葡萄糖-6-酸盐脱酶缺乏会加快胰腺酸到导管的转化
Megan D Radyk1, Barbara S Nelson2, Christopher J Halbrook3,4
1Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA.
bioRxiv : the preprint server for biology
|November 21, 2023
概括
激活KRAS突变可以在胰腺癌早期重编程新陈代谢. 增加的葡萄糖-6-酸盐脱酶 (G6PD) 通过管理活性氧物种 (ROS) 加快了这一过程.
科学领域:
- 在瘤学瘤学.
- 细胞的新陈代谢
- 癌症生物学 癌症生物学
背景情况:
- 激活KRAS突变通过改变细胞代谢来驱动胰腺瘤的生长.
- 代谢重编程对于早期瘤产生至关重要,并提供了选择性优势.
- 状细胞可以通过状到导管性转化 (ADM) 转化为胰腺瘤,这是一个由瘤性KRAS影响的过程.
研究的目的:
- 为了研究KRAS驱动的acinar-to-ductal metaplasia (ADM) 期间的代谢重编程.
- 确定葡萄糖-6-酸脱酶 (G6PD) 在早期胰腺瘤发生中的作用.
主要方法:
- 对经过ADM的小鼠状细胞进行转录组分析.
- 利用KRAS驱动的胰腺瘤发生和G6PD缺陷的小鼠模型.
主要成果:
- ADM表现出全球增强的新陈代谢程序,表明向一个不那么差异化,扩散的表型的转变.
- 包括G6PD在内的NRF2标基因在ADM期间被差异性表达.
- 缺乏G6PD加速ADM和胰腺内皮质瘤以一种取决于其NADPH生成功能的方式用于ROS管理.
结论:
- 代谢重编程对于KRAS驱动的状到导管性转化 (ADM) 是必不可少的.
- 增加G6PD活动通过支持ROS管理,加速早期胰腺癌的发病.
- 针对G6PD等代谢途径,可能为胰腺癌的预防提供治疗策略.
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