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MiR-146a is overexpressed and contributes to dampen IL-6 production in cystic fibrosis macrophages

ABSTRACT: miR-146a is overexpressed and contributes to dampen IL-6 production in cystic fibrosis macrophages

PROVIDER: PRJNA556192 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9734160.fastq.gz	Fastqsanger.gz
	SRR9734161.fastq.gz	Fastqsanger.gz
	SRR9734162.fastq.gz	Fastqsanger.gz
	SRR9734163.fastq.gz	Fastqsanger.gz
	SRR9734164.fastq.gz	Fastqsanger.gz

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miR-146a is overexpressed and contributes to dampen IL-6 production in cystic fibrosis macrophages

Project description:In this study, we investigated whether miRNA deregulation might underlie the functional abnormalities of cystic fibrosis (CF) macrophages. To this aim we performed miRNA profiling in macrophages from CF and non-CF macrophages. This led to the identification of a panel of differentially expressed miRNAs in CF macrophages compared to non-CF cells.

2020-04-14 | GSE134702 | GEO

miR-146a regulates many lncRNAs in RAS induced senescence [Anti-146a]

Project description:miR-146a is a known anti-inflammatory miRNA. Intringuigly, it is overexpressed in RAS-induced senescent cells which is accompanied with a rich pro-inflammatoy secretpry phenotype. We aim to study possible sponges for miR-146a.

2021-05-11 | GSE150325 | GEO

MiR-146a downregulation contributes to sunitinib-induced cardiac dysfunction

Project description:MiR-146a downregulation contributes to sunitinib-induced cardiac dysfunction

| PRJNA518091 | ENA

miR-146a regulates many lncRNAs in RAS induced senescence [miR-CLIP]

2021-05-11 | GSE150324 | GEO

miR-146a-5p contributes to inflammation-mediated β cell mitochondrial dysfunction and apoptosis

Project description:MicroRNAs (miRNAs) are small non-coding RNAs that function as modulators of gene expression. We previously showed that miR-146a-5p is upregulated in pancreatic islets treated with pro-inflammatory cytokines and in pancreatic sections from organ donors with type 1 diabetes (T1D). Other studies have associated overexpression of miR-146a-5p with β cell apoptosis and impaired insulin secretion; however, the molecular mechanisms mediating these effects remain elusive. To investigate the role of miR-146a-5p in β cell function, we developed stable MIN6 cell lines transduced with lentiviral vectors to either overexpress or inhibit the expression of miR-146a-5p. Monoclonal cell populations were treated with pro-inflammatory cytokines (IL1β, IFNg, and TNFα) to model T1D in vitro. We found that overexpression of miR-146a-5p increased the cell death of MIN6 cells under inflammatory stress, whereas inhibition of miR-146a-5p reversed these effects. Additionally, inhibition of miR-146a-5p increased mitochondrial DNA copy number, respiration rate, and ATP production, suggesting that miR-146a-5p inhibition improves mitochondrial function. In support of this finding, we also observed that miR-146a-5p is enriched in the mitochondria of MIN6 cells treated with cytokines. Consistently, bioinformatic analysis of RNA sequencing data using MIN6 stable cells showed enrichment of pathways related to insulin secretion, apoptosis, and mitochondrial function when the expression levels of miR-146a-5p were altered. Overall, the findings from our study show for the first time that miR-146a-5p upregulation during inflammatory stress may promote β cell dysfunction and death by suppressing mitochondrial function.

2024-04-10 | GSE255756 | GEO

MicroRNA-146a modulates B-cell oncogenesis by regulating EGR1

Project description:miR-146a is a NF-κB induced microRNA that serves as a feedback regulator of this critical pathway. In mice, deficiency of miR-146a results in hematolymphoid cancer at advanced ages as a consequence of constitutive NF-κB activity. In this study, we queried whether the deficiency of miR-146a contributes to B-cell oncogenesis. Combining miR-146a deficiency with transgenic expression of c-Myc led to the development of highly aggressive B-cell malignancies. Mice transgenic for c-Myc and deficient for miR-146a were characterized by significantly shortened survival, increased lymph node involvement, differential involvement of the spleen and a mature B-cell phenotype. High-throughput sequencing of the tumors revealed significant dysregulation of approximately 250 genes. Amongst these, the transcription factor Egr1 was consistently upregulated in mice deficient for miR-146a. Interestingly, transcriptional targets of Egr1 were enriched in both the high-throughput dataset and in a larger set of miR-146a-deficient tumors. miR-146a overexpression led to downregulation of Egr1 and downstream targets with concomitant decrease in cell growth. Direct targeting of the human EGR1 by miR-146a was seen by luciferase assay. Together our findings illuminate a bona fide role for miR-146a in the modulation of B-cell oncogenesis and reveal the importance of understanding microRNA function in a cell- and disease-specific context.

2016-03-20 | GSE67113 | GEO

miR-146a-5p contributes to inflammation-mediated β cell mitochondrial dysfunction and apoptosis

Project description:miR-146a-5p contributes to inflammation-mediated β cell mitochondrial dysfunction and apoptosis

| PRJNA1076462 | ENA

Data in support of Absence of miRNA-146a differentially alters microglia function and proteome

Project description:MiR-146a is an important regulator of innate inflammatory responses and is also implicated in cell death and survival. Here, we identified microglia as the main cellular source of miR-146a among mouse CNS resident cells. We further characterized the phenotype of miR-146a KO microglia cells during in vivo demyelination induced by cuprizone (CPZ) and found reduced number of CD11c+ microglia in the KO compared to WT mice. Microglia were also isolated from the brain, and the proteome was analyzed by liquid chromatography mass spectrometry.

2020-06-29 | PXD015939 | Pride

Global transcriptome profiling was performed for keratinocytes transfected with either miR-146a mimics (Pre-146a) or negative control (Pre-NC).

Project description:To find out potiential target gene of miR-146a,we have employed whole genome microarray expression profiling as a discovery platform to identify genes with the potential to target miR-146a. Human keratinocytes was transfected with either miR-146a mimics (Pre-146a) or negative control (Pre-NC) for 48h, then RNA was extracted for whole genome microarray expression profiling.

2019-02-07 | GSE126137 | GEO

Transcription profiling by array of human Jurkat T cells either over-expressing miR-146a or with miR-146a knockdown

Project description:Screening the differetial expressed genes with Jurkat-146a(miR-146a over expression),Jurkat-sponge(miR-146a knockdown),Jurkat-FF3(vector control)

2010-03-24 | E-MEXP-2627 | biostudies-arrayexpress

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