从HSCs分泌的KGF激活了PAK4/BMI1,通过PI3K/AKT通路促进了HCC的干细胞生长
Qinghua Li1, Qiuyang Chen2,3, Wenchao Wang1
1Department of General Surgery, Yangpu Hospital, School of Medicine, Tongji University, China.
IUBMB life
|November 15, 2024
概括
肝细胞癌 (HCC) 干和肝纤维化是由来自肝星细胞 (HSC) 的生长因子促进的. 这种相互作用涉及通过PAK4稳定BMI1,影响PI3K/AKT通路,为HCC提供新的治疗点.
科学领域:
- 肝细胞癌研究 肝细胞癌研究
- 癌症干细胞生物学
- 肝纤维化机制 肝纤维化机制
背景情况:
- 肝细胞癌 (HCC) 的进展受肝星细胞 (HSC) 的相互作用的影响.
- 基于HSC-HCC交叉的分子机制及其对癌症干和肝纤维化的影响需要进一步阐明.
- 了解这些相互作用可能会揭示HCC的新疗法策略.
研究的目的:
- 研究HSCs和HCC之间的相互作用的分子机制.
- 探索这种相互作用在促进HCC干和肝纤维化中的作用.
- 根据HSC-HCC交叉通话,确定HSC的潜在治疗点.
主要方法:
- 使用HCC细胞和LX-2 (HSC) 细胞的共同培养系统 (Transwell,条件介质).
- 检测瘤球状生长,殖民地形成和亡 (流细胞计).
- 共同免疫沉以确认蛋白质相互作用 (BMI1-PAK4);西部涂抹用于蛋白质表达和酸化.
主要成果:
- 高细胞 (LX-2) 和它们分泌的因子 (KGF) 促进高细胞干和增加BMI1表达.
- 通过激活PI3K/AKT通路,BMI1过度表达增强了HCC的干性.
- KGF激活PAK4,它在S315酸化BMI1,增加其稳定性并促进HCC干和肝纤维化.
结论:
- 由HSC衍生的KGF激活PAK4,导致BMI1稳定,并通过PI3K/AKT通路随后促进HCC干和肝纤维化.
- 已识别的KGF-PAK4-BMI1轴代表了HSC-HCC交叉通话中的关键机制.
- 准这种途径可能为肝细胞癌提供一种新的治疗方法.
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