Cell Stem Cell:人类多功能干细胞在体外成功分化成结肠组织

2017-06-24 海北 MedSci原创

近日, James M. Wells课题组在细胞干细胞杂志发文,阐述了从人类多功能干细胞出发的人类结肠组织的发育。

已有的报道显示,人类多功能干细胞hESC)能够被成功分化为胃部组织以及小肠组织。这彻底改变了科学界对于胃肠道发育以及疾病的研究。然而,远端肠部组织,如盲肠和结肠的体外诱导更具挑战性。

近日, James M. Wells课题组在细胞干细胞杂志发文,阐述了从人类多功能干细胞出发的人类结肠组织的发育。他们发现,在发育和产后的肠道上皮中,BMP信号通路对于建立一个后STAB2+结构域是必须的。BMP信号的简单激活就足以诱导后HOX编码,并促使人类多功能干细胞产生的肠管组织分化成结肠组织。在体外得到的结肠组织能够表达结肠标志物,并且含有结肠特异性的细胞群。此外,将体外得到的结肠组织移植入小鼠体内后,结肠组织会经历形态变化以及成熟过程,形成具有人类结肠分子,细胞和形态特征的组织。

这些数据显示,人类后肠向结肠的分化是依赖于BMP的。这对于研究肠炎以及结肠癌等疾病具有潜在价值。

原始出处:

Jorge O. Mu´ nera et al. Differentiation of Human Pluripotent Stem Cells into Colonic Organoids via Transient Activation of BMP Signaling. 2017, Cell Stem Cell 21, 1–14. DOI: https://doi.org/10.1016/j.stem.2017.05.020.

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    2017-08-20 维他命
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