The expression of Sox17 identifies and regulates haemogenic endothelium.

The expression of Sox17 identifies and regulates haemogenic endothelium.
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DOI:
10.1038/ncb2724
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发表时间:
2013-05
影响因子:
21.3
通讯作者:
--
中科院分区:
生物学1区
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尽管造血干细胞(HSC)是由一群特殊的内皮细胞(称为造血内皮细胞)发育而来的,但控制这种转变的调控途径尚未明确。在这里,我们确定Sox 17作为一个关键的调控造血内皮细胞的发展。对Sox 17-GFP报告小鼠的分析表明,Sox 17在造血内皮细胞和新生的HSC中表达,并且是HSC发育所必需的。使用小鼠胚胎干细胞分化模型,我们发现Sox 17也在体外生成的造血内皮细胞中表达,并且通过Notch信号通路在造血内皮细胞的发育和/或扩增中起关键作用。总之,这些发现将Sox 17定位为造血内皮和造血发育的关键调节因子。
Although it is well recognized that haematopoietic stem cells (HSCs) develop from a specialized population of endothelial cells known as haemogenic endothelium, the regulatory pathways that control this transition are not well defined. Here we identify Sox17 as a key regulator of haemogenic endothelial development. Analysis ofSox17–GFP reporter mice revealed that Sox17 is expressed in haemogenic endothelium and emerging HSCs and that it is required for HSC development. Using the mouse embryonic stem cell differentiation model, we show that Sox17 is also expressed in haemogenic endothelium generatedin vitroand that it plays a pivotal role in the development and/or expansion of haemogenic endothelium through the Notch signalling pathway. Taken together, these findings position Sox17 as a key regulator of haemogenic endothelial and haematopoietic development.
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发表时间: 2009-02-12
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