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脑膜抑制会损害尤文肉瘤的转移性殖民

Katherine A Braun, Nicolas M Garcia, Mohamed Ahmed

bioRxiv : the preprint server for biology

|November 26, 2025

概括

梅宁蛋白通过调节MYC和发育基因驱动尤文肉瘤转移. 门抑制剂显示出治疗潜力,在临床前模型中显著减少瘤的扩散.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
癌症治疗方法癌症治疗方法

背景情况:

梅宁是一种基因表达调节的支架蛋白,在MLL重组型白血病中至关重要.
梅宁此前曾涉及到在尤文肉瘤 (EwS) 中促进瘤原体表型.

研究的目的:

为了定义Ewing瘤特异性功能的Menin.
评估Menin抑制剂作为Ewing肉瘤的潜在治疗方法.

主要方法:

在EWS细胞中Menin的遗传淘汰.
缺乏梅宁的细胞和瘤的转录概况 (RNA-seq).
在接受Menin抑制剂VTP50469 (revumenib) 治疗的小鼠中的体内转移试验.
共同免疫沉以研究男性:MYC相互作用.

主要成果:

梅宁淘汰赛在体内破坏了转移潜力,但在体内并没有破坏EWS细胞的增殖.
阴茎枯竭改变了基因表达,降低了MYC目标的调节,并提高了发育计划的调节.
门因抑制剂VTP50469降低了MYC目标基因表达和门因:MYC相互作用.
在体内,VTP50469治疗显著抑制了EWS细胞的转移性定居.

结论:

梅宁作为尤文肉瘤转移的关键调解者.
门宁抑制剂,如VTP50469,代表了对高风险的尤文肉瘤有前途的治疗策略.

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