IL22支持老鼠和人类肝细胞的长期扩张
Bing Li1, Ren Guo2, Shitong Wang3
1School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China.
Journal of hepatology
|February 5, 2026
概括
介质素22 (IL22) 能够使小鼠和人类肝细胞在体外大规模扩张. 这种细胞因子激活了Stat3-Bhlha15/Arntl2通路,将肝细胞分化为可扩展的原始细胞,用于未来的临床应用.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
背景情况:
- 肝细胞对于药物开发,疾病建模和细胞治疗至关重要.
- 在没有功能性损害的情况下在体外扩大肝细胞是一个重大挑战.
- 肝脏在体内再生强调需要类似的体外扩张方法.
研究的目的:
- 在体外鉴定能够使肝细胞长期扩张的因素.
- 研究IL22介导的肝细胞增殖机制.
- 评估IL22在肝脏研究中的临床应用潜力.
主要方法:
- 利用肝切除和移植的小鼠模型来识别再生性细胞因子.
- 在IL22介质中培养和传递小鼠和人类肝细胞.
- 使用遗传谱系追踪,转录组分析和基因删除来阐明机制.
- 通过移植到Fah-/-小鼠中评估扩展的肝细胞功能.
主要成果:
- IL22通过去分化成原始细胞支持小鼠肝细胞 (>30通道) 的长期扩张.
- 涉及转录因子Bhlha15和Arntl2的Stat3通路对IL22诱导的脱差至关重要.
- 扩张的肝细胞保留了分化成成熟细胞的能力.
- IL22还通过脱差分化促进了人类肝细胞的显著扩张 (>30天内10,000倍).
结论:
- IL22可使小鼠和人类肝细胞在体外大规模扩张.
- 在Stat3-Bhlha15/Arntl2轴中介于IL22对肝细胞脱差和扩张的影响.
- 这些发现为IL22在肝脏相关的临床应用中的使用铺平了道路.
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