作为双核受体4A1 (NR4A1) 和NR4A2连接体的双醇衍生物
Srijana Upadhyay1, Amanuel Esayas Hailemariam1, Fuada Mariyam1
1Department of Veterinary Physiology, Texas A&M University, College Station, TX 77843, USA.
双醇化合物 (DIM-3,5和DIM8-3,5) 是NR4A1和NR4A2受体的双联体. 这些强大的瘤生长抑制剂在质母细胞瘤和结肠癌细胞中表现出细胞毒性.
科学领域:
- 分子药理学分子药理学
- 癌症生物学 癌症生物学
- 药物发现 药物发现
背景情况:
- 包括DIM-3,5和DIM8-3,5在内的bis-indole衍生物是已知的NR4A1配体,具有反向激素活性和强大的瘤生长抑制.
- NR4A1和NR4A2连体结合域 (LBD) 之间的结构相似性及其共同的亲瘤作用表明潜在的双重向.
研究的目的:
- 调查之前被确定为NR4A1配体的DIM-3,5和DIM8-3,5类似物是否也与NR4A2活性相互作用和调节.
- 为了评估这些双-英多尔化合物的双NR4A1/NR4A2连接体潜力和细胞毒性作用.
主要方法:
- 使用光结合试验来确定DIM类似物与NR4A1和NR4A2LBDs的结合亲和力 (K_D值).
- 在U87G质母细胞细胞中使用GAL4-NR4A1/NR4A2仿真体进行基于细胞的交换活化试验,评估了功能调制.
- 细胞毒性测定是在U87质母细胞瘤和RKO结肠癌细胞系上进行的.
主要成果:
- 22种合成的DIM8-3,5和DIM-3,5类似物被证明与NR4A1和NR4A2LBD结合,大多数K_D值处于低微分子范围.
- 这些类似物有效地降低了质母细胞瘤细胞中NR4A1和NR4A2依赖的交换活化.
- DIM-3,5和DIM8-3,5类似物都对质母细胞瘤和结肠癌细胞表现出细胞毒性,而DIM-3,5化合物显示出更大的效力.
结论:
- 双醇化合物DIM-3,5和DIM8-3,5作为NR4A1和NR4A2受体的双联体起作用.
- 这些双重NR4A1/NR4A2配体对癌细胞系具有显著的细胞毒性活性,突出显示了它们的治疗潜力.
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