发现SKP2-招募PROTACs用于目标蛋白降解的发现
Guanjun Dong1,2,3, Aima Huang1,2,3, Ziqing Zhao1,2,3
1School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 4, 2026
概括
这项研究表明,S相激酶相关蛋白2 (SKP2) 可以用新型的PROTACs用于向蛋白质降解 (TPD). 这些SKP2招募分子有效降解BRD4和雄激素受体 (AR) 等标蛋白.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 针对蛋白质溶解的嵌合体 (PROTACs) 提供了一种针对蛋白质降解 (TPD) 的新疗法策略.
- 对于TPD来说,利用广的E3连接酶库仍然是一个挑战,目前仅使用少数几个连接酶.
- S相酶相关蛋白2 (SKP2) 是库林环酶1 (CRL1) 子家族中的基质受体.
研究的目的:
- 使用选择性,非共价招募器研究SKP2作为TPD的E3结合酶的潜力.
- 设计和合成新的SKP2招聘PROTACs.
- 评估这些PROTACs在降解BRD4和雄激素受体 (AR) 等标蛋白中的有效性.
主要方法:
- 通过将SKP2结合剂SL1与BRD4抑制剂JQ1.1.连接起来,合成SKP2招募的PROTACs.
- 评估MV-4-11细胞中的BRD4降解和22RV1细胞中的雄激素受体 (AR) 降解.
- 机理学研究涉及到无处不在的测试,蛋白质酶和缩依赖性,以及SKP2淘汰/淘汰实验.
主要成果:
- 合成的PROTACs在MV-4-11细胞中有效诱导BRD4降解,最强的化合物 (2-1) 显示DC50为298nM.
- 证实退化依赖于蛋白质酶和缩,并通过SKP2操纵来挽救.
- 在22RV1细胞中,SKP2导向的PROTACs证明了AR的有效降解.
结论:
- 通过非共价PROTACs,SKP2可以成功地用于向蛋白质降解 (TPD).
- 这扩大了用于TPD治疗应用的E3结合酶的范围.
- 基于SKP2的PROTAC有望在各种癌症中准经常过度表达的蛋白质.
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