人类多能干细胞的定向分化为胰腺胆道共原体样群
Xiang Guan1, Xiaoni Chen2, Ying Xu1
1Department of Developmental and Regenerative Biology, iORGANtech Limited Company (Suzhou), Suzhou, 215000, China.
Biochemical and biophysical research communications
|September 4, 2025
概括
研究人员开发了一种从人类干细胞中制造出肝外胆道细胞的新方法. 这一突破使得胆道疾病的研究和新疗法的开发成为可能.
科学领域:
- 干细胞生物学
- 发育生物学
- 胃肠病学
背景情况:
- 肝外胆道疾病缺乏有效的实验模型,因为组织获取有限.
- 现有的多能干细胞 (PSC) 模型成功产生肝,肝内胆道和胰腺细胞,但不能产生肝外胆道细胞.
- 由于缺乏特定的发育线索,在体外产生肝外胆道细胞具有挑战性.
研究的目的:
- 建立一种新的方法,用于将人类PSC分化为胰腺胆道原始细胞 (PBPLC).
- 在体外生成肝外胆道细胞模型,用于疾病研究和药物查.
主要方法:
- 使用FGF,Vc,WNT,BMP和视网膜酸信号的时间操纵对人类PSC进行定向差异化.
- 具有PDX1+SOX17+TBX3-表型的3D PBPLC球体的生成.
- 通过添加特定的信号分子,进一步将PBPLC分化为胰岛贝塔细胞或胆囊类器官.
主要成果:
- 从人类PSC成功生成胰腺胆道原始细胞 (PBPLC).
- PBPLCs表现为双潜能,分化为产生胰岛素的胰腺β类细胞或胆囊类器官.
- 胆囊器官具有本地胆囊的结构和分子特征,包括肝外胆道细胞标记物的丰富.
结论:
- 开发的方法为从PSC生成肝外胆道细胞提供了一种新方法.
- 这项突破有助于研究胰腺胆道发育和疾病.
- 来自PSC的PBPLC和器官为疾病建模和药物发现提供了有价值的平台.
相关概念视频
01:22iPS Cell Differentiation
2.8K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
2.8K
01:13Induced Pluripotent Stem Cells
24.4K
Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
24.4K