不同HDAC复合物的抑制剂的有效性和选择性
Wiktoria A Pytel1,2, Urvashi Patel1,3, Joshua P Smalley1,3
1Institute for Structural and Chemical Biology, University of Leicester, Leicester LE1 7RH, U.K.
Journal of the American Chemical Society
|September 25, 2025
概括
基氨酸脱乙酶 (HDAC) 抑制剂表现出复合体依赖活性,而异醇酸盐显著改变功效. 评估HDAC抑制剂在它们的原生复合体内对于了解体内疗效至关重要.
科学领域:
- 生物化学和分子生物学
- 表观遗传学和基因调控
- 药理学和药物发现
背景情况:
- 一类基因脱乙酶 (HDAC) 是基因转录的关键调节剂和重要的治疗点.
- 在多种多种蛋白质复合体中,HDAC1-3作为催化子单元起作用,但在这种情况下很少研究抑制剂.
- 异醇酸盐等异调节剂对HDAC抑制剂活性的影响仍未得到充分研究.
研究的目的:
- 研究多种HDAC抑制剂的复合依赖性.
- 评估伊诺酸盐对HDAC抑制剂功能的影响.
- 评估HDAC抑制剂在体外与体内的相关性.
主要方法:
- 对7种不同的HDAC复合物进行了多种HDAC抑制剂的测试.
- 研究了因诺酸盐对抑制剂效果的影响,特别是胺类与足口袋组.
- 使用基于细胞的测试来测量基因组乙化和HDAC降解.
主要成果:
- 尽管向相同的酶,但HDAC抑制剂的表现显著依赖于特定的HDAC复合物.
- 伊诺西酸盐对特定的胺抑制剂的功效产生了显著的复杂选择性降低.
- 观察到因因诺酸盐存在的体外和体外强度之间的潜在差异.
结论:
- HDAC 抑制剂的有效性受到特定的 HDAC 复合物和像伊诺西酸盐这样的全调节剂的存在的深刻影响.
- 用于HDAC1/ 2选择性的山胺抑制剂在酸存在时显著改变功效.
- 未来对HDAC抑制剂 (HDACi) 的评估必须考虑它们在原生复合体和生理条件中的行为,以准确地预测体内.
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