MiR-199a regulates human mammary epthelial cell function
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE85629 | GEO | 2017/05/05
SECONDARY ACCESSION(S): PRJNA339444
REPOSITORIES: GEO
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Project description:Background: Hypertrophic cardiomyopathy (HCM) is an autosomal dominant genetic disorder, characterized by cardiomyocyte hypertrophy, cardiomyocyte disarray and fibrosis, which has a prevalence of ~1:200-500 and predisposes individuals to sudden death and heart failure. The mechanisms through which diverse HCM-causing mutations cause cardiac dysfunction remain mostly unknown and their identification may reveal new therapeutic avenues. MicroRNAs have emerged as critical regulators of gene expression and disease phenotype in various pathologies. We explored whether miRNAs could play a role in HCM pathogenesis and offer potential therapeutic targets. Methods and Results: Using high-throughput miRNA expression profiling and qPCR analysis in two distinct mouse models of HCM, we found that miR-199a-3p expression levels are upregulated in mutant mice compared to age- and treatment-matched wild-type mice. We also found that miR-199a-3p expression is enriched in cardiac non-myocytes compared to cardiomyocytes. When we expressed miR-199a-3p mimic in cultured primary cardiac non-myocytes and analyzed the conditioned media by proteomics, we found that several ECM proteins (e.g., TSP2, FBLN3, COL11A1, LYOX) were differentially expressed. We confirmed our proteomics findings by qPCR analysis of selected mRNAs and demonstrated that miR-199a-3p mimic expression in cardiac non-myocytes drives upregulation of ECM genes including Tsp2, Fbln3, Pcoc1, Col1a1 and Col3a1. To examine the role of miR-199a-3p in vivo, we inhibited its function using lock-nucleic acid (LNA)-based inhibitors (antimiR-199a-3p) in an HCM mouse model. Our results revealed that progression of cardiac fibrosis is attenuated when miR-199a-3p function is inhibited in mild-to-moderate HCM. Finally, guided by computational target prediction algorithms, we identified mRNAs Cd151 and Itga3 as direct targets of miR-199a-3p and have shown that miR-199a-3p mimic expression negatively regulates AKT activation in cardiac non-myocytes. Conclusions: Altogether, our results suggest that miR-199a-3p may contribute to cardiac fibrosis in HCM through its actions in cardiac non-myocytes. Thus, inhibition of miR-199a-3p in mild-to-moderate HCM may offer therapeutic benefit in combination with complementary approaches that target the primary defect in cardiac myocytes.
2024-01-26 | PXD042904 | Pride
Project description:Idiopathic pulmonary fibrosis (IPF) is a chronic and often fatal pulmonary disorder characterized by fibroblast proliferation and the excess deposit of extracellular matrix proteins. The etiology of IPF is unknown, but a central role for microRNAs (miRNAs), a class of small non-coding regulatory RNAs, has been recently suggested. We report the upregulation of miR-199a-5p in mouse lungs undergoing bleomycin-induced fibrosis and also in human biopsies from IPF patients. Levels of miR-199a-5p were increased selectively in myofibroblasts and putative profibrotic effects of miR-199a-5p were further investigated in cultured lung fibroblasts. MiR-199a-5p expression was induced upon TGFβ exposure and ectopic expression of miR-199a-5p was sufficient to promote the pathogenic activation of pulmonary fibroblasts. CAV1, a critical mediator of pulmonary fibrosis, was established as a bona fide target of miR-199a-5p. Finally, we also found an aberrant expression of miR-199a-5p in mouse models of kidney and liver fibrosis, suggesting that dysregulation of miR-199a-5p represents a general mechanism contributing to the fibrotic process. We propose miR-199a-5p as a major regulator of fibrosis that represents a potential therapeutic target to treat fibroproliferative diseases. This SuperSeries is composed of the SubSeries listed below. Refer to individual Series
2013-02-01 | E-GEOD-34818 | biostudies-arrayexpress
Project description:Idiopathic pulmonary fibrosis (IPF) is a chronic and often fatal pulmonary disorder characterized by fibroblast proliferation and the excess deposit of extracellular matrix proteins. The etiology of IPF is unknown, but a central role for microRNAs (miRNAs), a class of small non-coding regulatory RNAs, has been recently suggested. We report the upregulation of miR-199a-5p in mouse lungs undergoing bleomycin-induced fibrosis and also in human biopsies from IPF patients. Levels of miR-199a-5p were increased selectively in myofibroblasts and putative profibrotic effects of miR-199a-5p were further investigated in cultured lung fibroblasts. MiR-199a-5p expression was induced upon TGFβ exposure and ectopic expression of miR-199a-5p was sufficient to promote the pathogenic activation of pulmonary fibroblasts. CAV1, a critical mediator of pulmonary fibrosis, was established as a bona fide target of miR-199a-5p. Finally, we also found an aberrant expression of miR-199a-5p in mouse models of kidney and liver fibrosis, suggesting that dysregulation of miR-199a-5p represents a general mechanism contributing to the fibrotic process. We propose miR-199a-5p as a major regulator of fibrosis that represents a potential therapeutic target to treat fibroproliferative diseases. This SuperSeries is composed of the SubSeries listed below.
