Transcriptional heterogeneity in mouse embryonic stem cells.

Transcriptional heterogeneity in mouse embryonic stem cells.
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小鼠胚胎干细胞的转录异质性。

DOI:
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发表时间:
2009
期刊:
Reproduction, Fertility and Development
影响因子:
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通讯作者:
Tetsuya S. Tanaka
Tetsuya S. Tanaka
中科院分区:
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文献类型:
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作者:
Tetsuya S. Tanaka

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胚胎干细胞是一种来源于早期胚胎的干细胞,在体外可以作为未分化细胞无限重复自我更新的细胞分裂周期,并在体内产生所有特化细胞类型。然而,在体外操纵ES细胞分化是一个挑战,至少部分原因是异源基因诱导。最近的实验证据表明,培养的未分化的小鼠ES细胞表现出Dppa3、Nanog、REx1、PECAM1和Zscan4的异质性表达,以及在特定细胞类型中正常表达的基因(brachyury/T、Rhox6/9和Twist2)。Nanog阴性、REx1阴性或T阳性的ES细胞亚群具有独特的分化潜能。因此,研究ES细胞亚群的产生机制将有助于我们更好地把握ES细胞的命运,有助于我们理解胚胎发育的本质。
The embryonic stem (ES) cell is a stem cell derived from early embryos that can indefinitely repeat self-renewing cell division cycles as an undifferentiated cell in vitro and give rise to all specialised cell types in the body. However, manipulating ES cell differentiation in vitro is a challenge due to, at least in part, heterogeneous gene induction. Recent experimental evidence has demonstrated that undifferentiated mouse ES cells maintained in culture exhibit heterogeneous expression of Dppa3, Nanog, Rex1, Pecam1 and Zscan4 as well as genes (Brachyury/T, Rhox6/9 and Twist2) normally expressed in specialised cell types. The Nanog-negative, Rex1-negative or T-positive ES cell subpopulation has a unique differentiation potential. Thus, studying the mechanism that generates ES cell subpopulations will improve manipulation of ES cell fate and help our understanding of the nature of embryonic development.
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