639-人髓母细胞瘤 3/4 型的菱唇发育起源

这项由 Smith 等人于 2022 年发表的研究利用多组学分析揭示了儿童恶性脑肿瘤髓母细胞瘤（MB）第 3 组和第 4 组的共同发育起源。研究通过构建人类胎儿小脑的单细胞转录组图谱，发现这些肿瘤的分子特征与菱脑唇（Rhombic Lip）衍生的谷氨酸能谱系高度一致。实验证明，第 3 组肿瘤表现出类似于视网膜光感受器的基因表达，而第 4 组则更趋向于单极刷细胞（UBC）的特征。核磁共振成像（MRI）进一步验证了这些肿瘤大多起源于小脑下部的结节部。此外，研究强调了人类与小鼠在小脑发育上的物种差异，解释了为何以往的小鼠模型难以完全模拟人类病理。这些发现为精准医疗和新型治疗策略的开发提供了关键的解剖学与分子生物学依据。References:* Smith K S, Bihannic L, Gudenas B L, et al. Unified rhombic lip origins of g...去小宇宙查看完整单集简介前往小宇宙评论区与主播互动

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