双重的HDAC/NAMPT抑制剂在p53-零白血病细胞中克服了最初的耐药性
Kairui Yue1, Simin Sun1, Enqiang Liu1
1Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266071, China.
European journal of medicinal chemistry
|January 15, 2024
概括
新型的双重抑制剂,向激素脱乙酶 (HDACs) 和尼古丁胺胺酸转移酶 (NAMPT),显示出强大的抗白血病活性. 这些化合物通过诱导亡来克服p53-null急性髓性白血病的抗性.
科学领域:
- 生物化学 生物化学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
背景情况:
- 癌症的发展与代谢和表观遗传失调有关.
- 基因脱乙酶 (HDACs) 是基因表达的关键表观遗传调节剂.
- 尼古丁胺胺酸基转移酶 (NAMPT) 对于细胞代谢和NAD+生物合成至关重要.
研究的目的:
- 设计和合成针对HDAC和NAMPT的新型双重抑制剂.
- 评估这些双重抑制剂对白血病的疗效和特异性.
- 研究它们在p53-null急性髓性白血病 (AML) 中克服抵抗机制的潜力.
主要方法:
- 基于HDAC和NAMPT抑制剂之间结构相似性的合理药物设计.
- 在体外生化测试以确定对HDACs和NAMPT的抑制活性 (IC50值).
- 基于细胞的测试,以评估白血病细胞系中的抗增殖活性和亡诱导.
- 激酶面板选以评估目标特异性.
主要成果:
- 化合物39a和39h显示出强有力的和选择性的抑制HDAC1-3 (IC50:0.71-25.1nM) 与适度的NAMPT抑制.
- 化合物39h表现出高特异性,缺乏对370酶的活性.
- 这两种化合物在白血病细胞中表现出低纳米分子抗增殖活性.
- 双重抑制剂39a和39h有效地克服了p53-null AML细胞系中的抵抗,诱导了亡.
- 尼古丁胺胺单核酸 (NMN) 逆转了细胞死亡,证实了NAD+生物合成途径和HDAC的抑制.
结论:
- 新型HDAC/NAMPT双抑制剂为白血病提供了一个有前途的治疗策略,特别是p53-null AML.
- 这些化合物有效地准表观遗传调节和细胞代谢.
- 双抑制机制克服了与单抑制剂相关的耐药性.
- 这种方法提供了一个可行的策略,以解决当前HDAC抑制剂在治疗特定白血病亚型中的局限性.
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