细胞命运的鉴定 确定转录因子 产生大脑内皮细胞的转录因子
Roya Ramezankhani1,2, Jonathan De Smedt3, Burak Toprakhisar3,4
1Stem Cell Institute, Department of Development and Regeneration, KU Leuven, O&N IV Herestraat 49, Leuven, 3000, Belgium. roya.ramezankhani@kuleuven.be.
Stem cell reviews and reports
|January 24, 2025
概括
研究人员确定了关键的转录因子,以引导人类多能干细胞衍生的内皮细胞向大脑内皮细胞身份,进步体外血脑屏障模型.
科学领域:
- 干细胞生物学 干细胞生物学
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 可靠的血脑屏障 (BBB) 模型对于治疗开发和疾病研究至关重要.
- 大脑微血管内皮细胞 (BMEC) 是BBB功能的核心,但从人类多能干细胞 (hPSC) 中生成它们缺乏明确的转录控制.
研究的目的:
- 确定可以诱导来自不成熟ECs的大脑内皮细胞 (EC) 命运的主转录因子 (TFs).
- 在TF引入hPSC衍生EC后评估转录组变化.
主要方法:
- 通过ETV2过度表达生成hPSC衍生的不成熟EC.
- 进行了EC转录组的元分析,以确定候选TFs.
- 执行了结合式TF过度表达与条码和单细胞转录组学.
主要成果:
- 确定了一组具有怀孕期中期人类大脑EC特征的细胞子集.
- 在这些细胞中观察到ZIC3,TFAP2C,TFAP2A和DLX2的显著丰富.
- 这些TF显示了将hPSC-EC指向BMEC类细胞的潜力.
结论:
- 已识别的TFs (ZIC3,TFAP2C,TFAP2A,DLX2) 可能会将hPSC-EC引导到类似BMEC的表型.
- 这些发现支持开发改进的体外BBB模型,用于研究和药物发现.
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