设计,合成和生物评估的抗冲流的伊马替尼布衍生物的设计,合成和生物评估
Madiha M Chowdhury1, Priantha Pretheshan1, Nasima S Chowdhury1
1Institute of Pharmaceutical Science, King's College London, London SE1 9NH, U.K.
Journal of medicinal chemistry
|October 25, 2025
概括
研究人员开发了新的伊马替尼药物衍生品,以克服P-glycoprotein (P-gp) 介导的排泄,这是慢性髓性白血病中常见的抵抗机制. 化合物8显示药物流量减少和可比功效,提供了一种有前途的策略来对抗意马替尼抗性.
科学领域:
- 药用化学 医学化学
- 药理学 药理学是指药理学的学科.
- 在瘤学瘤学.
背景情况:
- 伊马替尼是慢性髓性白血病 (CML) 的关键一线治疗方法.
- 过度表达P-glycoprotein (P-gp) 经常会通过活跃地从细胞中抽出药物来引起意马替尼的耐药性.
- 制定克服P-gp介导流出的策略对于改善CML治疗结果至关重要.
研究的目的:
- 设计,合成和评估新型伊马替尼布衍生品,其中包括流出阻断器 (ERB) 碎片.
- 为了减少P-gp介导的流量,并恢复对抗性癌细胞的伊马替尼的疗效.
- 调查这些修饰化合物的结构-活性关系,涉及P-gp流量和激酶抑制.
主要方法:
- 用ERB片段合成了八种新的伊马替尼布衍生物.
- 在基分子对抗P-gp结构以预测流量抑制.
- 在BCR-ABL1+K562和耐药K562/DOX细胞系中的化合物的体外评估.
- 细胞积累测定和基于维拉帕米尔的排放责任评估.
- 确定IC50和LC50值,以评估功效和耐药性.
主要成果:
- 化合物8在敏感细胞中表现出与伊马替尼比拟的强度,并在耐药细胞中减少了排泄.
- 观察到化合物8的细胞内积累和保留得到改善.
- 化合物9在耐药细胞中显示出增强的功效,与更高的细胞内药物水平有关.
- 维拉帕米尔的测定表明,对化合物8和13的排放责任减少了.
- 化合物8显示出有利的治疗指数,表明毒性降低.
结论:
- 具有ERB片段的新型伊马替尼布衍生物可以有效地减轻P-gp介导的药物流量.
- 化合物8是克服CML中意马替尼抗性的有希望的候选物.
- 合理的药物设计针对排泄机制是增强癌症治疗的可行策略.
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