在RBM47表达的变化基于黑激素的时间和其对海马内Nrf2活动的影响
Hye-Sun Lim1, Seung Hoon Lee2, Huiyun Seo3
1Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju-si, Jeollanam-do, 58245, Republic of Korea.
Free radical biology & medicine
|September 26, 2023
概括
白天服用黑素可以增强抗氧化作用和神经保护,可能通过RNA结合基因蛋白47 (RBM47) 和Nrf2通路,为神经退行性疾病提供一种新的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 时间生物学 时间生物学
- 分子生物学分子生物学
背景情况:
- 黑素,一种内源性内胺,影响睡眠-清醒周期和昼夜节律,虽然没有直接控制它们.
- 昼夜节律主要由光作用于上神经核 (SCN) 的同步,该核调节黑激素的产生.
- 了解黑素的时间依赖性影响对于优化其治疗潜力至关重要.
研究的目的:
- 为了研究在白天或夜晚不同时间服用黑素的疗效和神经保护作用.
- 探索RNA结合基因蛋白 (RBM) -47和Nrf2在黑激素信号通路中的作用.
- 将这些发现应用于老年痴呆症,老化和神经炎症的动物模型.
主要方法:
- 研究了黑激素的疗效和神经保护,服用时间不同.
- 在海马神经元细胞和小鼠中利用siRNA或CRISPR介导的RBM47的淘汰.
- 在5xFAD/衰老/神经炎症小鼠模型中进行了mRNA分析和分子生物学实验.
主要成果:
- 在小鼠模型中,白天服用黑激素与夜间服用相比,显示出增强的抗氧化作用.
- 新的证据表明,RBM47和Nrf2参与黑激素信号通路,而不管服用时间.
- 根据黑激素的服用时间观察到RBM47的差异表达,RBM47的减少可能会改善海马体的抗氧化防御.
结论:
- 白天服用黑激素可能是一个比夜间服用更有效的抗氧化策略.
- 减少RBM47表达似乎可以增强海马的抗氧化剂防御系统.
- 黑素对RBM47的时间依赖调节为神经保护提供了潜在的治疗途径.
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