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Microarray Analysis of Transcriptome of Medulla Identifies Potential Biomarkers for Parkinson’s Disease

机译:延髓转录组的微阵列分析确定了帕金森氏病的潜在生物标志物

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To complement the molecular pathways contributing to Parkinson’s disease (PD) and identify potential biomarkers, gene expression profiles of two regions of the medulla were compared between PD patients and control. GSE19587 containing two groups of gene expression profiles [6 dorsal motor nucleus of the vagus (DMNV) samples from PD patients and 5 from controls, 6 inferior olivary nucleus (ION) samples from PD patients and 5 from controls] was downloaded from Gene Expression Omnibus. As a result, a total of 1569 and 1647 differentially expressed genes (DEGs) were, respectively, screened in DMNV and ION with limma package of R. The functional enrichment analysis by DAVID server (the Database for Annotation, Visualization and Integrated Discovery) indicated that the above DEGs may be involved in the following processes, such as regulation of cell proliferation, positive regulation of macromolecule metabolic process, and regulation of apoptosis. Further analysis showed that there were 365 common DEGs presented in both regions (DMNV and ION), which may be further regulated by eight clusters of microRNAs retrieved with WebGestalt. The genes in the common DEGs-miRNAs regulatory network were enriched in regulation of apoptosis process via DAVID analysis. These findings could not only advance the understandings about the pathogenesis of PD, but also suggest potential biomarkers for this disease.
机译:为了补充有助于帕金森氏病(PD)的分子途径并鉴定潜在的生物标记物,比较了PD患者与对照组之间髓质两个区域的基因表达谱。 GSE19587包含两组基因表达谱[从Gene Expression Omnibus下载了6个PD患者的迷走神经背运动核(DMNV)样本和5个来自对照的迷走神经下核(ION)样本和5个来自对照的迷走神经下核(ION)样本] 。结果,在带有R的limma软件包的DMNV和ION中分别筛选了总共1569和1647个差异表达基因(DEG)。通过DAVID服务器(注释,可视化和集成发现数据库)的功能富集分析表明上述DEGs可能参与以下过程,例如细胞增殖的调控,大分子代谢过程的正调控以及细胞凋亡的调控。进一步的分析表明,在两个区域(DMNV和ION)中均存在365种常见的DEG,这可能由用WebGestalt检索到的8个microRNA簇进一步调控。常见的DEGs-miRNA调控网络中的基因通过DAVID分析丰富了对凋亡过程的调控。这些发现不仅可以促进对PD发病机理的理解,而且还可以暗示该疾病的潜在生物标志物。

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