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Hippocampal mRNA expression profiling in mice exposed to chronic unpredictable mild stress.
Brain Research Bulletin ( IF 3.8 ) Pub Date : 2020-06-11 , DOI: 10.1016/j.brainresbull.2020.06.001
Yanlin Tao 1 , Zhejun Xie 1 , Jiachen Shi 1 , Rongliwen Ou 2 , Hui Wu 1 , Hailian Shi 1 , Fei Huang 1 , Xiaojun Wu 1
Affiliation  

Depression is a state of low mood and aversion to activity, affecting a person's thoughts, behavior, motivation, feelings and sense of well-being, which is associated with dramatical gene expression changes in hippocampus. Rodents induced by chronic unpredictable mild stress (CUMS) demonstrate typical depression-like behaviors similar to clinical patients, therefore, are commonly used as a model for depression and antidepressant study. In order to enhance our understanding of the molecular mechanisms of the pathogenesis of depression, in the present study, the hippocampal mRNA expression profile of mice exposed to CUMS for 5 weeks was sequenced using Illumina HiSeq 4000 platform followed by enrichment analysis, including Hierarchical Cluster, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and protein-protein interaction (PPI) network. Totally, 346 differently expressed mRNAs, including 208 downregulated and 138 upregulated, were identified in the hippocampus of the CUMS mice. KEGG biological pathway analysis showed that the upregulated and downregulated mRNAs were mostly enriched in 29 pathways and 8 pathways, respectively. PPI network analysis exposed that glyceraldehyde 3-phosphate dehydrogenase was the crucial node with high connectivity degree. Additionally, most of these genes in PPI network analysis have previously been linked to energy metabolism and corticosterone responses. Overall, our results indicate the possible novel molecular targets for the therapy of depression.



中文翻译:

暴露于慢性不可预测的轻度压力的小鼠的海马 mRNA 表达谱。

抑郁症是一种情绪低落和厌恶活动的状态,会影响一个人的思想、行为、动机、感觉和幸福感,这与海马体中剧烈的基因表达变化有关。由慢性不可预测的轻度压力 (CUMS) 诱导的啮齿动物表现出与临床患者相似的典型抑郁样行为,因此通常用作抑郁症和抗抑郁药研究的模型。为了加深我们对抑郁症发病分子机制的理解,在本研究中,使用 Illumina HiSeq 4000 平台对暴露于 CUMS 5 周的小鼠的海马 mRNA 表达谱进行测序,然后进行富集分析,包括 Hierarchical Cluster,京都基因和基因组百科全书 (KEGG) 途径和蛋白质-蛋白质相互作用 (PPI) 网络。在 CUMS 小鼠的海马体中总共鉴定出 346 种不同表达的 mRNA,包括 208 种下调和 138 种上调。KEGG 生物学通路分析表明,上调和下调的 mRNA 分别主要富集在 29 条通路和 8 条通路中。PPI网络分析表明,3-磷酸甘油醛脱氢酶是连接度高的关键节点。此外,PPI 网络分析中的大多数这些基因以前都与能量代谢和皮质酮反应有关。总体而言,我们的结果表明治疗抑郁症可能存在新的分子靶点。KEGG 生物学通路分析表明,上调和下调的 mRNA 分别主要富集在 29 条通路和 8 条通路中。PPI网络分析表明,3-磷酸甘油醛脱氢酶是连接度高的关键节点。此外,PPI 网络分析中的大多数这些基因以前都与能量代谢和皮质酮反应有关。总体而言,我们的结果表明治疗抑郁症可能存在新的分子靶点。KEGG 生物学通路分析表明,上调和下调的 mRNA 分别主要富集在 29 条通路和 8 条通路中。PPI网络分析表明,3-磷酸甘油醛脱氢酶是连接度高的关键节点。此外,PPI 网络分析中的大多数这些基因以前都与能量代谢和皮质酮反应有关。总体而言,我们的结果表明治疗抑郁症可能存在新的分子靶点。PPI 网络分析中的大多数这些基因以前都与能量代谢和皮质酮反应有关。总体而言,我们的结果表明治疗抑郁症可能存在新的分子靶点。PPI 网络分析中的大多数这些基因以前都与能量代谢和皮质酮反应有关。总体而言,我们的结果表明治疗抑郁症可能存在新的分子靶点。

更新日期:2020-06-11
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