由HEATR1-MYC相互作用控制的 рибо发生增强剂促进过渡到脑瘤生长
Laura R Diaz1, Jon Gil-Ranedo1, Karolina J Jaworek1,2
1Peninsula Medical School, Faculty of Health, John Bull Building, University of Plymouth, PL6 8BU, Plymouth, UK.
EMBO reports
|January 15, 2024
概括
大脑瘤发起细胞 (TICs) 在瘤生长之前促进核糖生成,由HEATR1.1驱动. 质瘤中高HEATR1表达与生存率差相关,突出其在癌症进展中的作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 发育生物学 发展生物学
背景情况:
- 瘤发生涉及细胞命运决定和不受控制的生长,但指导瘤发起细胞 (TIC) 命运的早期事件尚不清楚.
- 核糖体生殖,核糖体生殖的过程,是已知的适应已建立的瘤.
研究的目的:
- 调查早期事件和驱动大脑TIC命运和瘤启动的分子机制.
- 探索核子发生在前瘤性脑TICs中的作用.
主要方法:
- 在基于Drosophila神经干细胞的模型中,单细胞转录组对大脑TIC的分析.
- 对HEAT-Repeat Containing 1 (HEATR1) 在ICT中的表达和功能进行分析.
- 与质瘤患者生存数据和患者衍生质母细胞干细胞的相关性分析.
- 研究HEATR1与MYC.的相互作用.
主要成果:
- 大脑TIC在瘤生长之前,在代谢过程中表现出显著的变化,包括增强的核糖生成.
- 调节后的HEATR1促进了核糖体RNA生成,TIC扩大,以及小孩缺乏TIC的过度生长.
- 高HEATR1表达与质瘤患者的生存率差相关.
- 来自患者的质母细胞干细胞依赖HEATR1来增强核糖生成和瘤潜力.
- HEATR1 结合MYC,促进其核定位,并且对于MYC驱动的核生成是必需的.
结论:
- 大脑TICs在瘤生长之前通过HEATR1升调核生成,代表了早期癌症发展机制.
- HEATR1是早期大脑TIC发育的关键驱动因素,也是质瘤预后的潜在生物标志物.
- HEATR1-MYC相互作用为早期大脑TIC发育期间的核糖生成重编程提供了机械的洞察力.
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