NOX1和NPY1R标记了作为体内癌症起源的局部结肠干细胞群。
NOX1 and NPY1R mark regional colon stem cell populations that serve as cancer origins in vivo.
作者信息
Gasnier Maxime, Chen Tanysha Chi-Ying, Yada Swathi, Sagiraju Sowmya, Yoshikawa Yusuke, Perna Stefano, Lim Hui Yi Grace, Lee Bernett, Barker Nick
机构信息
A*STAR Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore, Singapore.
Department of Surgery, Nerima General Hospital, Tokyo, Japan.
出版信息
Nat Cell Biol. 2025 Sep 2. doi: 10.1038/s41556-025-01763-1.
Current colorectal cancer mouse models either lack colon specificity, limiting progression towards more advanced disease, or preclude evaluation of resident stem cells as cancer origins. Here we report the identification of NOX1 and NPY1R as cell-surface markers enriched in LGR5 stem cells predominantly within the caecum and exclusively within the middle and distal colorectum, respectively. Selective dysregulation of Wnt signalling in NOX1 or NPY1R stem cells using CreERT2 mouse lines drives colon cancer initiation, predominantly within the caecum and rectum respectively, establishing these stem cell populations as important sources of colon cancer. Selective conditional activation of Wnt signalling and oncogenic Kras in combination with loss of TRP53 in these stem cell compartments resulted in the development of advanced, invasive cancers. This study establishes CreERT2 drivers as valuable tools for studying stem cell contributions to colon cancer.
当前的结直肠癌小鼠模型要么缺乏结肠特异性,限制了向更晚期疾病的进展,要么无法评估作为癌症起源的驻留干细胞。在此,我们报告了NOX1和NPY1R作为细胞表面标志物的鉴定,它们分别主要在盲肠的LGR5干细胞中富集,以及专门在结肠中、远端的LGR5干细胞中富集。使用CreERT2小鼠品系对NOX1或NPY1R干细胞中的Wnt信号进行选择性失调,分别主要在盲肠和直肠中驱动结肠癌的起始,将这些干细胞群体确立为结肠癌的重要来源。在这些干细胞区室中,Wnt信号和致癌性Kras的选择性条件激活与TRP53的缺失相结合,导致了晚期侵袭性癌症的发展。这项研究将CreERT2驱动因子确立为研究干细胞对结肠癌贡献的有价值工具。