1619-星形胶质细胞层粘连蛋白驱动脑转移癌细胞休眠 episode artwork

EPISODE · Sep 26, 2026 · 20 MIN

1619-星形胶质细胞层粘连蛋白驱动脑转移癌细胞休眠

from 聊聊Sci

这项研究通过活体成像和高维度分析,揭示了三阴性乳腺癌向脑部转移的关键机制,指出逃离休眠状态而非进入脑部是疾病进展的瓶颈。研究发现,分布在血管周围的播散性肿瘤细胞(DTCs)通过其表面的营养不良糖蛋白(dystroglycan)受体接收来自星形胶质细胞生成的层粘连蛋白-211的信号。这种信号轴将促生长转录因子YAP锁定在细胞质内,从而维持肿瘤细胞的休眠状态。然而,当血管周围的星形胶质细胞足突脱落导致层粘连蛋白流失时,YAP会转移至细胞核并激活生长程序,最终诱发脑转移。这一发现确立了脑部微环境特有的抑癌机制,并为开发维持肿瘤休眠或预防脑转移的新疗法奠定了理论基础。References:Dai J, Cimino P J, Gouin III K H, et al. Astrocytic laminin-211 drives disseminated breast tumor cell dormancy in brain[J]. Nature Cancer, 2022, 3(1): 25-42.前往小宇宙评论区与主播互动

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1619-星形胶质细胞层粘连蛋白驱动脑转移癌细胞休眠

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