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MicroRNAs as markers for neurally committed CD133+/CD34+ stem cells derived from human umbilical cord blood

机译:MicroRNA作为人类脐带血来源的神经定性CD133 + / CD34 +干细胞的标志物

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Neural differentiation of the CD133+/CD34+ subpopulation of human umbilical cord blood stem cells was investigated, and neuro-miR (mir-9 and mir-124) expression was examined. An efficient induction protocol for neural differentiation of hematopoietic stem cells together with the exclusion of retinoic acid in this process was also studied. Transcription of some neural markers such as microtubule-associated protein-2, beta-tubulin III, and neuron-specific enolase was evaluated by real-time PCR, immunocytochemistry, and western blotting. Increased expression of neural indicators in the treated cells confirmed the appropriate neural differentiation, which supported the high efficiency of our defined neuronal induction protocol. Verified high expression of neuro-miRNAs along with neuronal specific proteins not only strengthens the regulatory role of miRNAs in determining stem cell fate but also introduces these miRNAs as novel indicators of neural differentiation. These data highlight the prominent therapeutic potential of hematopoietic stem cells for use in cell therapy of neurodegenerative diseases.
机译:研究了人脐带血干细胞CD133 + / CD34 +亚群的神经分化,并检测了神经miR(mir-9和mir-124)的表达。还研究了在此过程中用于造血干细胞神经分化以及排除视黄酸的有效诱导方案。通过实时PCR,免疫细胞化学和蛋白质印迹评估了一些神经标记的转录,例如微管相关蛋白2,β-微管蛋白III和神经元特异性烯醇化酶。在处理的细胞中神经指示剂表达的增加证实了适当的神经分化,这支持了我们定义的神经元诱导方案的高效率。经过验证的神经miRNA与神经元特异性蛋白的高表达不仅增强了miRNA在确定干细胞命运中的调控作用,而且将这些miRNA引入了神经分化的新指标。这些数据强调了造血干细胞在神经退行性疾病的细胞治疗中的巨大治疗潜力。

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