NOTCH1驱动瘤可塑性和转移在肝细胞癌的转移
bioRxiv : the preprint server for biology
|November 1, 2024
概括
NOTCH1激活驱动肝癌的可塑性和肺转移,可以通过抑制VEGF和TGFß通路来向这些转移. 这项研究提出了一个新的小鼠模型,用于研究NOTCH1驱动的肝细胞癌 (HCC).
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 肝细胞癌 (HCC) 是癌症死亡的主要原因.
- 诺奇路径,特别是NOTCH1,与HCC的发展和进展有关.
- 需要一种新的小鼠模型来研究NOTCH1在HCC中的作用.
研究的目的:
- 开发和描述NOTCH1驱动性肝癌的新型小鼠模型.
- 研究NOTCH1在HCC可塑性和转移中的作用.
- 为了确定NOTCH1-介导的肝癌的治疗点.
主要方法:
- 产生了MYC过度表达的小鼠模型,并在肝细胞中激活了Notch1细胞内域 (NICD1).
- 利用水力动力尾脉注射来诱导瘤.
- 进行了基因病理学和转录基因分析 (批量和单细胞RNA-seq),以及使用单克隆抗体的功能实验.
主要成果:
- 在MYC;NICD1模型中,HCC-CCA表现出结合的HCC-CCA表型,具有时间性可塑性,从胆管细胞转变为肝细胞.
- 肝细胞组件显示中细胞基因丰富,并导致肺转移.
- 转移细胞在TGFB和VEGF通路中得到丰富;抑制减少了转移.
结论:
- 在HCC中,NOTCH1激活驱动时间可塑性和肺转移.
- 血管新生和TGFß通路是NOTCH1诱导转移的关键媒介.
- 准VEGF和TGFß通路为NOTCH1驱动的HCC提供了一个潜在的治疗策略.
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