甲可不可逆地改变活细胞中的埋藏和暴露的氨酸残留物
Huan Ling1,2, Lin Li1, Liping Duan3
1State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, #345 Lingling Road, Shanghai 200032, China.
Journal of the American Chemical Society
|March 28, 2025
概括
一种新的 lysine 生物结合化学物质 O-cyanobenzaldehyde (CNBA) 能够对 lysine 残留物进行选择性修饰. 这种方法可以绘制成千上万个 lysines 和 kinases 的地图,并开发有针对性的共价药物和抗体-药物结合物.
科学领域:
- 化学生物学
- 蛋白质组学
- 药物发现
背景情况:
- 氨酸残留物是大量且至关重要的,但由于可访问性和硬质障碍,对共价药物开发具有挑战性.
- 现有的方法在选择性地修改复杂生物系统中的氨酸残留物方面存在局限性.
研究的目的:
- 引入一种新的氨酸生物结合化学物质,O-甲 (CNBA),用于氨酸的选择性修饰.
- 证明 CNBA 对全蛋白质组 lysine 映射和向共价药物设计的有用性.
主要方法:
- 在生理条件下开发和应用O-甲 (CNBA) 化学物质用于素修饰.
- 基于活动的蛋白质组概况,以映射活细胞中的氨酸残留物和激酶.
- 蛋白质结晶学和质谱学以确定特定的氨酸位.
- 基于结构的药物设计,将CNBA纳入已知的抑制剂 (Nutlin-3),以实现不可逆转的向作用.
主要成果:
- 通过CNBA的化学反应,可以从lysine-amine中选择性地形成iso-indolinones.
- 基于活动的蛋白质组分析在活细胞中发现了3451个氨酸残留物和85个激酶.
- 证实K271_ABL1和K162_AURKA是共价向的激酶位点.
- 通过使用CNBA修饰的Nutlin-3类似物向K94,从而实现了MDM2- p53相互作用的不可逆转抑制.
- CNBA 显示出抗体与药物结合物的发展潜力.
结论:
- CNBA是一种新型,有选择性和高效的生物结合剂,用于修改活细胞中的暴露和埋藏的氨酸残留物.
- 这种化学在化学生物学,蛋白质组学和向共价疗法和生物结合物的开发中具有广泛的应用.
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