艾凯特-斯库特家族bHLH转录因子2的激活促进了肝细胞瘤的进展
Yutaka Kato1, Takahiro Fukazawa2,3, Keiji Tanimoto4
1Department of Pediatrics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
Cancer science
|January 6, 2024
概括
甲状腺急性家族bHLH转录因子2 (ASCL2) 在肝细胞母细胞瘤细胞中促进恶性表型. 它的激活调节增殖,茎状和上皮细胞-介质细胞过渡标志物,这表明它在肝细胞母细胞瘤进展中的作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 甲状腺急性家族bHLH转录因子2 (ASCL2) 在肝细胞母细胞瘤 (HB) 组织中显著表达.
- 在HB病原发生过程中,ASCL2的确切功能在很大程度上仍未确定.
研究的目的:
- 研究ASCL2诱导在人类肝细胞母细胞瘤细胞系HepG2.2中的生物学影响.
- 阐明在HB.中ASCL2-介导的细胞变化背后的分子机制.
主要方法:
- 在使用Tet-On 3G系统的HepG2细胞中诱导ASCL2表达.
- 细胞活力,增殖,迁移,入侵和干性被评估使用标准测试 (MTT,殖民地形成,迁移,入侵,球体形成).
- 使用定量逆转录聚合酶连锁反应 (qRT-PCR) 来评估与增殖,EMT,MET和干性相关的基因表达标记物.
主要成果:
- 诱导的ASCL2表达显著提高了HepG2细胞的活力,增殖,迁移,入侵和干性.
- 在ASCL2上调节了与增殖 (CCND1,MYC) 和干性 (POU5F1,SOX9,KLF4) 相关的关键基因.
- 通过增加SNAI1,TWIST1和ZEB1的表达,ASCL2促进了上皮-介质细胞过渡 (EMT),同时降低了CDH1,由改变的基因比率表明.
结论:
- ASCL2的激活促进了肝细胞母细胞瘤细胞中恶性表型的发展.
- ASCL2的前瘤性作用可能通过Wnt信号通路,EMT和与茎相关的基因上调调节进行中介.
- ASCL2可能是肝细胞瘤进展的重要因素.
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