发现了调节AP1转录因子ΔFOSB的DNA结合和释放的小分子和可药物槽
bioRxiv : the preprint server for biology
|November 24, 2025
概括
研究人员在ΔFOSB转录因子上发现了一个新的可用药物的位点,使小分子抑制剂的开发成为可能. 这一发现为针对与 ΔFOSB 活动相关的慢性疾病提供了一个新的策略.
科学领域:
- 分子生物学分子生物学
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 德尔塔B (ΔFOSB) 是一种转录因子,涉及与成和其他慢性疾病相关的长期神经适应.
- 包括ΔFOSB在内的AP1转录因子,由于缺乏定义的结合口袋,在药理上很难准.
研究的目的:
- 为了确定小分子干预的 ΔFOSB 上的新药可用位点.
- 探索一种调节AP1转录因子活性的新策略.
主要方法:
- 在DNA结合裂外的ΔFOSB上发现了一个新的小分子结合位点.
- 通过使用含硫酸分子的诱导适合机制进行化合物结合的表征.
- 在体内评估使用CUT&RUN测序来测量ΔFOSB基因组占用率的化合物疗效.
主要成果:
- 在ΔFOSB上发现了一个新的结合部位,容纳小分子,与DNA结合裂不同.
- 硫酸化合物与这个部位结合,诱导构造变化,可能会损害DNA结合.
- 直接给大脑的JPC0661在体内减少了大约60%的ΔFOSB基因组占用率.
结论:
- 设计针对 ΔFOSB 和其他 bZIP 转录因子的小分子抑制剂的新策略已经被揭示出来.
- 鉴定出具有最小序列保存的可药物槽,为开发选择性AP1亚单元抑制剂提供了潜力.
- 这项研究为在异常转录因子活性驱动的条件下进行治疗干预开辟了新的途径.
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