Differentiation of human oligodendrocytes from pluripotent stem cells.

Differentiation of human oligodendrocytes from pluripotent stem cells.
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DOI:
10.1038/nprot.2009.186
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发表时间:
2009
期刊:
影响因子:
14.8
通讯作者:
--
中科院分区:
生物学1区
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--
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我们开发了一个由四部分组成的方案,根据发育原理将人类胚胎干细胞 (hESC) 与少突胶质细胞祖细胞 (OPC) 区分开来。在前两周,hESC 被诱导分化为神经上皮细胞,形成神经管样玫瑰花结。在接下来的 10 天中,在视黄酸 (RA) 和音刺猬 (SHH) 存在的情况下,这些神经上皮细胞被指定为表达 OLIG2 的祖细胞。再用成纤维细胞生长因子 2 (FGF2) 处理 10 天后,这些祖细胞转化为表达 OLIG2 和 NKX2.2 的前 OPC。最后,前 OPC 需要 8-9 周分化为 OPC,后者表达少突胶质细胞的其他标记物,例如 SOX10、血小板源性生长因子受体 α (PDGFRα) 和 NG2。该协议的独特之处是在第三部分中使用 FGF2 促进胶质前 OPC 的分化,以及在前 OPC 向 OPC 过渡期间去除 FGF2。这种为期 3 个月的分化方案始终能产生高纯度的 OPC,能够在体内产生髓鞘。
We have developed a four-part protocol to differentiate human embryonic stem cells (hESCs) to oligodendrocyte progenitor cells (OPCs) according to developmental principles. In the first 2 weeks, hESCs are induced to differentiate into neuroepithelial cells, which form neural tube–like rosettes. In the following 10 d, these neuroepithelial cells are specified to OLIG2-expressing progenitors in the presence of retinoic acid (RA) and sonic hedgehog (SHH). Upon treatment with fibroblast growth factor 2 (FGF2) for another 10 d, these progenitors convert to OLIG2 and NKX2.2-expressing pre-OPCs. Finally, the pre-OPCs take 8–9 weeks to differentiate into OPCs, which express additional markers of oligodendrocytes, such as SOX10, platelet-derived growth factor receptor alpha (PDGFRα) and NG2. The unique aspects of the protocol are the use of FGF2 to promote the differentiation of gliogenic pre-OPCs in the third part and the removal of FGF2 during the transition of pre-OPCs to OPCs. This 3-month differentiation protocol consistently yields OPCs of high purity capable of producing myelin sheaths in vivo.
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