Nrf2信号传递在肝细胞样细胞发育中的作用
Chie Takasu1, Shuhai Chen1, Luping Gao1
1Department of Surgery, Institute of Health Biosciences, Tokushima University, Tokushima, Japan.
The journal of medical investigation : JMI
|November 8, 2023
概括
核因子红色素-2相关因子2 (Nrf2) 激活增强肝细胞样细胞 (HLC) 功能在与人类脂肪衍生的介质干细胞 (hADSCs) 的分化过程中. Nrf2转位对于HLC成熟和功能至关重要.
科学领域:
- 干细胞生物学 干细胞生物学
- 肝细胞分化 肝细胞分化
- 分子机制的分子机制
背景情况:
- 人类脂肪衍生介质干细胞 (hADSCs) 是产生肝细胞的潜在来源.
- 了解分化机制对于改善肝细胞功能至关重要.
- 之前的工作建立了一个三步方案,使用糖原合成激酶 (GSK) 3抑制剂来增强肝细胞功能.
研究的目的:
- 在hADSC分化成肝细胞样细胞 (HLCs) 过程中研究核因子红色素-2相关因子2 (Nrf2) 的作用和激活.
- 评估Nrf2对HLC成熟和功能的影响.
主要方法:
- 对hADSCs应用了21天的三步差异化协议.
- 在分化过程中监测了Nrf2的核转位.
- 测量CYP3A4活性作为肝细胞功能的标志物.
- 通过使用Nrf2-siRNA来抑制其活性来评估Nrf2的功能.
主要成果:
- 从第11天开始,在HLC分化过程中观察到Nrf2的显著核转位.
- 与Activin A治疗相比,GSK3抑制剂治疗导致了较高的Nrf2核转位和CYP3A4活性.
- 使用siRNA抑制Nrf2延迟了HLC成熟,降低了CYP3A4的活性.
结论:
- Nrf2激活和核转移在增强由hADSCs衍生的HLCs功能方面发挥着至关重要的作用.
- Nrf2可以作为一种治疗点,用于开发更具功能性的HLC.
- 这些发现有助于阐明肝细胞与干细胞分化的机制.
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