一个Period1诱导器特别推进了小鼠的昼夜钟
Yoshifumi Takahata1,2,3, Yuki Kasashima3, Takuya Yoshioka3
1Department of Genome Editing Research and Development Unit, Graduate School of Dentistry, University of Osaka, Osaka 565-0871, Japan.
一种新的化合物,Mic-628,可以通过诱导Period1 (Per1) 表达来快速推进哺乳动物的昼夜时钟. 这为时差引起的昼夜节律障碍提供了潜在的治疗策略.
科学领域:
- 时间生物学 时间生物学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 超午线的旅行会扰乱昼夜节律,尤其是在从西到东的旅行时,由于难以推进内体时钟.
- 之前的研究表明,短暂的哺乳动物Period1 (Per1) 诱导可以提前时钟阶段.
研究的目的:
- 为了确定一个特定的诱导器的Per1为快速昼夜时钟阶段的进步.
- 为了研究一种新的Per1诱导器,Mic-628.8的分子作用机制.
- 评估Mic-628在加速小鼠重新训练转移光暗周期中的有效性.
主要方法:
- 给小鼠服用Mic-628并评估行为节奏.
- 分析了Mic-628和CRYPTOCHROME1 (CRY1) 之间的相互作用.
- 调查Per1促进体调节和PER1在反抑制中的作用.
- 对昼夜时钟动态的数学建模.
主要成果:
- 微-628诱导了小鼠行为节奏的快速阶段推进,不管给药时间如何.
- 接受了mic-628治疗的小鼠显示,重新训练到发达阶段的光暗周期的速度明显更快.
- 微-628通过CRY1相互作用促进了CLOCK-BMAL1组合,从而导致特定的Per1诱导.
- PER1抑制了Mic-628驱动的Per1诱导,CRY1和PER1都固定了Per1诱导的阶段.
结论:
- Mic-628是一种强大的Per1诱导剂,能够推进昼夜时钟阶段.
- 该机制涉及便利的CLOCK-BMAL1组装和CRY1和PER1.1的双重调节.
- 选择性Per基因表达调制为昼夜节律障碍提供了一个有希望的治疗途径.
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