在BMAL1中罕见的变异与神经发育综合征有关
Vishnu Anand Cuddapah1,2, Dechun Chen3,4, Bumsik Cho3,4
1Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX 77030.
概括
对于分子时钟至关重要的BMAL1基因的极罕见变异与神经发育障碍有关. 这些BMAL1变异导致发育迟缓和自闭症谱系障碍,影响昼夜节律和记忆力.
科学领域:
- 遗传学 遗传学 是一个
- 神经科学是一个神经科学.
- 时间生物学 时间生物学
背景情况:
- BMAL1是分子时钟的核心组成部分,调节昼夜节律.
- 其他分子时钟基因的变异通常会导致孤立的昼夜表型.
- 神经发育障碍的临床谱和遗传基础是复杂的.
研究的目的:
- 为了研究超稀有BMAL1变异在人类疾病中的作用.
- 描述已识别的BMAL1变异的功能后果.
- 探索BMAL1功能与神经发育表型之间的联系.
主要方法:
- 国际基因匹配用于识别具有超罕见BMAL1变异的个体.
- 在培养细胞中使用 luciferase 记者来评估昼夜节律中断的功能性测试.
- 在Drosophila体内进行体内研究,以评估行为节奏和记忆缺陷.
主要成果:
- 确定了10名具有超罕见异性BMAL1变异的个体,其中包括5名新人.
- 观察到发育迟缓和自闭症谱系障碍的共同临床综合征,随着变化的睡眠障碍,发作和马尔法诺状习惯.
- 证明BMAL1变体对昼夜节律造成功能丧失和功能增益的影响,并破坏PER2 mRNA循环.
- 证实了对Drosophila的行为节奏和记忆缺陷的变异依赖性影响.
结论:
- 在BMAL1基因中超罕见的变异有助于神经发育障碍.
- BMAL1变异与包括发育迟缓,自闭症谱系障碍和昼夜节律异常在内的综合征有关.
- 通过BMAL1变体破坏核心分子钟会影响神经发育过程.
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