三种间充质干细胞向神经元样细胞的诱导与分化

Three kinds of mesenchymal stem cells: differentiating into neuron-like cells

背景:作为采集方便、来源广泛、潜能巨大的细胞来源,干细胞在疾病细胞疗法的研究已发展壮大,其中最常见使用的干细胞有骨髓间充质干细胞、胎盘间充质干细胞和脐血间充质干细胞。目的:比较骨髓间充质干细胞、胎盘间充质干细胞和脐血间充质干细胞与神经细胞的共培养后的变化。方法:体外分离培养人骨髓间充质干细胞、人胎盘间充质干细胞和人脐血间充质干细胞,通过Transwell平板与神经细胞共培养,观察间充质干细胞分化成神经细胞的形态及神经元特异性烯醇化酶表达的变化。结果与结论:神经共培养系统中3种间充质干细胞均逐渐变为星状,并出现相互连接,且阳性表达神经元特异性烯醇酶。表明神经细胞提供的微环境可以诱导及促进3种间充质干细胞向神经元样细胞分化。

BACKGROUND:Stem cells,characterized with convenient collection,wide sources and great potential,have been developed in the cell therapy.The most commonly used stem cells include bone marrow mesenchymal stem cells,placental mesenchymal stem cells and umbilical cord blood mesenchymal stem cells.OBJECTIVE:To compare the biological changes in bone marrow mesenchymal stem cells,placental mesenchymal stem cells and umbilical cord blood mesenchymal stem cells after co-cultured with nerve cells.METHODS:Human bone marrow mesenchymal stem cells,human placental mesenchymal stem cells and human umbilical cord blood mesenchymal stem cells were isolated and cultured in vitro.The morphological changes of mesenchymal stem cells differentiated into nerve cells were observed by co-culture with Transwell culture plates.The expression of neuron-specific enolase was detected after induction.RESULTS AND CONCLUSION:In the co-culture system,these three kinds of mesenchymal stem cells gradually formed a star-like shape and were interconnected.Moreover,all the cells were positive for neuron-specific enolase.These findings reveal that the microenvironment provided by nerve cells can induce and promote the differentiation of three kinds of mesenchymal stem cells into neuron-like cells.