Glioblastoma Model Using Human Cerebral Organoids.

Glioblastoma Model Using Human Cerebral Organoids.
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DOI:
10.1016/j.celrep.2018.03.105
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发表时间:
2018-04-24
期刊:
影响因子:
8.8
通讯作者:
Verma IM
Verma IM
中科院分区:
生物学1区
文献类型:
--
作者:
Ogawa J;Pao GM;Shokhirev MN;Verma IM

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我们开发了人类大脑类器官中神经胶质瘤的癌症模型,可以直接观察肿瘤的发生以及连续的显微镜观察。我们使用 CRISPR/Cas9 技术通过同源重组将 HRasG12V-IRES-tdTomato 构建体靶向 TP53 基因座。结果表明,转化细胞迅速具有侵袭性并破坏周围的类器官结构,压倒整个类器官。类器官中的肿瘤细胞可以原位异种移植到免疫缺陷的 NOD/SCID IL2RG−/− 动物中,表现出侵袭性表型。类器官生成的假定肿瘤细胞显示出与间充质亚型人胶质母细胞瘤一致的基因表达谱。我们进一步证明,人类类器官来源的肿瘤细胞系或原代人类患者来源的胶质母细胞瘤细胞系可以移植到人类大脑类器官中,以建立侵袭性肿瘤样结构。我们的结果显示了使用类器官作为测试人类癌症表型的平台的潜力,这些表型概括了恶性肿瘤的关键方面。小川等人。表明人类大脑类器官可以作为肿瘤形成的平台。对癌基因/肿瘤抑制基因进行 CRISPR/Cas9 操作可启动脑类器官中的肿瘤发生,从而可以在显微镜下观察肿瘤的发展。此外,人脑类器官可用作肿瘤细胞移植的平台。
We have developed a cancer model of gliomas in human cerebral organoids that allows direct observation of tumor initiation as well as continuous microscopic observations. We used CRISPR/Cas9 technology to target an HRasG12V-IRES-tdTomato construct by homologous recombination into the TP53 locus. Results show that transformed cells rapidly become invasive and destroy surrounding organoid structures, overwhelming the entire organoid. Tumor cells in the organoids can be orthotopically xenografted into immunodeficient NOD/SCID IL2RG−/− animals, exhibiting an invasive phenotype. Organoid-generated putative tumor cells show gene expression profiles consistent with mesenchymal subtype human glioblastoma. We further demonstrate that human-organoid-derived tumor cell lines or primary human-patient-derived glioblastoma cell lines can be transplanted into human cerebral organoids to establish invasive tumor-like structures. Our results show potential for the use of organoids as a platform to test human cancer phenotypes that recapitulate key aspects of malignancy. Ogawa et al. show that human cerebral organoids can be used as a platform for tumor formation. CRISPR/Cas9 manipulation of oncogenes/tumor suppressors initiates tumorigenesis in cerebral organoids, allowing microscopic observation of tumor development. Additionally, human cerebral organoids can be used as a platform for tumor cell transplantation.
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