ASPSCR1-TFE3通过在六度VCP/p97周围组织增强器循环来重新编程转录
bioRxiv : the preprint server for biology
|October 24, 2023
概括
对于ASPSCR1-TFE3蛋白来说,VCP/p97蛋白是必不可少的,它可以驱动罕见的癌症,如膜软部肉瘤 (ASPS) 和Xp11重组细胞癌 (RCC). 抑制VCP/p97为这些具有挑战性的疾病提供了一个有希望的新治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 膜软部肉瘤 (ASPS) 和Xp11重新排列的细胞癌 (RCC) 是由ASPSCR1-TFE3融合蛋白驱动的罕见癌症.
- 鉴定这些癌症的治疗点一直是具有挑战性的,因为独特的遗传驱动因素.
研究的目的:
- 调查ASPSCR1-TFE3瘤发生背后的分子机制.
- 通过了解ASPSCR1-TFE3.3.的蛋白相互作用来确定潜在的治疗点.
主要方法:
- 蛋白质组分析以确定与ASPSCR1-TFE3.3.相互作用的蛋白质.
- 染色体免疫沉 (ChIP) 和HiChIP用于研究蛋白质-DNA相互作用和染色体结构.
- 在体外和体外 (老鼠模型) 实验中评估癌细胞增殖和瘤发生.
主要成果:
- 一种AAA+ ATPase的VCP/p97被确定为一个关键的辅助因子,在核复合物中与ASPSCR1-TFE3.3进行丰富.
- 在全基因组的染色体增强剂上与ASPSCR1-TFE3共定位VCP/p97.
- VCP/p97的存在,组合和酶活性对于ASPSCR1-TFE3的瘤转录特征和高阶染色体结构至关重要.
- 在ASPS和RCC模型中,ASPSCR1-TFE3和VCP/p97显示了癌细胞增殖和瘤发生的相互依赖.
结论:
- VCP/p97是ASPSCR1-TFE3基蛋白的一个强制性辅因子.
- 在协调ASPSCR1-TFE3.3的致癌功能方面,VCP/p97起着至关重要的作用.
- VCP/p97代表了ASPS和Xp11重新排列的RCC的一个潜在的新疗法标.
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