在试验中,CMS亚型与新辅助剂Galunisertib加化学辐射在直肠癌中的完整反应相关
Venkatesh Rajamanickam1, Noah D Simons1, Wesley Rosales1
1Earle A. Chiles Research Institute, Providence Cancer Institute, Portland, OR 97213, USA.
Translational oncology
|February 7, 2026
概括
将Galunisertib添加到新辅助化学辐射治疗中,可能会改善直肠癌的反应. 基因表达分析揭示了完全响应者的独特模式,表明了潜在的治疗点和患者分层策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 改善局部晚期直肠癌 (LARC) 的新辅助疗法对于器官的保存和存活至关重要.
- 识别受益于治疗升级或降级的患者是一个正在进行的研究领域.
研究的目的:
- 在LARC患者中分析Galunisertib加化学辐射的新辅助研究中的RNA测序数据.
- 为了确定完全响应者 (CR) 和不完全响应者 (非CR) 之间的分子差异.
主要方法:
- 基线和galunisertib后活检的RNA测序.
- 分析与MYC,炎症和表皮细胞转化为介质细胞转化 (EMT) 相关的基因表达.
- 评估放射敏感性和TGFβ反应得分,以及共识分子亚型 (CMS).
主要成果:
- 在CR患者中,Galunisertib上调了MYC通路的表达.
- 放射性敏感性和TGFβ评分的预测价值有限.
- 共识分子亚型4 (CMS4) 和3 (CMS3) 与反应相关.
- 在基于RNA的细胞组成相关性中观察到的差异.
结论:
- 加卢尼塞尔蒂布与化学辐射相结合,在LARC中显示出有前途的结果.
- MYC路径调制和特定的CMS亚型与治疗反应有关.
- 假设:Galunisertib可以克服直肠癌中的TGFβ驱动的 stromal电阻.
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