质转录失调的共同模式将亨廷顿病和精神分裂症联系在一起
Nguyen P T Huynh1,2, Mikhail Osipovitch1, Rossana Foti1
1Center for Translational Neuromedicine, University of Copenhagen, Faculty of Health and Medical Sciences, 2200 Copenhagen, Denmark.
Brain : a journal of neurology
|July 19, 2024
概括
亨廷顿病和精神分裂症共享的质病理与抑制的OLIG2和TCF7L2有关,这会影响两个神经系统疾病中的突触功能和髓化.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 亨廷顿病 (HD) 和精神分裂症是不同的神经系统疾病.
- 这两种情况都表现出质细胞异常,包括星状细胞功能障碍和低髓化.
- 研究了这些共同的质病理的共同潜在机制.
研究的目的:
- 为了确定从HD和精神分裂症患者的质原生细胞 (hGPCs) 中共享的分子机制.
- 探索特定基因网络和转录因子在观察到的质病理中的作用.
- 了解质功能障碍如何导致HD和精神分裂症的明显但重叠的症状.
主要方法:
- 来自患者的hGPCs的RNA测序数据的比较相关性网络分析.
- 基因调节网络分析以确定上游调节者.
- 染色体免疫沉测序以确认转录因子的结合.
- 病毒过度表达以评估救生效应.
主要成果:
- 在HD和精神分裂症的hGPC中发现了一个与对照组不同的共享基因网络,hGPCs为突触信号基因进行了丰富.
- 发现关键的转录因子OLIG2和TCF7L2被抑制并调节突触基因的表达,包括ADGRL3.
- 抑制OLIG2和TCF7L2导致ADGRL3的表达减少,这被lentiviral过度表达所挽救.
- 这些发现表明,由于谷氨酸信号调节受损,质细胞功能受损.
结论:
- 融合性质分子病理是HD和精神分裂症中类似的质异常的基础.
- 抑制OLIG2和TCF7L2依赖转录会损害对谷氨酸的质细胞受体性,导致低髓化和突触功能障碍.
- 这种共享的途径突出显示了看似无关的神经疾病中常见的致病机制.
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