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首页> 外文期刊>Cell stem cell >Human Pancreatic Tumor Organoids Reveal Loss of Stem Cell Niche Factor Dependence during Disease Progression
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Human Pancreatic Tumor Organoids Reveal Loss of Stem Cell Niche Factor Dependence during Disease Progression

机译:人类胰腺肿瘤有机体揭示疾病进展期间干细胞的损失依赖性

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摘要

Despite recent efforts to dissect the inter-tumor heterogeneity of pancreatic ductal adenocarcinoma (PDAC) by determining prognosis-predictive gene expression signatures for specific subtypes, their functional differences remain elusive. Here, we established a pancreatic tumor organoid library encompassing 39 patient-derived PDACs and identified 3 functional subtypes based on their stem cell niche factor dependencies on Wnt and R-spondin. A Wnt-non-producing subtype required Wnt from cancer-associated fibroblasts, whereas a Wnt-producing subtype autonomously secreted Wnt ligands and an R-spondin-independent subtype grew in the absence of Wnt and R-spondin. Transcriptome analysis of PDAC organoids revealed gene-expression signatures that associated Wnt niche subtypes with GATA6-dependent gene expression subtypes, which were functionally supported by genetic perturbation of GATA6. Furthermore, CRISPR-Cas9-based genome editing of PDAC driver genes (KRAS, CDKN2A, SMAD4, and TP53) demonstrated non-genetic acquisition of Wnt niche independence during pancreas tumorigenesis. Collectively, our results reveal functional heterogeneity of Wnt niche independency in PDAC that is non-genetically formed through tumor progression.
机译:尽管近期通过确定特定亚型的预后预测基因表达特征来对胰腺导管腺癌(PDAC)的肿瘤间异质性进行描述,但它们的功能差异仍然难以捉摸。在这里,我们建立了一种胰腺肿瘤有机体文献,包括39例患者衍生的PDACs,并基于它们的干细胞Niche因子依赖性依赖于WnT和R-掺杂的3个功能亚型。从癌症相关的成纤维细胞中需要WNT-非生产的亚型,而产生WNT-亚型自主分泌的WNT配体和R-掺六型亚型的亚型在不存在WNT和R-掺杂。 PDAC有机体的转录组分析揭示了与GATA6依赖性基因表达亚型相关的基因表达鉴定,其与GATA6的遗传扰动功能支持。此外,PDAC驾驶基因(KRAS,CDKN2A,SMAD4和TP53)的CRISPR-CAS9基因组编辑在胰腺肿瘤内疾病期间展示了非遗传措施WNT Niche独立性。统称,我们的结果揭示了通过肿瘤进展非遗传形成的PDAC中Wnt Niche独立性的功能异质性。

著录项

  • 来源
    《Cell stem cell》 |2018年第3期|共20页
  • 作者单位

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Osaka Univ Inst Prot Res Lab Prot Synth &

    Express Suita Osaka 5650871 Japan;

    Tokyo Med Univ Dept Gastroenterol Tokyo 1600023 Japan;

    Keio Univ Sch Med Dept Surg Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Surg Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

    Keio Univ Sch Med Dept Gastroenterol Tokyo 1608582 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

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