相关实验视频
Updated: Jun 26, 2025

10:55
Purification of Ubiquitinated p53 Proteins from Mammalian Cells
Published on: March 21, 2022
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通过USP7参与的分子粘剂对P53进行上调
Zhaoyang Li1, Ziying Wang1, Chao Zhong1
1The State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Huashan Hospital, the Institutes of Brain Science, School of Life Sciences, Fudan University, Shanghai 200438, China.
Science bulletin
|May 11, 2024
概括
研究人员确定了通过准USP7,一个二维基因酶来稳定P53蛋白的分子剂. 美国食品和药物管理局 (FDA) 批准的药物布罗莫克里普丁 (bromocriptine) 显示出显著的效果,抑制癌细胞增殖和瘤生长.
科学领域:
- 化学生物学 化学生物学
- 药物发现 药物发现 药物发现
- 蛋白质稳定性 蛋白质稳定性
背景情况:
- 分子是一种小分子,通过形成三元复合体来诱导蛋白质降解或稳定.
- 识别分子粘剂,特别是那些对P53等标蛋白进行上调的粘剂,是具有挑战性的.
- P53蛋白水平由E3结合酶和二维基提纳酶 (DUB) 调节;稳定P53可能涉及加强其与DUBs的相互作用.
研究的目的:
- 为了识别新型分子剂,可以调节P53蛋白水平.
- 研究分子粘剂稳定P53.3的机制.
- 评估已识别的P53稳定分子的抗癌作用.
主要方法:
- 利用小分子微阵列技术进行无偏查.
- 确定了将P53与二维基因酶USP7.7结合在一起的化合物.
- 验证了作用机制,并评估了体外和体内的抗癌疗效.
主要成果:
- 发现了三种潜在的分子剂,通过激活USP7.7来增加P53水平.
- 美国食品和药物管理局 (FDA) 批准的药物烯 (BC) 通过USP7.7.表现出强大的P53稳定性.
- 在异种移植模型中,BC抑制了癌细胞的增殖,抑制了瘤的生长.
结论:
- 建立了一个选平台,用于识别P53上调分子.
- 烯作为一个分子剂,通过USP7稳定P53,提供治疗潜力.
- 开发的策略可以应用于发现其他分子用于药物发现和化学生物学.
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