双方NRF2激活剂的功能分析,可以克服与年龄相关的慢性疾病的反调节
bioRxiv : the preprint server for biology
|June 12, 2025
概括
激活Nrf2 (核因子红色素2相关因子2) 反对衰老和神经退行. 一种新型化合物HPPE激活Nrf2并抑制Bach1,为与年龄相关的疾病提供了一个有前途的策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 核因素红色素2相关因子2 (Nrf2) 激活是治疗衰老,氧化应激,炎症和神经退行症的治疗策略.
- Keap1通过向蛋白质体降解来调节Nrf2的稳定性;当前的激活剂修改Keap1的醇或取代Nrf2.
- 移位激活剂在基于细胞的测试中由于高的Keap1度和与内源性蛋白质的竞争而失去效力.
研究的目的:
- 在基于细胞的测试中解决Nrf2位移激活剂的功效损失.
- 开发一种特定的Nrf2激活剂,有可能持续使用,并减少副作用.
- 通过针对Nrf2和Bach1.1来探索治疗与年龄相关的神经退行症的新策略.
主要方法:
- 在基于细胞的测试中研究了Nrf2位移激活剂功效丧失的原因.
- 设计和分析了一种具有化烟酸部分的细胞透性Nrf2.
- 利用转录组分析来确认选择性的Nrf2通路激活.
- 评估了对异环碳胺HPPE的Nrf2激活和Bach1抑制特性.
主要成果:
- 在细胞和组织中Keap1的高微分子度解释了排位激活剂的功效降低.
- 一个与烟酸结合的Nrf2选择性地激活了Nrf2遗传程序,证明了向特异性.
- HPPE证明了Nrf2激活和Bach1抑制的结合,绕过了反调节.
结论:
- 向Keap1提供基化剂的向输送为Nrf2激活提供了一种特定的方法.
- HPPE是一个有前途的双方激活器,具有双重Nrf2和Bach1准能力.
- 在治疗与年龄相关的神经退行性疾病方面,HPPE具有优化潜力.
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