GEO DataSets

(Submitter supplied) miR-133a-3p is a highly abundant cardiomyocyte-enriched microRNA whose expression is persistently decreased in response to pressure overload (or transverse aortic constriction, TAC) in mice. Overexpression of miR-133a in cardiomyocytes of mouse hearts in vivo (under the control of the Myh6 promoter) decreases pressure overload-induced apoptosis and fibrosis. In previous studies using microarray platforms, we detected numerous mRNAs whose transcript levels were altered by either or both of miR-133a overexpression and pressure overload. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL13112

38 Samples

Download data: GTF, TXT

(Submitter supplied) Rationale: MicroRNAs play key roles in hypertrophic stress responses. miR-378(-3p) is a highly abundant, cardiomyocyte-enriched microRNA whose downregulation in pressure-overload has been suggested as detrimental to the heart. Previous studies have utilized systemic anti-miR or microRNA-encoding virus administration, and thus questions regarding the cardiomyocyte-autonomous roles of miR-378 remain. Objective: To examine whether persistent overexpression of miR-378 in cardiomyocytes alters the phenotype of the unstressed heart, whether its overexpression is beneficial or deleterious in the setting of pressure-overload, and to comprehensively identify its cardiomyocyte-specific effects on mRNA regulation. Methods and Results: Cardiac function was compared in young (10-12 week-old) mice overexpressing miR-378 in the heart under the control of the Myh6 promoter (alphaMHC-miR-378 mice), in older (40 week-old) mice and their age-matched wild-type controls. Older alphaMHC-miR-378 mice exhibited decreased fractional shortening and modest chamber dilation with an increase in cardiomyocyte length. When subjected to pressure-overload, cardiomyocyte length was increased in young alphaMHC-miR-378 mice, but fractional shortening declined precipitously over two weeks. Transcriptome profiling of wild-type and alphaMHC-miR-378 hearts in unstressed and pressure-overload conditions revealed dysregulation of several upstream metabolic and mitochondrial genes in alphaMHC-miR-378 hearts, compromising the reprogramming that occurs during early adaptation to pressure overload. Ago2 immunoprecipitation with mRNA sequencing revealed novel miR-378 cardiac mRNA targets including Akt1 and Epac2 and demonstrated the contextual nature of previously described miR-378 targeting events. Conclusions: Long-term upregulation of miR-378 levels in the heart is not innocuous and exacerbates contractile dysfunction in pressure-overload hypertrophy through numerous signaling mechanisms.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL13112

40 Samples

Download data: GTF, TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13112

111 Samples

Download data: TXT

(Submitter supplied) Purpose: Next-generation sequencing (NGS) provides for quantitation of RNA abundances and comparison of RNA abundances within tissues and cells in a manner not possible with previous microarray technologies. We have made widespread use of Illumina sequencing technologies for RNA quantitation in several publications involving mouse hearts, dating from 2010, and wish to share both high-quality raw sequencing data and data processed to quantitate mRNA abundances from wild-type mice, male and female, at a variety of ages. more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13112

39 Samples

Download data: TXT

(Submitter supplied) Purpose: Next-generation sequencing (NGS) provides for quantitation of RNA abundances and comparison of RNA abundances within tissues and cells in a manner not possible with previous microarray technologies. We have made widespread use of Illumina sequencing technologies for RNA quantitation in several publications involving mouse hearts, dating from 2010, and wish to share both high-quality raw sequencing data and data processed to quantitate mRNA abundances from wild-type mice, male and female, at a variety of ages. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

40 Samples

Download data: TXT

(Submitter supplied) Background: There is a limited capacity to repair damage in the mammalian heart after birth, which is primarily due to the inability of cardiomyocytes to proliferate after birth. This is in contrast to zebrafish and salamander, in which cardiomyocytes retain the ability to proliferate throughout life and can regenerate their heart after significant damage. Recent studies in zebrafish and rodents implicate microRNAs (miRNAs) in the regulation of genes responsible for cardiac cell cycle progression and regeneration, in particular, miR-133a, the miR-15 family, miR-199a and miR-590. more...

Organism:

Ovis aries

Type:

Non-coding RNA profiling by array

Platform:

GPL20132

12 Samples

Download data: TXT

(Submitter supplied) We deciphered Ago2:RNA interactions in post-mortem human heart tissues using crosslinking immunoprecipitation coupled with high-throughput sequencing (HITS-CLIP) to generate the first transcriptome-wide map of miR targeting events in human myocardium, detecting 4000 cardiac Ago2 binding sites across >2200 target transcripts.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

6 Samples

Download data: BED

(Submitter supplied) The role of SRF in the regulation of microRNA expression and microRNA biogenesis in cardiac hypertrophy has not been well established. In this report, we employed a distinct transgenic mouse model to study the impact of SRF on cardiac microRNA expression and microRNA biogenesis. Cardiac-specific overexpression of SRF (SRF-Tg) led to altered expression of a number of microRNAs.

