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在食道早期发育过程中,STAT3调节基底细胞身份和形态发生
Secunda W Kariuki1, Yosuke Mitani1, Dominique D Bailey2
1Herbert Irving Comprehensive Cancer Center, Division of Digestive and Liver Diseases, Columbia University Irving Medical Center, New York, NY, USA.
bioRxiv : the preprint server for biology
|August 6, 2025
概括
信号转换器和转录3激活器 (STAT3) 对于人类食道前细胞的发育和分化至关重要. STAT3调节基底细胞身份和上皮细胞形态发生,这对于食道血统的承诺至关重要.
科学领域:
- 发展生物学 发展生物学
- 干细胞生物学 干细胞生物学
- 皮质生物学 皮质生物学
背景情况:
- 转录因子STAT3 (信号转换器和转录激活器3) 在上皮细胞生物学中已知作用.
- 它在人类食道发育中的特定功能尚不清楚.
研究的目的:
- 研究STAT3在调节人类食道上皮分化的作用.
- 通过使用干细胞模型,了解早期人类食道血统承诺期间STAT3的功能.
主要方法:
- 利用2D和3D人类诱导的多能干细胞 (hiPSC) 衍生器官平台.
- 使用CRISPR介导的淘汰和siRNA来抑制STAT3功能.
- 分析了关键食道原生细胞 (EPC) 和分化标记物的表达,包括TP63.
主要成果:
- 对于最终的内皮和前内皮特征,STAT3是没有必要的.
- STAT3 对于食道原生细胞 (EPC) 规范和分化变得至关重要.
- 抑制STAT3会损害EPC标记物的表达 (例如TP63),减少上皮细胞的增殖,并破坏3D有机体的形成.
- 在人类胎儿食道组织和hiPSC衍生的有机体中,STAT3的表达很高.
- 在小鼠食道中,STAT3删除没有影响上皮质结构,这表明了特定物种的作用.
结论:
- STAT3是人类食道发育中的基底细胞身份的关键调节者.
- 在人类食道发育过程中,STAT3在上皮形态发生过程中发挥着至关重要的作用.
- STAT3代表了早期人类食道血统承诺的关键发育检查点.
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