2013-02-01 | GSE34818 | GEO
Project description:Whole transcriptome Identification of direct targets of miR-199a-5p and miR-424-3p using biotinylated pull-downs found that both miRNAs are likely to have a role in the cell cycle. HEK293T cells were transfected with biotinylated miRNAs (either miR-199a-5p or miR-424-3p). The miRNAs and target mRNA were pulled down with streptavidin and compared to the input control.
2013-12-02 | E-GEOD-40406 | biostudies-arrayexpress
Project description:Pathological markers that can monitor the progression of gastric cancer (GC) may facilitate the diagnosis and treatment of patients with diffuse GC (DGC). To identify microRNAs (miRNAs) that can differentiate between early and advanced DGC in the gastric mucosa, miRNA expression profiling was performed using the NanoString nCounter method in human DGC tumors. Ectopic expression of miR-199a and miR-199b (miR-199a/b) in SNU601 human GC cells accelerated the growth rate, viability, and motility of cancer cells and increased the tumor volume and weight in a mouse xenograft model. To study their clinicopathological roles in patients with GC, miR-199a/b levels were measured in human GC tumor samples using in situ hybridization. High miR-199a/b expression level was associated with enhanced lymphovascular invasion, advanced T stage, and lymph-node metastasis. Using the 3′-untranslated region (UTR) luciferase assay, Frizzled-6 (FZD6) was confirmed to be a direct target of miR-199a/b in GC cells. siRNA-mediated depletion of FZD6 enhanced the motility of SNU601 cells, and addback of FZD6 restored cancer cell motility stimulated by miR-199a/b. In conclusion, miR-199a/b promotes DGC progression by targeting FZD6, implying that miR-199a/b can be used as prognostic and diagnostic biomarkers for the disease.
2023-10-26 | GSE227288 | GEO
Project description:We found that miR-199a-3p expression is decreased in cSCC biopsies and cell lines compared to normal skin biopsies or normal keratinocytes cell. To understand the role lost expression of miR-199a-3p might have in tumorigenesis of keratinocytes, we aimed to fine possible biochemical pathways and possible targets of miR-199a-3p in cSCC. In order do so, we overexpressed miR-199a-3p in cSCC and used microarrays to find global gene expression affected by miR-199a-3p.
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Project description:To identify the genes targeted by miR-199a-3p in metastatic melanoma cells, we compared global gene expression in miR-199a-3p vs control miR transiently transfected cells by transcriptomic microarrays.
2019-06-10 | GSE123597 | GEO
Project description:MicroRNAs (miRNAs) are important regulators in the process of cardiac hypertrophy and heart failure. Previous studies showed that miR-199a is upregulated in pressure-overload cardiac hypertrophy and overexpression of miR-199a induces cardiac hypertrophy in vivo. However, the therapeutic role of anti-miR-199a treatment in cardiac hypertrophy is of little known. Here, we showed a novel and effective way to treat mice cardiac hypertrophy and restored cardiac function through injection of adeno-associated virus (AAV) which expressed anti-miR-199a tough decoys (TuDs). We performed the RNA-seq profiling in both AAV9-EGFP control and AAV9-anti-miR-199a TuDs injected cardiac hypertrophic mice. The transcriptome analysis indicates that genes related to cytoplasmic translation, mitochondrial respiratory chain complex assembly were upregulated by anti-miR-199a treated recovered hearts.
2020-12-31 | GSE155545 | GEO
Project description:To clarify the role of miR-199a-3p in HCC, we carried out a gene expression microarray analysis using HCC cell lines (HLE and HLF) transfected with a miR-199a-3p mimic or a negative control. We found that 819 genes were downregulated (>2-fold) by miR-199a-3p in both cell lines.
2018-09-23 | GSE110216 | GEO
Project description:Whole transcriptome Identification of direct targets of miR-199a-5p and miR-424-3p using biotinylated pull-downs found that both miRNAs are likely to have a role in the cell cycle.
2013-12-02 | GSE40406 | GEO