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首页> 外文期刊>Biomaterials >A protein interaction network for the analysis of the neuronal differentiation of neural stem cells in response to titanium dioxide nanoparticles.
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A protein interaction network for the analysis of the neuronal differentiation of neural stem cells in response to titanium dioxide nanoparticles.

机译:一个蛋白质相互作用网络,用于分析对二氧化钛纳米颗粒反应的神经干细胞的神经元分化。

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The effects of titanium dioxide (TiO(2)) nanoparticles (NPs) on the differentiation of neural stem cells are reported. Our findings indicate that TiO(2) NPs lead to a differentiational tendency towards neurons from neural stem cells, suggesting TiO(2) NPs might be a beneficial inducer for neuronal differentiation. To insight into the possible molecular mechanism of the neuronal differentiation, we conducted a protein-protein interaction network (PIN) analysis. To this end, a global mapping of target proteins induced by TiO(2) NPs was first made by a 2-dimensional electrophoresis analysis. Results showed that 9 proteins were significantly changed and then they were subjected to the mass spectrometric assay. All 9 identified proteins are involved in signal, molecular chaperones, cytoskeleton, and nucleoprotein. Further, based on our experimental data and DIP, IntAct-EBI, GRID database, a protein-protein interaction network was constructed, which provides highly integrated information exhibiting the protein-protein interaction. By analysis of the gene expression, the signal pathway involving Cx43 phosphorylation, which is negatively regulated by the protein kinase C epsilon (PKCepsilon), is demonstrated. It is inferred that PKCepsilon plays a pivotal negative role in the neuronal differentiation of stem neural cells in response to the TiO(2) NPs exposure.
机译:报告了二氧化钛(TiO(2))纳米粒子(NPs)对神经干细胞分化的影响。我们的发现表明TiO(2)NPs导致神经干细胞向神经元分化,这表明TiO(2)NPs可能是神经元分化的有益诱导剂。为了洞察神经元分化的可能分子机制,我们进行了蛋白质-蛋白质相互作用网络(PIN)分析。为此,首先通过二维电泳分析对TiO(2)NPs诱导的靶蛋白进行了全局定位。结果显示9种蛋白质发生了显着变化,然后进行了质谱分析。鉴定出的所有9种蛋白质均涉及信号,分子伴侣,细胞骨架和核蛋白。此外,根据我们的实验数据和DIP,IntAct-EBI,GRID数据库,构建了蛋白质-蛋白质相互作用网络,该网络提供了高度集成的信息,展现了蛋白质-蛋白质相互作用。通过对基因表达的分析,表明了涉及Cx43磷酸化的信号通路,该信号通路被蛋白激酶Cε(PKCepsilon)负调控。可以推断,PKCepsilon在干神经细胞的神经元分化中对TiO(2)NPs的暴露起关键作用。

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