globalchange  > 过去全球变化的重建
DOI: 10.3389/fimmu.2019.01295
WOS记录号: WOS:000470992300001
论文题名:
miRNAs Involved in M1/M2 Hyperpolarization Are Clustered and Coordinately Expressed in Alcoholic Hepatitis
作者: Kim, Adam; Saikia, Paramananda; Nagy, Laura E.
通讯作者: Nagy, Laura E.
刊名: FRONTIERS IN IMMUNOLOGY
ISSN: 1664-3224
出版年: 2019
卷: 10
语种: 英语
英文关键词: alcoholic hepatitis ; alcoholic liver disease ; kupffer cells ; macrophage ; monocyte ; peripheral blood mononuclear cells ; miRNA expression ; small RNA sequencing
WOS关键词: NATURAL ANTISENSE TRANSCRIPT ; KUPFFER CELLS ; LIVER-DISEASE ; MACROPHAGE POLARIZATION ; GENE-EXPRESSION ; TLR4 PATHWAY ; ACTIVATION ; MICRORNAS ; PATTERNS ; MIR-155
WOS学科分类: Immunology
WOS研究方向: Immunology
英文摘要:

The innate immune system, including monocytes/macrophages, is critical to the progression of alcoholic liver disease (ALD). In response to chronic ethanol, Kupffer cells, the resident macrophage of livers, and peripheral monocytes become sensitized to bacterial lipopolysaccharides (LPS), express more pro-inflammatory cytokines and exhibit macrophage M1/M2 hyperpolarization. Since miRNAs play an important role in the regulation of M1/M2 polarization, we hypothesized that miRNAs regulating macrophage polarization would be dysregulated after chronic ethanol consumption. miRNA sequencing data from Kupffer cells isolated from rats fed an ethanol diet vs. control diet and qPCR data from PBMCs isolated from alcoholic hepatitis (AH) patients and healthy controls were used to assess the role of miRNAs in macrophage hyperpolarization in ALD. Differential expression analyses revealed 40 misregulated miRNAs in Kupffer cells from the chronic ethanol-fed rats compared to pair-fed controls. Nine of these miRNAs are known to be associated with macrophage polarization and consist of a mixture of Ml- and M2-associated miRNAs, indicative of hyperpolarization. Twenty-three of the 40 differentially expressed miRNAs were localized to miRNA clusters throughout the genome. Correlation analyses revealed that miRNAs in three of these clusters were co-regulated and located within antisense non-coding RNAs. Similar to Kupffer cells from ethanol-fed rats, M1 and M2 polarization markers, as well as sensitivity to LPS, were elevated in PBMCs from AH patients compared to healthy controls. These increases were associated with an up-regulation of polarization-associated miRNAs, including miR-125a-5p, a miRNA associated with hyperpolarization. miR-125a-5p is clustered in the genome with other miRNAs inside a host gene, Spaca6, which was also upregulated in PBMCs, as well as isolated monocytes, from AH patients. Finally, correlation analyses revealed co-regulation of human polarization-associated miRNA clusters. While expression of polarization-associated miRNAs in clusters was upregulated in AH compared to healthy controls, co-regulation of the miRNAs within a cluster was independent of disease state. Together, these results reveal that global changes in miRNA regulation are associated with polarization phenotypes in Kupffer cells from rat after chronic ethanol as well as in PBMCs from patients with AH. Importantly, polarization-associated miRNAs were localized to coordinately regulated clusters.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/140209
Appears in Collections:过去全球变化的重建

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作者单位: Cleveland Clin, Lerner Res Inst, Ctr Liver Dis Res, Dept Inflammat & Immun,Northern Ohio Alcohol Ctr, Cleveland, OH 44106 USA

Recommended Citation:
Kim, Adam,Saikia, Paramananda,Nagy, Laura E.. miRNAs Involved in M1/M2 Hyperpolarization Are Clustered and Coordinately Expressed in Alcoholic Hepatitis[J]. FRONTIERS IN IMMUNOLOGY,2019-01-01,10
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