EPISODE · Jan 30, 2026 · 17 MIN
451-脑部炎症诱导的神经元表观遗传重构与突触病变研究
from 聊聊Sci
这项研究探讨了病毒性脑炎引发长期神经功能障碍的生物学机制。研究发现，即使在病毒清除后，神经元也会因干扰素-γ (IFNγ) 信号诱导产生持久的表观遗传转变，导致突触相关基因表达受损。这种被称为突触病 (Synaptopathy) 的现象并非源于神经元死亡，而是由于染色质结构改变引起的神经回路功能障碍。通过小鼠模型和对拉斯穆森脑炎 (RE) 患者样本的分析，研究人员确认了这种免疫驱动的基因重塑具有解剖特异性，且受损程度在海马体中尤为显著。实验证明，阻断神经元中的 IFNγ 信号可预防突触流失并缓解认知缺陷。这些发现为治疗慢性神经炎症疾病中的突触损伤提供了全新的潜在靶点。 References: Shammas G, Piccinno M, Egervari K, et al. Neurons undergo IFNγ-driven persistent epigenetic shifts and synaptopathy in encephalitis[J]. Neuron, 2025. 前往小宇宙评论区与主播互动
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451-脑部炎症诱导的神经元表观遗传重构与突触病变研究
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