Differential expression of miRNA-146a-regulated inflammatory genes in human primary neural, astroglial and microglial cells.

Differential expression of miRNA-146a-regulated inflammatory genes in human primary neural, astroglial and microglial cells.
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DOI:
10.1016/j.neulet.2011.05.044
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发表时间:
2011-07-20
影响因子:
2.5
通讯作者:
Lukiw WJ
Lukiw WJ
中科院分区:
医学4区
文献类型:
--
作者:
Li YY;Cui JG;Dua P;Pogue AI;Bhattacharjee S;Lukiw WJ

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微小 RNA-146a (miRNA-146a) 是一种可诱导的 22 个核苷酸的小 RNA,在阿尔茨海默病 (AD) 大脑中过度表达。上调的 miRNA-146a 靶向多种炎症相关和膜相关的信使 RNA (mRNA),包括编码补体因子 H (CFH) 和白细胞介素 1 受体相关激酶 1 (IRAK-1) 的信使 RNA,导致其表达显着降低(p < 0.05,方差分析)。在这项研究中,我们测定了 miRNA-146a、CFH、IRAK-1 和 tetraspanin-12 (TSPAN12) 在原代人神经元-胶质细胞 (HNG) 共培养物、经 Aβ42 肽和肿瘤坏死因子 α (TNFα) 应激的人星形胶质细胞 (HAG) 和小胶质细胞 (HMG) 细胞中的丰度。结果表明 miRNA-146a 与 CFH、IRAK-1 和 TSPAN12 表达水平之间存在一致的负相关关系,并表明 HNG、HAG 和 HMG 细胞类型各自对 Aβ42 肽 + TNFα 触发的应激有不同的反应。虽然在 HAG 细胞中发现了最强的 miRNA-146a-IRAK-1 反应,在 HNG 细胞中发现了最大的 miRNA-146a-TSPAN12 反应,在 HMG 细胞(大脑的“常驻清除巨噬细胞”)中发现了最显着的 miRNA-146a-CFH 变化。
Micro RNA-146a (miRNA-146a) is an inducible, 22 nucleotide, small RNA over-expressed in Alzheimer’s disease (AD) brain. Up-regulated miRNA-146a targets several inflammation-related and membrane-associated messenger RNAs (mRNAs), including those encoding complement factor-H (CFH) and the interleukin-1 receptor associated kinase-1 (IRAK-1), resulting in significant decreases in their expression (p < 0.05, ANOVA). In this study we assayed miRNA-146a, CFH, IRAK-1 and tetraspanin-12 (TSPAN12), abundances in primary human neuronal-glial (HNG) co-cultures, in human astroglial (HAG) and microglial (HMG) cells stressed with Aβ42 peptide and tumor necrosis factor alpha (TNFα). The results indicate a consistent inverse relationship between miRNA-146a and CFH, IRAK-1 and TSPAN12 expression levels, and indicate that HNG, HAG and HMG cell types each respond differently to Aβ42-peptide + TNFα-triggered stress. While the strongest miRNA-146a-IRAK-1 response was found in HAG cells, the largest miRNA-146a-TSPAN12 response was found in HNG cells, and the most significant miRNA-146a-CFH changes were found in HMG cells, the ‘resident scavenging macrophages’ of the brain.
DOI: 10.1016/j.neulet.2010.09.079
发表时间: 2011-01-03
影响因子: 2.5
作者:
Li YY;Cui JG;Hill JM;Bhattacharjee S;Zhao Y;Lukiw WJ
通讯作者: Lukiw WJ
DOI: 10.1074/jbc.271.45.28458
发表时间: 1996-11-08
影响因子: 4.8
作者:
Ershov, AV;Lukiw, WJ;Bazan, NG
通讯作者: Bazan, NG
DOI: 10.1007/s11060-008-9688-0
发表时间: 2009-01-01
影响因子: 3.9
作者:
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通讯作者: Culicchia, F.
DOI: 10.1097/wnr.0b013e32833da51a
发表时间: 2010-10-06
期刊: NEUROREPORT
影响因子: 1.7
作者:
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通讯作者: Hill, James M.
DOI: 10.1016/j.neulet.2010.03.054
发表时间: 2010-05-26
影响因子: 2.5
作者:
Pogue, A. I.;Cui, J. G.;Lukiw, W. J.
通讯作者: Lukiw, W. J.