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首页> 外文期刊>Cellular Signalling >The bioactive lipid sphingosylphosphorylcholine induces differentiation of mouse embryonic stem cells and human promyelocytic leukaemia cells
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The bioactive lipid sphingosylphosphorylcholine induces differentiation of mouse embryonic stem cells and human promyelocytic leukaemia cells

机译:具有生物活性的脂质鞘氨醇磷酸胆碱可诱导小鼠胚胎干细胞和人早幼粒细胞白血病细胞分化

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Sphingosylphosphorylcholine (SPC) is the major component of high-density lipoproteins (HDL) in blood plasma. The bioactive lipid acts mainly via G protein coupled receptors (GPCRs). Similar to ligands of other GPCRs, SPC has multiple biological roles including the regulation of proliferation, migration, angiogenesis, wound healing and heart rate. Lysophospholipids and their receptors have also been implicated in cell differentiation. A potential role of SPC in stem cell or tumour cell differentiation has been elusive so far. Here we examined the effect of SPC on the differentiation of mouse embryonic stem (ES) cells and of human NB4 promyelocytic leukemia cells, a well established tumour differentiation model. Our data show that mouse embryonic stem cells and NB4 cells express the relevant GPCRs for SPC. We demonstrate both at the level of morphology and of gene expression that SPC induces neuronal and cardiac differentiation of mouse ES cells. Furthermore, SPC induces differentiation of NB4 cells by a mechanism which is critically dependent on the activity of the MEK-ERK cascade. Thus, the bioactive lipid SPC is a novel differentiation inducing agent both for mouse ES cells, but also of certain human tumour cells. (c) 2006 Elsevier Inc. All rights reserved.
机译:鞘氨醇磷酸胆碱(SPC)是血浆中高密度脂蛋白(HDL)的主要成分。生物活性脂质主要通过G蛋白偶联受体(GPCR)起作用。与其他GPCR的配体相似,SPC具有多种生物学作用,包括调节增殖,迁移,血管生成,伤口愈合和心率。溶血磷脂及其受体也与细胞分化有关。到目前为止,SPC在干细胞或肿瘤细胞分化中的潜在作用尚不清楚。在这里,我们检查了SPC对小鼠胚胎干(ES)细胞和人NB4早幼粒细胞白血病细胞(成熟的肿瘤分化模型)分化的影响。我们的数据表明,小鼠胚胎干细胞和NB4细胞表达SPC相关的GPCR。我们在形态学和基因表达水平上都证明了SPC诱导小鼠ES细胞的神经元和心脏分化。此外,SPC通过关键依赖于MEK-ERK级联活性的机制诱导NB4细胞分化。因此,生物活性脂质SPC既是小鼠ES细胞的新分化诱导剂,也是某些人肿瘤细胞的新分化诱导剂。 (c)2006 Elsevier Inc.保留所有权利。

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