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RNA-seq of miR-CLIP double purified, miR-124/miR-132 miR-CLIP probe treated HEK293T cells and corresponding mock treated and intermediate samples

ABSTRACT: RNA-seq of miR-CLIP double purified, miR-124/miR-132 miR-CLIP probe treated HEK293T cells and corresponding mock treated and intermediate samples

PROVIDER: PRJEB35442 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR3668270.fastq.gz	Fastqsanger.gz
	ERR3668280.fastq.gz	Fastqsanger.gz
	ERR3668290.fastq.gz	Fastqsanger.gz
	ERR3668271.fastq.gz	Fastqsanger.gz
	ERR3668281.fastq.gz	Fastqsanger.gz

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RNA-seq of miR-CLIP double purified, miR-124/miR-132 miR-CLIP probe treated HEK293T cells and corresponding mock treated and intermediate samples

Project description:Targetome of miR-124/miR-132 was enriched in HEK293T cells, a cell line which lacks the expression of these miRNA. The targetome was captured using miR-CLIP, a transfection-based double-purification crosslinking and immunoprecipitation (CLIP) method. Therefore HEK293T cells were transfected with miR-124/miR-132 miR-CLIP probes, which are trioxsalen, biotin bis-modified pre-miRNAs. Unspecific RNA-protein and trioxsalen mediated RNA-RNA crosslinking were induced by UV-irradiation before cell lysis. Total RNA (input samples) was enriched for AGO2-bound RNA using AGO2 immunoprecipitation, by depleting non-RISC associated RNAs. A second enrichment for specific targets of the transfected miRNA is performed using magnetic streptavidin-beads. This step relies on the interaction of the biotinylated probe, on which the RNA target is crosslinked, with the beads. The method was shown to deliver high-quality miRNA targetomes of both 5p and 3p miRNAs.

2020-11-23 | E-MTAB-8517 | biostudies-arrayexpress

Therapeutic miR-132 inhibition reverses heart failure

Project description:Despite some success of pharmacotherapies targeting primarily neurohormonal dysregulation, heart failure is a growing global pandemic with increasing burden. Treatments that improve the disease by reversing heart failure at the cardiomyocyte level are lacking. MicroRNAs (miRNA) are transcriptional regulators of gene expression, acting through complex biological networks, and playing thereby essential roles in disease progression. Adverse structural remodelling of the left ventricle due to myocardial infarction (MI) is a common pathological feature leading to heart failure. We previously demonstrated increased cardiomyocyte expression of the miR-212/132 family during pathological cardiac conditions. Transgenic mice overexpressing the miR-212/132 cluster (miR-212/132-TG) develop pathological cardiac remodelling and die prematurely from progressive HF. Using both knockout and antisense strategies, we have shown miR-132 to be both necessary and sufficient to drive the pathological growth of cardiomyocytes in a murine model of left ventricular pressure overload. Based on the findings, we proposed that miR-132 may serve as a therapeutic target in heart failure therapy. Here we provide novel mechanistic insight and translational evidence for the therapeutic efficacy in small and large animal models (n=135) of heart failure. We demonstrate strong PK/PD relationship, dose-dependent efficacy and high clinical potential of a novel optimized synthetic locked nucleic acid phosphorothioate backbone antisense oligonucleotide inhibitor of miR-132 (antimiR-132) as a next-generation heart failure therapeutic.

2020-01-09 | PXD015337 | Pride

A global transcriptome analysis of skin wounds of diabetic mice (db/db) treated with miR-132 or control mimics

Project description:MiR-132 is one of the most upregulated miRNAs in human skin wounds at the inflammatory phase of healing. MiR-132 inhibits inflammation but promotes growth of epidermal keratinocytes, indicating that it may facilitate the inflammatory-proliferative phase transition during wound repair. Following this line of research, here we evaluated the therapeutic potential of miR-132 in chronic wound using mouse in vivo wound model. We performed a global transcriptome analysis of skin wounds of leptin receptor-deficient (db/db) mice treated with miR-132 or control mimics. Db/db mouse has been used as a type 2 diabetic model with impaired wound healing capacity.

