Glycocalyx remodeling with proteoglycan mimetics promotes neural specification in embryonic stem cells.

Glycocalyx remodeling with proteoglycan mimetics promotes neural specification in embryonic stem cells.
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用蛋白聚糖模仿糖蛋白重塑促进胚胎干细胞中的神经规范。

DOI:
10.1021/ja505012a
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发表时间:
2014-07-30
影响因子:
15
通讯作者:
Godula, Kamil
Godula, Kamil
中科院分区:
化学1区
文献类型:
--
作者:
Huang, Mia L.;Smith, Raymond A. A.;Trieger, Greg W.;Godula, Kamil

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生长因子(GF)信号传导是干细胞命运的关键决定因素。GF与其受体的相互作用通常由硫酸乙酰肝素蛋白聚糖(HSPG)介导。在这里,我们报告了一种细胞表面工程策略,利用HSPGs的功能,以促进胚胎干细胞(ESCs)的分化。我们已经产生了合成的新蛋白聚糖(neoproteoglycans,neoPGs)与成纤维细胞生长因子2(FGF2)的亲和力,并将它们引入到细胞质膜缺乏HS的生物合成。在那里,neoPG承担了天然HSPGs的功能,挽救了FGF 2介导的激酶活性,并促进了神经特化。这种糖萼重塑策略是通用的,并可能适用于其他类型的分化。
Growth factor (GF) signaling is a key determinant of stem cell fate. Interactions of GFs with their receptors are often mediated by heparan sulfate proteoglycans (HSPGs). Here, we report a cell surface engineering strategy that exploits the function of HSPGs to promote differentiation in embryonic stem cells (ESCs). We have generated synthetic neoproteoglycans (neoPGs) with affinity for the fibroblast growth factor 2 (FGF2) and introduced them into plasma membranes of ESCs deficient in HS biosynthesis. There, the neoPGs assumed the function of native HSPGs, rescued FGF2-mediated kinase activity, and promoted neural specification. This glycocalyx remodeling strategy is versatile and may be applicable to other types of differentiation.
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