基于iPSC的体外模型总结了人类胸膜上皮的发育和多个系谱的规范
Yann Pretemer1, Yuxian Gao1,2, Kaho Kanai1,3
1Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan.
Nature communications
|August 25, 2025
概括
研究人员开发了一种人类诱导的多能干细胞 (iPSC) 模型用于胸腺器官生成. 这种模型在体外产生多样化的胸膜上皮细胞 (TEC),有助于T细胞发育研究和潜在的胸膜疾病治疗.
科学领域:
- 免疫学
- 发育生物学
- 干细胞生物学
背景情况:
- 胸膜上皮细胞 (TEC) 对T细胞发育至关重要,但由于异质性和分离困难,对人类进行研究具有挑战性.
- 了解来自共同祖先的多种TEC血统的分化途径至关重要,但仍然不太清楚.
研究的目的:
- 建立基于人体诱导多能干细胞 (iPSC) 的实验室胸腺器官生成模型.
- 研究各种TEC血统的分化轨迹及其在T细胞发育中的作用.
主要方法:
- 人类iPSC的受控视网膜信号传递和自我导向的分化,以产生类似TEC的原始和成熟的TEC群体.
- 诱导的TEC与胸细胞共同培养,以评估它们在T细胞生成和成熟中的功能.
- 包括MHCII+,AIRE+和模仿性TEC在内的TEC亚群的特征.
主要成果:
- 在体外成功衍生出类似FOXN1+TEC原生细胞和类似皮质和髓子类型的成熟MHCII+TEC.
- 诱导的TEC支持具有多种T细胞受体 (TCR) 库的天真T细胞的产生.
- 已证明在体外分化为AIRE+和模仿TEC亚群.
结论:
- 开发的iPSC模型使人体TEC从规范到成熟的差异化能够进行全面的体外研究.
- 提供了关于人类胸腺发育的新见解,并为治疗先天性胸腺疾病的再生医学提供了潜力.
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