604-硬脑膜窦动态结构及其免疫防御功能 episode artwork

EPISODE · Mar 7, 2026 · 19 MIN

604-硬脑膜窦动态结构及其免疫防御功能

from 聊聊Sci

这些研究揭示了大脑硬脑膜窦并非此前认为的被动血液排出通道,而是具有高度动态性的神经免疫界面。研究人员发现,这些静脉窦受平滑肌控制,能够通过特定受体产生类似动脉的舒缩活动,以此调节颅内压和液体流动。其内部衬附着一种特殊的窦内皮细胞,这些细胞不仅高度通透,还呈现出动态开启和关闭边界的“皱褶”现象。这种独特的内皮动态由 RAMP2 信号通路驱动,通过允许免疫细胞在血液与脑膜空间之间自由穿梭,实现持续的免疫监视。当遭遇病毒感染时,这种动态监测机制会显著增强,从而在保护中枢神经系统免受外源病原体侵袭中发挥关键的抗病毒防御作用。References: Monaghan K L, Zanluqui N G, Su Y, et al. Highly dynamic dural sinuses support meningeal immunity[J]. Nature, 2026: 1-10.前往小宇宙评论区与主播互动

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604-硬脑膜窦动态结构及其免疫防御功能

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