672-脑胶质瘤侵袭性生殖的Plexin-B2引导机制 episode artwork

EPISODE · Mar 21, 2026 · 24 MIN

672-脑胶质瘤侵袭性生殖的Plexin-B2引导机制

from 聊聊Sci

这项研究揭示了胶质母细胞瘤(GBM)如何通过与小胶质细胞及巨噬细胞(TAM)的相互作用,实现从团块生长向浸润性生长的转变。研究发现,小胶质细胞在肿瘤扩散前便已在肿瘤场中被激活,并逐步演变为围绕浸润灶的“神经胶质网”,最终形成引导肿瘤细胞集体迁徙的“肿瘤流”(oncostreams)。通过单细胞测序技术,科学家识别出了对应不同入侵生态位的特定基因特征,并证实了Plexin-B2受体在重构细胞外基质及对齐入侵路径中的核心作用。实验表明,敲除TAM中的Plexin-B2会破坏这种自组织的迁移轨道,迫使肿瘤生长模式从扩散浸润转变为局限性的团块扩张。这些发现不仅阐明了肿瘤微环境对癌症侵袭性的调节机制,也为遏制胶质母细胞瘤扩散提供了潜在的治疗靶点。References: Kang S, Ughetta M E, Zhang J Y, et al. Glioblastoma shift from bulk to infiltrative growth is guided by plexin-B2-mediated microglia alignment in invasive niches[J]. Nature cancer, 2025, 6(9): 1505-1523.前往小宇宙评论区与主播互动

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672-脑胶质瘤侵袭性生殖的Plexin-B2引导机制

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