开发和评估作为EPAC1激活剂的福氧乙酸化合物
David Morgan1, Jolanta Wiejak2, Frederick G Powell1
1Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, U.K.
Journal of medicinal chemistry
|March 14, 2026
概括
新的黄酸作为非核酸激动剂,直接通过cAMP 1 (EPAC1) 激活Exchange蛋白. 这些化合物显示出作为抗纤维素剂的潜力,具有良好的安全性.
科学领域:
- 药用化学 医学化学
- 分子药理学分子药理学
- 细胞生物学 细胞生物学
背景情况:
- 由cAMP 1 (EPAC1) 直接激活的交换蛋白与调节Rap信号通路和纤维化发展有关.
- 非核酸激动剂为调节EPAC1活动提供了一个有希望的途径.
研究的目的:
- 识别和表征基于福氧乙酸支架的新型非核酸EPAC1激动剂.
- 评估这些新型化合物的异形选择性,细胞活性和抗纤维素潜力.
主要方法:
- 使用融合合成生成C2多样化的酸乙酸相似物.
- 使用光竞争试验来确定EPAC1和EPAC2异型的参与.
- 基于细胞的测试 (U2OS,人血管内皮细胞) 评估了Rap1激活,IL-6/STAT3信号传递和TGF-β1诱导的肌纤维细胞分化.
- 与已知的药物 (SB525334,nintedanib) 进行实力和细胞毒性比较.
主要成果:
- 几种福酸乙类型对EPAC1比EPAC2具有优越的结合,其中一些小的结构修改调整了这种选择性.
- 像DM243,DM244和DM245这样的化合物有效地增加了EPAC1-转移细胞中的Rap1-GTP水平,而不影响EPAC2或蛋白激酶A活性.
- 在疾病相关的细胞模型中,合成的化合物减弱了IL-6/STAT3信号,并抑制了TGF-β1诱导的纤维细胞向肌纤维细胞过渡,表现出中微分子功效.
- 这种新型化合物虽然不如宁泰达尼布强效,但表现出更有利的细胞毒性概况.
结论:
- 福氧乙酸代表了一种新的非核酸EPAC1激动剂类别,具有作为抗纤维素剂的潜力.
- 这些化合物为开发针对EPAC介导途径的治疗方法提供了一个有希望的支架,具有有利的耐受性窗口.
- 进一步优化为提高功效和开发有效的抗纤维菌药物提供了空间.
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