1189-肠道肿瘤发生的MAPK与WNT状态转化及治疗响应 episode artwork

EPISODE · Jun 26, 2026 · 19 MIN

1189-肠道肿瘤发生的MAPK与WNT状态转化及治疗响应

from 聊聊Sci

本研究探讨了结直肠癌(CRC)中MAPK与WNT两条信号通路如何共同驱动肿瘤的发生、发展及耐药性。研究通过构建新型小鼠模型发现,KRAS基因突变(导致MAPK超活化)虽然能诱导肠道进入一种可塑性再生状态,但仅凭此不足以形成肿瘤,甚至会抑制正常的Lgr5+干细胞。相反,肿瘤的启动必须依赖于WNT通路突变所维持的干细胞特性。实验识别出两种截然不同的癌细胞状态:WNT驱动的类干细胞状态负责肿瘤起始,而MAPK驱动的类转运扩增状态则主导肿瘤生长。这种在不同细胞状态间动态切换的能力赋予了肿瘤极高的可塑性,解释了为何针对单一通路的疗效有限,并强调了联合靶向两种通路对于治疗肠癌的必要性。References:Moore A R, Biehs B, Kljavin N, et al. Dynamic transitioning between MAPK-driven and WNT-driven cell states drives intestinal cancer and shapes therapy response[J]. Nature Genetics, 2026: 1-10.前往小宇宙评论区与主播互动

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1189-肠道肿瘤发生的MAPK与WNT状态转化及治疗响应

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