Dedifferentiation of neurons and astrocytes by oncogenes can induce gliomas in mice.

Dedifferentiation of neurons and astrocytes by oncogenes can induce gliomas in mice.
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肿瘤基因对神经元和星形胶质细胞的去分化会在小鼠中诱导神经胶质瘤。

DOI:
10.1126/science.1226929
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发表时间:
2012-11-23
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Verma IM
Verma IM
中科院分区:
其他
文献类型:
--
作者:
Friedmann-Morvinski D;Bushong EA;Ke E;Soda Y;Marumoto T;Singer O;Ellisman MH;Verma IM

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多形性胶质母细胞瘤(GBM)是人类最常见和最具侵袭性的恶性原发性脑肿瘤。在这里,我们表明,胶质瘤可以起源于分化的细胞在中枢神经系统(CNS),包括皮质神经元。通过致癌慢病毒载体转导小鼠脑中的神经干细胞(NSC)、星形胶质细胞或甚至成熟神经元可引起恶性胶质瘤。所有肿瘤,无论注射部位(起始群体)如何,都具有干细胞或祖细胞标志物高表达和分化标志物低表达的共同特征。微阵列分析显示,星形细胞和神经元来源的肿瘤匹配间质GBM亚型。我们认为,大多数分化的细胞在中枢神经系统后定义的遗传变异进行去分化,产生一个神经干细胞或祖细胞状态,启动和维持肿瘤的进展,以及引起的异质性群体中观察到的恶性胶质瘤。
Glioblastoma multiforme (GBM) is the most common and aggressive malignant primary brain tumor in humans. Here, we show that gliomas can originate from differentiated cells in the central nervous system (CNS), including cortical neurons. Transduction by oncogenic lentiviral vectors of neural stem cells (NSCs), astrocytes, or even mature neurons in the brain of mice can give rise to malignant gliomas. All the tumors, irrespective of the site of injection (initiating population), share common features of high expression of stem or progenitor markers and low expression of differentiation markers. Microarray analysis revealed that tumors of astrocytic and neuronal origin match the mesenchymal GBM subtype. We propose that most differentiated cells in the CNS upon defined genetic alterations undergo dedifferentiation to generate a NSC or progenitor state to initiate and maintain the tumor progression, as well as to give rise to the heterogeneous populations observed in malignant gliomas.
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