021
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3--4-基素:合成,合规分析,以及VHL E3 Ubiquitin Ligase对向蛋白质降解的立体选择性识别
Andrea Testa1, Xavier Lucas1, Guilherme V Castro1
1Division of Biological Chemistry and Drug Discovery, School of Life Sciences , University of Dundee , James Black Centre, Dow Street , Dundee DD1 5EH , Scotland, U.K.
Journal of the American Chemical Society
|June 28, 2018
概括
研究人员开发了一种新的氧素 (F-Hyps) 合成方法,发现它们与VHL结合酶结合,可以在PROTAC中用于向蛋白质降解,为药物发现提供了新的工具.
科学领域:
- 医学化学
- 有机合成
- 化学生物学
背景情况:
- 水氧 (Hyp) 在生物系统中至关重要,影响分子识别.
- 虽然基和基是常见的,但基 (F-Hyps) 尚未合成或描述.
- 对于药物设计来说,了解氨酸对氨酸环和胺结合率的修饰效应是关键.
研究的目的:
- 为所有四种3 - - 4 - 基 (F-Hyps) 的实用合成开发.
- 研究F-Hyps的结构和分子特性,包括它们与希佩尔-林道 (VHL) E3结合酶的相互作用.
- 探索F-Hyps作为低氧诱导因子1α (HIF-1α) 和针对蛋白质降解的PROTAC中的生物异构替代物的应用.
主要方法:
- 从4-oxo-l-proline衍生物中轻松合成F-Hyps.
- 使用X射线晶体学,NMR光谱学和量子力学计算进行表征.
- 使用VHL E3结合酶进行结合性研究,包括共晶结构分析和静电电位计算.
- 在PROTAC结合物 (例如MZ1) 中的应用和细胞降解功效的评估.
主要成果:
- 成功合成所有四种3 - - 4 - 基 (F-Hyps) 的二氧化物.
- 化在C3极少影响基结能力,但将首选的罗利丁环从C4-exo转变为C4-endo.
- F-Hyps对VHL E3结合酶进行立体选择性结合,其中偏好的是 (3R,4S) -F-Hyp体.
- 将 (3R,4S) -F-Hyp纳入HIF-1α和PROTAC证明了其作为Hyp bioisostere的功用.
- 使用 (3S,4S) - F-Hyp替代的PROTAC MZ1实现了强大的Brd4选择性细胞降解.
结论:
- 3--4-基是一种具有独特结构和结合性质的新型氨基酸.
- F-Hyps是VHL E3连接酶的有价值的连接体,可以有效地用于针对性蛋白质降解策略.
- 已开发的F-Hyps合成和证明的应用为药物化学和药物发现工作提供了有前途的途径.
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