在染色体阅读器中通过功能获取突变损害细胞命运
Liling Wan1,2, Shasha Chong3,4, Fan Xuan5
1Laboratory of Chromatin Biology and Epigenetics, The Rockefeller University, New York, NY, USA. Liling.Wan@Pennmedicine.upenn.edu.
Nature
|December 20, 2019
概括
在ENL蛋白中的突变
科学领域:
- 表观遗传学
- 癌症生物学
- 发育生物学
背景情况:
- 基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因
- 读者蛋白解释基因组的变化,但它们在疾病发病中的作用尚不清楚.
- 在急性白血病和威尔姆斯瘤中涉及的ENL蛋白质是基因组乙化读者.
研究的目的:
- 调查ENL YEATS域中的突变如何导致威尔姆斯瘤的发展.
- 阐明ENL突变影响染色体招募和基因表达的分子机制.
- 了解ENL自我关联在瘤发生中的作用.
主要方法:
- 使用人类和老鼠细胞系.
- 进行了染色体免疫沉和基因表达分析.
- 使用小鼠细胞检测评估了生.
- 研究了蛋白质自我结合和核点的形成.
主要成果:
- 在染色体招募和转录控制方面,ENL突变赋予了功能.
- 突变性ENL驱动基因表达变化有利于癌前细胞的命运.
- ENL突变体表现出增加的自我关联,形成增强染色体占用和基因激活的核点.
- 在生测定中,突变ENL产生了类似于威尔姆斯瘤的不分化结构.
结论:
- 在ENL YEATS领域的热点突变会在发育过程中破坏正常的细胞命运调节.
- 由突变驱动的ENL自我关联导致自我强化的染色质招募和威尔姆斯瘤的致癌结果.
- 了解这些机制为儿童癌的发病提供了洞察力.
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