使用原始细胞重建人类PDAC,揭示了瘤发作瘤发作时的瘤转录特征
Yi Xu1, Michael H Nipper1, Angel A Dominguez1
1Department of Cell Systems & Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA.
Nature communications
|January 27, 2024
概括
人类胰腺细胞可以形成胰腺管腺癌 (PDAC),当与关键突变工程时. 这项研究证明,PDAC可以来自状细胞和管状细胞,识别潜在的早期诊断生物标志物.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
背景情况:
- 动物模型表明胰腺细胞可以转化为胰腺管道腺癌 (PDAC).
- 人类胰腺小细胞可能经历瘤发生的可能性尚不清楚.
- 现有的研究缺乏直接的实验证据,证明PDAC的起源来自人类细胞.
研究的目的:
- 为了研究被分类的人类胰腺状细胞的瘤生成潜力.
- 为了确定人类状细胞是否可以在基因修饰后在体内形成PDAC.
- 为了确定PDAC的潜在早期诊断生物标志物.
主要方法:
- 分类的人类胰腺小细胞被培养成3D有机体.
- 器官被基因改造,具有常见的PDAC驱动突变.
- 进行了RNA测序和DNA甲基化分析.
- 在基因操纵后,PDAC形成在体内被评估.
主要成果:
- 经过基因改造的人类体器官表现出显著的转录变化,同时保留了DNA甲基化模式.
- 获得的PDAC驱动突变使得类器官能够在体内形成PDAC.
- 具有相同突变的排序管状细胞也形成了PDAC,证实了双细胞起源.
- 转录分析揭示了转向增殖,代谢重新连接和改变免疫/凝固通路的转变.
结论:
- 像管状细胞一样,人类胰腺状细胞可以作为PDAC的来源细胞.
- 获得特定的驱动突变对于细胞转化至关重要.
- 早期转换基因表达的变化为新的PDAC诊断生物标志物提供了潜在的潜力.
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