适应性可塑性瘤细胞调节结肠直肠癌中MAPK向治疗反应
bioRxiv : the preprint server for biology
|February 3, 2025
概括
在结直肠癌中,MAPK通路抑制剂 (MAPKi) 的耐用性有限. 新的研究确定了由ASCL2驱动的适应性可塑性瘤 (APT) 细胞,这些细胞抵抗MAPKi,这表明向可塑性可以改善治疗结果.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 分子治疗学分子治疗学
背景情况:
- MAPK通路抑制剂 (MAPKi) 对于晚期结直肠癌 (CRC) 是至关重要的,但通常会产生短暂的反应.
- 除了获得的突变之外,限制CRC中MAPKi响应耐久性的机制在很大程度上是未知的.
研究的目的:
- 为了研究新的瘤生物学,为MAPKi治疗的结直肠癌中有限的响应耐久性做出贡献.
- 探索瘤可塑性对MAPKi治疗反应的影响.
主要方法:
- 对MAPKi治疗患者数据和患者衍生CRC模型的分析.
- 评估干细胞计划,ASCL2表达和适应性可塑性瘤 (APT) 细胞群.
- 在小鼠中对APT细胞枯竭策略的临床前评估.
主要成果:
- MAPKi治疗与激活的干性程序和增加的ASCL2表达相关,与糟糕的结果有关.
- ASCL2 识别出一个独特的,MAPKi 抗性细胞群 (APT 细胞),由瘤可塑性引起.
- 抑制MAPK通路促进APT细胞丰富,限制在临床前和临床环境中的治疗疗效.
结论:
- 适应性可塑性瘤 (APT) 细胞,以ASCL2表达为特征,是结直肠癌中MAPKi抵抗的关键机制.
- 向瘤可塑性和耗尽APT细胞可以提高MAPKi的疗效,并延长反应的耐久性.
- 解决瘤可塑性对于改善MAPKi治疗结直肠癌患者的临床结果至关重要.
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