针对性地将 furan-2-carboxaldehydes 改造成迈克尔受体类似物,从而产生具有双重抗活动的长效血红蛋白调节剂
Abdelsattar M Omar1,2, Osheiza Abdulmalik3, Khalid M El-Say4
1Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia.
Chemical biology & drug design
|October 5, 2023
概括
新型芳香性化物衍生物被开发用于改善状细胞疾病 (SCD) 治疗的代谢稳定性. 这些化合物共同结合血红蛋白,抑制红细胞形,并破坏形血红蛋白聚合物的稳定性,提供了一个有前途的治疗进展.
科学领域:
- 药用化学 医学化学
- 血液学 血液学 血液学
- 生物化学 生化学
背景情况:
- 状细胞疾病 (SCD) 是一种普遍的遗传疾病,影响全球数百万人.
- 芳香性化物通过防止血红蛋白聚合和红血细胞 (RBC) 形而显示出SCD治疗的潜力.
- 阿尔德基组的代谢不稳定性限制了治疗的发展,尽管批准了voxelotor.
研究的目的:
- 为SCD治疗设计和合成具有改善代谢稳定性的新型芳香性化物衍生物.
- 研究这些新化合物的功能和生物活性,称为MMA化合物.
- 探索它们在抑制红细胞形和形血红蛋白聚合过程中的作用机制.
主要方法:
- 通过结合迈克尔受体反应中心,从5-基甲基 (5-HMF) 衍生出八种新型MMA化合物的合成.
- 使用逆相HPLC和二硫化物交换反应对血红蛋白相互作用的表征.
- 在不同度 (2mM和5mM) 的实验室中对红细胞形抑制和形血红蛋白聚合物不稳定性的评估.
主要成果:
- MMA化合物在βCys93与血红蛋白发生共价相互作用,与5-HMF的希夫基相互作用不同.
- 观察到显著的红细胞形抑制,在2mM和5mM时从0%到64%不等.
- 通过直接破坏状血红蛋白聚合物的稳定性,确定了状血红蛋白抑制的次要机制,其活性在12%至62%之间.
结论:
- 合成的MMA化合物表现出增强的代谢稳定性和强大的红细胞形抑制活性.
- 这些化合物表现出对SCD病理的双重作用机制:共价血红蛋白修饰和直接的聚合物不稳定.
- 持续的药理学活动和MMA化合物的新机制为推进SCD治疗提供了一个有希望的途径.
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