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相关概念视频

The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...

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Isolation, Enrichment, and Maintenance of Medulloblastoma Stem Cells
06:32

Isolation, Enrichment, and Maintenance of Medulloblastoma Stem Cells

Published on: September 1, 2010

剖析基因组复杂性的底层脑髓母细胞瘤.

David T W Jones1, Natalie Jäger, Marcel Kool

  • 1Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, Heidelberg 69120, Germany.

Nature
|July 27, 2012
PubMed
概括

这项研究确定了脑髓母细胞瘤的新遗传驱动因素,特别是在具有挑战性的第三组和第四组儿科脑瘤中. 这些发现为侵略性脑髓母细胞瘤病例提供了潜在的新治疗点.

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科学领域:

  • 基因组学就是基因组学.
  • 儿科瘤学 儿科瘤学
  • 分子生物学分子生物学

背景情况:

  • 骨髓母细胞瘤是最常见的恶性儿科脑瘤,其特点是显著的异质性.
  • 目前的治疗方法面临着复发和长期生活质量方面的挑战,特别是对3组和4组亚型.
  • 脑髓母细胞瘤的确切遗传基础,特别是3组和4组,仍然不完全理解.

研究的目的:

  • 为了进行脑髓母细胞瘤的综合深度测序分析.
  • 为了识别新的遗传变异和子组特异性突变.
  • 发现脑髓母细胞瘤的潜在治疗点,重点关注第三和第四组.

主要方法:

  • 125个脑髓母细胞瘤瘤-正常对的综合深度测序分析.
  • 利用RNA测序来识别基因融合.
  • 在国际癌症基因组联盟 (ICGC) PedBrain瘤项目的背景下分析基因组数据.

主要成果:

  • 已确定四平化为第3组和第4组脑髓母细胞瘤中常见的早期事件.
  • 在已知和新的脑髓母细胞瘤相关基因 (例如DDX3X,CTDNEP1,KDM6A,TBR1) 中发现了复发性突变.
  • 确定了第一个脑髓母细胞瘤融合基因,以及跨子组的染色质修饰物的频繁变化.

结论:

  • 进一步阐明了脑髓母细胞瘤的基因组复杂性和异质性.
  • 确定了新的潜在治疗点,特别是高风险的3组和4组儿科脑瘤.
  • 这些发现有助于更好地了解脑髓母细胞瘤的发病过程,并为针对性治疗铺平了道路.