与EMT相关的STC2+恶性细胞状态,瘤微环境重塑,以及结肠直肠癌中单细胞和空间转录学揭示的较差预后
Kai Gui1, Tianyi Yang1, Chengying Xiong1
1School of Laboratory Medicine, Chongqing Medical University, Key Laboratory of Clinical Laboratory Diagnostics, Ministry of Education, Chongqing, 400016, China.
Oncology research
|January 8, 2026
概括
研究人员确定了一种特定的结肠直肠癌 (CRC) 细胞子集,由STC2表达标记,通过瘤微环境 (TME) 内的独特代谢和信号通路驱动不良预后. 这一发现突出了CRC的潜在治疗目标.
科学领域:
- 在瘤学瘤学.
- 癌症新陈代谢 癌症新陈代谢
- 瘤微环境 (TME) 是指瘤的微环境.
背景情况:
- 结肠直肠癌 (CRC) 异质性涉及其他代谢途径,受低氧和果糖的影响,影响瘤微环境 (TME).
- 了解这些代谢适应和细胞间通信对于确定CRC的预后生物标志物和治疗点至关重要.
研究的目的:
- 通过使用替代代代谢途径,识别CRC中的特定恶性亚群.
- 描述TME内的细胞间信号网络和这些子群体的空间组织.
- 开发基于低氧和果糖代谢相关基因 (HFGs) 的预后模型.
主要方法:
- 综合性多omics方法结合了大量数据集,单细胞RNA测序和空间转录组学.
- 开发一种使用HFGs来划分瘤细胞亚群的预后模型.
- 分析细胞间信号网络和已识别的亚种群的空间组织.
主要成果:
- 鉴定了与CRC预后不佳相关的阳性斯坦尼奥卡尔-2 (STC2+) 恶性细胞子集.
- STC2+细胞表现出增加的上皮细胞-介质细胞过渡活动,并作为TME的关键信号枢纽.
- 确定了两种不同的涉及STC2+细胞的空间体受体相互作用:GDF15-TGFBR2和MIF-CD74/CXCR4通路,分别准内皮细胞和巨细胞.
结论:
- 在CRC中确定了一种代谢定义和空间限制的恶性细胞状态,其特征是STC2表达升高.
- 这种STC2+亚种群参与了显著的免疫-神经管相互作用,有助于TME重塑.
- STC2+ 恶性细胞代表了一个功能显著的亚群,也是结直肠癌的潜在治疗点,包括肝转移.
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