DNMT1降低调节以及其过度表达明显影响主要是重叠的基因,这些基因与精神分裂症,自闭症谱,和双相情感障碍有关
Minali Singh1, Sonal Saxena2, Kommu Naga Mohan1,2
1Molecular Biology and Genetics Laboratory, Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Hyderabad, India.
Frontiers in molecular neuroscience
|December 21, 2023
概括
无论DNMT1基因表达是否过高或过低,都与自闭症和等神经发育障碍有关. 保持最佳的DNMT1水平对于心理健康至关重要.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
背景情况:
- 过度表达DNMT1与精神分裂症,和双相情感障碍有关.
- 某些遗传变异表明在自闭症谱系障碍中DNMT1表达增加.
- 在小鼠的额叶皮层中失去DNMT1会导致行为异常.
研究的目的:
- 调查DNMT1表达增加和减少对神经发生的影响.
- 分析四种主要神经发育障碍中的10861个基因的转录基因变化.
- 使用Dnmt1神经元建模异常的神经发生.
主要方法:
- 使用Dnmt1神经元作为模型系统.
- 分析了四种神经发育障碍中的10,861个基因的转录组数据.
- 通过多西环林治疗对DNMT1下调的研究效应.
主要成果:
- DNMT1过度表达失调了约30%的基因,影响了神经发生和信号通路,显著比例与有关.
- DNMT1下调失调了~31%的基因,影响了类似的通路.
- ~68%的失调基因在两种条件下都显示出类似的转录水平变化.
- 在恢复正常水平的基因中,核糖体生物发生有意义;DNMT1的缺失调节了参与类似途径的新基因.
结论:
- DNMT1的过度表达和下调都被确定为精神分裂症,,双相情感障碍和自闭症谱系障碍的危险因素.
- 保持DNMT1水平在狭窄范围内对于正常的神经发育和心理健康至关重要.
- 这项研究强调了DNMT1精确基因表达调节在预防神经发育障碍方面的关键作用.
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