通过可逆和不可逆共价PROTAC有效的向降解
Ronen Gabizon1, Amit Shraga1, Paul Gehrtz1
1Department of Organic Chemistry, The Weizmann Institute of Science, Rehovot 7610001, Israel.
Journal of the American Chemical Society
|May 6, 2020
概括
可逆共价PROTAC为向蛋白质降解提供了一种有效和选择性的方法,克服了传统方法的局限性. 这项研究表明它们在降解Bruton
科学领域:
- 化学生物学
- 药物发现
- 分子降解技术
背景情况:
- 化向基因组 (PROTACs) 能够向蛋白质降解,但由于需要强大的结合剂而受到限制.
- 同价PROTACs具有增强的功效,但可以否定PROTACs的催化性质.
- 可逆共价PROTAC的目的是将共价结合与催化再生的好处结合起来.
研究的目的:
- 研究可逆共价PROTACs对向蛋白质降解的疗效.
- 将可逆共价PROTAC与非共价和不可逆共价PROTAC的性能进行比较.
- 在临床相关的模型系统中评估PROTACs,布鲁顿氨酸激酶 (BTK).
主要方法:
- 针对BTK的非共价,不可逆共价和可逆共价PROTAC的设计和合成.
- 评估蛋白质降解效率 (DC50) 和降解百分比.
- 在患者衍生的慢性淋巴细胞白血病细胞中评估B细胞激活抑制和BTK降解.
主要成果:
- 所有测试的PROTAC都实现了有效的BTK降解 (<10nM DC50,降解>85%).
- 可逆共价PROTACs表现出强烈的降解,其中一种化合物表现出增强的选择性.
- 与易布鲁替尼相比,PROTACs在原发性白血病细胞中表现出更强的B细胞激活和BTK降解抑制.
结论:
- 可逆共价PROTACs对向蛋白质降解有效,比现有方法具有优势.
- 开发的PROTAC显示出治疗慢性淋巴细胞白血病等B细胞恶性瘤的前景.
- 这些发现支持对具有挑战性的治疗点的共价PROTACs的开发.
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