线粒体阻断和表观遗传抑制是先天性心脏病中神经发育缺陷和神经行为缺陷的基础
George C Gabriel1, Hisato Yagi1, Tuantuan Tan1
1Department of Pediatrics and Department of Developmental Biology, University of Pittsburgh, Pittsburgh, USA.
Nature communications
|January 8, 2025
概括
低发性左心综合征 (HLHS) 导致小头症和神经发育问题. 这项研究揭示了小鼠模型中的表观遗传失调和基因表达变化,将HLHS与自闭症和认知缺陷联系起来.
科学领域:
- 发展生物学 发展生物学
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
背景情况:
- 低发性左心综合征 (HLHS) 是一种严重的先天性心脏缺陷,与小头症和神经发育不良结果有关.
- 连接HLHS与大脑发育异常的潜在机制仍然不完全理解.
研究的目的:
- 用小鼠模型研究将HLHS与小头症和神经发育缺陷联系起来的分子机制.
- 为了确定特定的遗传和表观遗传变化,有助于认知障碍和自闭症类似的行为在HLHS.
主要方法:
- 使用了Ohia HLHS小鼠模型与Sap130和Pcdha9突变.
- 进行了转录组分析,DNA甲基化分析和Sap130 ChIP-seq.
- 在突变小鼠中评估了神经发生,亡,学习,记忆和行为.
主要成果:
- HLHS小鼠模型表现出小头症,皮质神经发生障碍和亡增加.
- 转录组和表观遗传分析揭示了自闭症和认知障碍相关基因的失调.
- 观察到REST和CREB信号的乱,以及神经血管合.
- 具有Pcdha9突变或前脑特异性Sap130删除的小鼠表现出学习缺陷和类似自闭症的行为.
结论:
- 表观遗传失调和改变基因表达有助于HLHS的不良神经发育.
- 研究结果表明,细胞自主/非自主缺陷和表观遗传机制是HLHS相关的神经发育问题的基础.
- 这项研究为HLHS的神经生物学后果提供了机制性的见解.
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