在稀少的神经元子集中增加的补充C4诱导了前额叶皮层在网络范围内的转录基因变异
bioRxiv : the preprint server for biology
|June 12, 2025
概括
在小鼠神经元中稀少补充C4基因过度表达引发了大脑网络的广泛变化. 这表明局部补体失调可以破坏神经电路,可能导致精神分裂症等神经系统疾病.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 补体 (C) 途径对免疫至关重要,但其失调可能导致组织损伤.
- 在大脑中,补充蛋白质会影响突触可塑性,它们的失调与神经系统疾病有关.
- 局部补充剂上调对更广泛的皮质网络的影响尚不清楚.
研究的目的:
- 研究局部补充C4基因过度表达如何影响神经回路.
- 探索补充失调可能破坏大脑功能的潜在机制.
- 评估小鼠模型对人类神经和精神疾病的相关性.
主要方法:
- 过度表达的精神分裂症 (SCZ) 风险基因C4在小鼠前额叶皮层神经元的小子集使用子宫内电穿孔.
- 大量RNA测序微切割的大脑组织以分析转录变化.
- 同表达分析以确定基因模块和网络改变.
- 鼠标基因特征与人类SCZ蛋白质基因数据集的比较.
主要成果:
- 稀少的C4过度表达诱导了在主要未转移的细胞中广泛的转录变化.
- 上调的基因参与了胆固醇生物合成,轴突引导,突触可塑性,细胞保护和神经发生.
- 一个含有C4b的模块表明树突发育和细胞循环调节的改变.
- 免疫和炎症基因被降低调节,这表明恒温抑制.
- 在小鼠模型和人类SCZ数据集之间发现了保存的基因签名.
结论:
- 局部C4过度表达可以在神经网络中引发广泛的转录性改变.
- 稀有补体失调可能通过皮质网络传播,导致更广泛的功能障碍.
- 该模型捕捉了与疾病相关的机制,并突出了补充在神经疾病中的作用.
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