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Diversity of Ion Channels in Human Bone Marrow Mesenchymal Stem Cells from Amyotrophic Lateral Sclerosis Patients

机译:肌萎缩性侧索硬化患者骨髓间充质干细胞中离子通道的多样性

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摘要

Human bone marrow mesenchymal stem cells (hBM-MSCs) represent a potentially valuable cell type for clinical therapeutic applications. The present study was designed to evaluate the effect of long-term culturing (up to 10th passages) of hBM-MSCs from eight individual amyotrophic lateral sclerosis (ALS) patients, focusing on functional ion channels. All hBM-MSCs contain several MSCs markers with no significant differences, whereas the distribution of functional ion channels was shown to be different between cells. Four types of K+ currents, including noise-like Ca+2-activated K+ current (IKCa), a transient outward K+ current (Ito), a delayed rectifier K+ current (IKDR), and an inward-rectifier K+ current (Kir) were heterogeneously present in these cells, and a TTX-sensitive Na+ current (INa,TTX) was also recorded. In the RT-PCR analysis, Kv1.1, heag1, Kv4.2, Kir2.1, MaxiK, and hNE-Na were detected. In particular, INa,TTX showed a significant passage-dependent increase. This is the first report showing that functional ion channel profiling depend on the cellular passage of hBM-MSCs
机译:人骨髓间充质干细胞(hBM-MSC)代表了对临床治疗应用具有潜在价值的细胞类型。本研究旨在评估来自八名肌萎缩性侧索硬化症(ALS)患者的hBM-MSC的长期培养(至第10代)的效果,重点是功能性离子通道。所有的hBM-MSC都包含多个MSCs标记,没有显着差异,而功能离子通道的分布在细胞之间显示为不同。四种类型的K +电流包括:类似噪声的Ca + 2激活的K +电流(IKCa),瞬态向外K +电流(Ito),延迟整流器K +电流(IKDR)和内部整流器K +电流(Kir)。这些细胞中异质存在,并且还记录了TTX敏感的Na +电流(INa,TTX)。在RT-PCR分析中,检测到Kv1.1,heag1,Kv4.2,Kir2.1,MaxiK和hNE-Na。特别是,INa,TTX表现出显着的传代依赖性增加。这是第一个报告,表明功能性离子通道谱取决于hBM-MSC的细胞传代

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