梅宁-MLL1复合物与NF-Y合作,促进肝细胞癌存活率
Margarita Dzama-Karels1, Mallory Sokolowski1, Peyton Kuhlers1
1Department of Genetics, the University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Cell reports
|November 26, 2025
概括
门因-MLL1复合体对于肝癌 (HCC) 细胞存活至关重要. 抑制这个复合体,以及NF-Y,有效地降低了癌细胞的活力.
科学领域:
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- 染色质调节者的异常表达在肝细胞癌 (HCC) 中很常见,这表明染色质调节失调在肝癌中的作用.
- 门因-MLL1复合体已经成为HCC病变发生的潜在关键参与者.
研究的目的:
- 研究染色体调节者的作用,特别是menin-MLL1复合体,在肝细胞癌 (HCC) 生存率中的作用.
- 阐明明meni-MLL1调节HCC.中瘤基因转录的机制.
主要方法:
- 在HCC的2D和3D细胞培养模型中进行了以表观基因组为中心的CRISPR屏幕.
- 使用了一种脑膜抑制剂 (SNDX-5613) 并对染色体调节剂进行CRISPR-Cas9查.
- 评估了H3 lysine 4三甲基化 (H3K4me3),染色质可访问性和基因表达的变化.
主要成果:
- 鉴定了menin-MLL1复合体的子单元,这些子单元对HCC细胞存活至关重要.
- 抑制梅因-MLL1相互作用导致全球染色体变化,减少H3K4me3,可访问性和基因表达.
- 发现 menin-MLL1 与NF-Y转录因子复合体合作,调节瘤基因表达,联合抑制导致细胞死亡增加.
结论:
- 门因-MLL1复合体对HCC细胞存活至关重要.
- 门因-MLL1在与NF-Y合作调节瘤转录方面发挥着关键作用.
- 针对menin-MLL1复合体是HCC的潜在治疗策略.
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