2017-02-01 | GSE92409 | GEO

Impact of miR-132 and miR-381 on endogenous forskolin responsive CREB targets in HEK293T cells

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microRNA-132 regulates gene expression programs involved in microglial homeostasis

Project description:microRNA-132 (miR-132), a known neuronal regulator, is one of the most robustly downregulated microRNAs (miRNAs) in the brain of Alzheimer’s disease (AD) patients. Increasing miR-132 in AD mouse brain ameliorates amyloid and Tau pathologies, and also restores adult hippocampal neurogenesis and memory deficits. However, the functional pleiotropy of miRNAs requires in-depth analysis of the effects of miR-132 supplementation before it can be moved forward for AD therapy. We employ here miR-132 loss- and gain-of-function approaches using single-cell transcriptomics, proteomics and in silico AGO-CLIP datasets to identify molecular pathways targeted by miR-132 in mouse hippocampus. We find that miR-132 modulation significantly affects the transition of microglia from a disease-associated to a homeostatic cell state. We confirm the regulatory role of miR-132 in shifting microglial cell states using human microglial cultures derived from induced pluripotent stem cells.

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Effect of HIC1 and miR-212/132 expression on MCF7 cells

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2014-07-29 | E-GEOD-37945 | biostudies-arrayexpress

Targets of miR-212/132 in doxorubicin-induced cardiotoxicity

Project description:We overexpressed miR-212/132 by AAV9 in mouse model of doxorubicin-induced cardiotoxicity and wanted to identify myocardial targets of miR-212/132 in this model.

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miR-132 mediates renal fibrosis: Genome-wide analysis of gene expression in foxd1-derivative interstital cells derived from fibrotic kidneys from mice treated with antagomir-132 or scramblemir

Project description:Chronic kidney disease is associated with progressive renal fibrosis, where perivascular cells give rise to the majority of α-SMA positive myofibroblasts. We sought to identify pericytic miRNAs that could serve as a target to decrease myofibroblast formation. We induced kidney fibrosis in FoxD1-GC;Z/Red-mice by unilateral ureteral obstruction (UUO) followed by FACS sorting of dsRed-positive FoxD1-derivative cells and miRNA profiling. MiR-132 selectively increased 21-fold during pericyte-to-myofibroblast formation whereas miR-132 was only 2.5-fold up in total kidney lysates (both in UUO and ischemia-reperfusion injury). MiR-132 silencing in UUO decreased collagen deposition (35%) and tubular apoptosis. Immunohistochemistry, western blot and qRT-PCR confirmed a similar decrease in interstitial α-SMA+ cells. Pathway analysis identified a rate-limiting role for miR-132 in myofibroblast proliferation that was confirmed in vitro. Indeed, antagomir-132 treated mice displayed a reduction in the number of proliferating, ki67+ interstitial myofibroblasts. Interestingly, this was selective for the interstitial compartment and did not impair the reparative proliferation of tubular epithelial cells, as evidenced by an increase in ki67+ epithelial cells, as well as increased (p-)RB1, Cyclin-A and decreased RASA1, p21 levels in kidney lysates. Taken together, silencing miR-132 counteracts the progression of renal fibrosis by selectively decreasing myofibroblast proliferation and could potentially serve as a novel antifibrotic therapy.

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RNA-seq of HEK293T total RNA treated with 40 nM pre-miR-124/pre-miR-132 against mock treated control samples

Project description:The expression of different RNAs in miR-124/miR-132 transfected HEK293T cells were compared to mock treated samples in order to describe fold change of transcripts assigned as miRNA targets by different tools or experiments.

2020-11-23 | E-MTAB-8516 | biostudies-arrayexpress

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