定量实时成像揭示了PDAC患者衍生器官对ERK和AMPK活动的相位依赖性
Shoko Tsukamoto1, Ye Huaze2, Zhang Weisheng2
1Laboratory of Cell Cycle Regulation, Graduate School of Biostudies, Kyoto University, Kyoto, Japan.
Cancer science
|December 28, 2024
概括
胰腺癌器官的实时成像显示了由ERK和AMPK激酶活性调节的独特生长阶段. 结合MEK和自抑制剂有效向异质癌细胞,为新药开发铺平了道路.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 生物技术是生物技术.
背景情况:
- 患者衍生器官 (PDOs) 模型癌症组织,但时空激酶活性动态仍然不太了解.
- 癌症异质性对有效的治疗策略提出了挑战.
研究的目的:
- 为了全面了解胰腺管腺癌 (PDAC) 器官中的异质生长潜力和药物反应,使用实时成像.
- 为了将单细胞激酶活动动态与有机体生长和药物敏感性相关联.
主要方法:
- 来自10名PDAC患者的有机体的实时成像.
- 无选择性PDAC细胞群的自动化广域图像采集和分析.
- 监测单细胞ERK和AMPK活动.
- 评估MEK抑制剂 (PD0325901) 和自抑制剂 (HCQ) 的疗效.
主要成果:
- PDAC有机体生长是由ERK (早期阶段) 和AMPK (后期阶段) 活动相位依赖地调节的.
- PD0325901和HCQ的目标是不同的有机细胞群.
- 组合疗法在异构的PDAC患者衍生器官系中显示出广泛的疗效.
结论:
- 实时成像在单细胞和患者水平上定量表征PDAC有机体生长和药物敏感性.
- 了解激酶活性动态对于开发针对胰腺癌的新型治疗策略至关重要.
- 结合MEK和自抑制显示出治疗异质PDAC的前景.
相关概念视频
01:07MAPK Signaling Cascades
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
01:25cAMP-dependent Protein Kinase Pathways
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...