1198-大脑屏障发育中的瞬时与持久衰老细胞 episode artwork

EPISODE · Jun 28, 2026 · 21 MIN

1198-大脑屏障发育中的瞬时与持久衰老细胞

from 聊聊Sci

这篇文章阐述了衰老细胞在小鼠脑屏障发育与功能维持中的关键作用。研究发现,脉络丛上皮细胞、血管内皮细胞及巨噬细胞在胚胎期均表现出细胞衰老的特征。不同于以往将其视为病理性状态的观点,研究揭示了两种不同的衰老模式:血管内皮细胞和巨噬细胞进入瞬时衰老状态以辅助血管形态建成;而脉络丛上皮细胞则保持持久衰老状态,这种非炎性的分泌表型对于维持血-脑脊液屏障的终身稳定至关重要。实验证明,清除这些特定时空的衰老细胞会导致脑出血、脑室萎陷及流体平衡失调等严重发育缺陷。这项成果重新定义了生理性衰老,表明其作为一种模块化程序,在构建和保护大脑复杂界面中发挥着不可或缺的生物学功能。References:Watson L A, Adelsheim Z, Carter M J, et al. Persistent and transient senescent cells contribute to brain-barrier development[J]. Cell, 2026.前往小宇宙评论区与主播互动

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1198-大脑屏障发育中的瞬时与持久衰老细胞

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