选择性,第一类激酶抑制剂的发现和表征
Joshua J Maw1, Jesse A Coker1, Tarun Arya1
1Center for Therapeutics Discovery, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, United States.
Journal of medicinal chemistry
|February 8, 2024
概括
研究人员开发了C3TD879,这是首个针对激酶 (CITK) 的选择性化学探针. 这种探针抑制了CITK的活动,提供了一个研究其在癌症和细胞分裂中的作用的工具.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 激酶 (CITK) 是一个AGC家族激酶,调节细胞动力学.
- CITK被认为是一种抗癌标,但缺乏选择性抑制剂.
研究的目的:
- 开发了第一个选择性化学探针,用于激酶 (CITK).
- 研究CITK的激酶活性与其结构功能的作用.
主要方法:
- 将一个弱的非位抑制剂转化为一种强大且有选择性的CITK探针 (C3TD879).
- 生物化学测试 (IC50),细胞向参与 (NanoBRET Kd) 和选择性分析 (>373激酶).
- 小分子抑制剂效应与CITK在细胞增殖,细胞循环和细胞动力学试验中的降低效应的比较.
主要成果:
- C3TD879强烈抑制CITK (IC50=12nM),并直接结合到细胞中 (Kd<10nM).
- 对CITK进行工程精致的选择性 (>17倍超过373基因酶),具有有利的DMPK特性.
- 小分子CITK抑制剂未能对细胞增殖,细胞循环或细胞动力学产生CITK倒退效应进行表.
结论:
- C3TD879是第一个用于查询CITK生物学的化学探测器.
- 初步证据表明,CITK在细胞过程中的结构性作用可能比其激酶活性更为关键.
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