MiR-190a potentially ameliorates postoperative cognitive dysfunction by regulating Tiam1

作者：Qiang Liu, Aisheng Hou, Yongyi Zhang, Ying Guo, Jingjing Li, Yinghao Yao, Kaimeng Niu, Hao Li, Yunlong Ma, Jiangbei Cao · 发表于：BMC Genomics · 年份：2019 · DOI：10.1186/s12864-019-6035-0 · 被引用次数：25 · 研究领域：Intensive Care Unit Cognitive Disorders、Anesthesia and Neurotoxicity Research、S100 Proteins and Annexins

BACKGROUND: Postoperative cognitive dysfunction (POCD) affects a large number of post-surgery patients, especially for the elderly. However, the etiology of this neurocognitive disorder is largely unknown. Even if several studies have reported a small number of miRNAs as the essential modulatory factors in POCD, these findings are still rather limited. The aim of current study was to screen the POCD-related miRNAs in the hippocampus tissues and investigate the target genes of differentially expressed miRNAs and their biological functions underlying POCD pathophysiology. METHODS: The miRNA microarray was used to find the abnormal expression of miRNAs in the hippocampus tissues from the POCD model mice to normal mice (Discovery cohort, 3 vs 3). The nominal significant results were validated in an independent sample of hippocampus tissues of 10 mice based on same miRNA microarray (Replication cohort, 5 vs 5). Expression level of the most significantly abnormal miRNA was further validated by real-time quantitative polymerase chain reaction (PCR). To determine the expression pattern among miRNAs and genes and detect the interactions, we conducted a weighted gene co-expression network analysis (WGCNA) in the miRNAs and genes expression data from hippocampus tissue of wild type mice (n = 24). The target genes of miRNAs were predicted using the miRWalk3.0 software. Furthermore, we used the ClueGO software to decipher the pathways network and reveal the biological functions of target ...