Organism:

Murid gammaherpesvirus 4; Mus musculus; Rattus norvegicus; Murid betaherpesvirus 1; JC polyomavirus; Human immunodeficiency virus 1; Human gammaherpesvirus 8; Homo sapiens; Human alphaherpesvirus 1; Human betaherpesvirus 5; Betapolyomavirus hominis; human gammaherpesvirus 4; Betapolyomavirus macacae

Type:

Non-coding RNA profiling by array

Platform:

GPL7722

6 Samples

Download data: TXT

(Submitter supplied) We recently identified a subset of down-regulated miRNAs such as miR-145 and miR-133a in squamous cell carcinoma. Cell growth inhibitions occurred in miR-145 and miR-133a transfectants compared with the controls, suggesting that both miRNAs function as tumor suppressors. The aims of our expression studies were identification of these miRNAs target genes.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL4133

4 Samples

Download data: TXT

(Submitter supplied) We recently identified a subset of down-regulated miRNAs such as miR-145 and miR-133a in bladder cancer. Cell growth inhibitions occurred in miR-145 and miR-133a transfectants compared with the controls, suggesting that both miRNAs function as tumor suppressors. The aims of our expression studies were identification of these miRNAs target genes.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL4133

4 Samples

Download data: TXT

(Submitter supplied) Pathological cardiac hypertrophy was induced by pressure overload on the heart. We performed genome-wide exon array experiments with left ventricles of mice with 1 week and 4 week of transverse aortic constriction (TAC). The exon level analysis revealed widespread regulation of alternative splicing and alternative polyadenylation during hypertrophy.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6096

6 Samples

Download data: CEL

(Submitter supplied) Morphine is used to sedate critically ill infants to treat painful or stressful conditions associated with intensive care. Whether neonatal morphine exposure affects microRNA (miR) expression and thereby alters mRNA regulation is unknown. We tested the hypothesis that repeated morphine treatment in stress-exposed neonatal mice alters hippocampal mRNA and miR gene expression. C57BL/6 male mice were treated from postnatal day (P) 5 to P9 with morphine at 2 or 5 mg/kg ip bid (MS5) and then exposed to stress consisting of hypoxia (100% N2 1 min and 100% O2 5 min) followed by 2h maternal separation. more...

Organism:

Mus musculus; synthetic construct

Type:

Non-coding RNA profiling by array; Expression profiling by array

Platforms:

GPL10787 GPL14613

24 Samples

Download data: CEL, TXT

(Submitter supplied) Expression of the miR-34 family (miR-34a, -34b, -34c) is elevated in settings of heart disease, and inhibition with antimiR-34a/antimiR-34 has emerged as a promising therapeutic strategy. Under chronic cardiac disease settings, targeting the entire miR-34 family is more effective than targeting miR-34a alone. The identification of transcription factor (TF)-miRNA regulatory networks has added complexity to understanding the therapeutic potential miRNA-based therapies. more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13112

14 Samples

Download data: TXT

(Submitter supplied) We established a neuron-specific Argonaute2:GFP-RNA immunoprecipitation followed by high throughput sequencing (AGO2-RIP-seq) to analyse the regulatory role of miRNAs in mouse hippocampal neurons. Using this technique, we identified more than two thousand miRNA target genes in hippocampal neurons, regulating essential neuronal features such as axon guidance and transcription. Furthermore, we found that stable inhibition of the highly expressed miR-124 in hippocampal neurons led to significant changes in the AGO2 binding of target mRNAs, resulting in subsequent upregulation of numerous miRNA target genes. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

20 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Other; Expression profiling by array

4 related Platforms

46 Samples

Download data

(Submitter supplied) To compare total RNA levels in miR-124 and mock-transfected cells (Figure S3), 5-10 ug of total RNA from miR-124-transfected cells or mock-transfected cells or universal reference RNA (Stratagene Cat# 740000) was reverse transcribed with Superscript III (Invitrogen Cat# 18080085) in the presence of aminoallul-dUTP 5-(3-aminoallyl)-dUTP (Ambion Cat# AM8439) and natural dNTPs (GE Healthsciences Cat# US77212) with 10 ug of N9 primer (Invitrogen). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL9495 GPL9494 GPL9496

9 Samples

Download data

(Submitter supplied) Ribosome Occupancy Experiments: for these experiments Channel 1 is amplified RNA (aRNA) from mRNA unbound to any ribosomes. Channel 2 is aRNA from mRNA associated with ribosomes. Ribosome Density Experiments: for these experiments Channel 1 is amplified RNA (aRNA) from mRNA present in the light fractions of the polysome. Channel 2 is aRNA from mRNA associated with ribosomes deep in the polysome.

Organism:

Homo sapiens

Type:

Other

Platform:

GPL9497

10 Samples

Download data

(Submitter supplied) HEK293T cells were either mock or miR-124 transfected. Cells were lysed 12 hours after transfection with Trizol reagent. RNA was isolated, amplified, labeled (cy5), and comparatively hybridized with a universal reference (cy3) on HEEBO arrays in biological triplicate. In addition, each biological replicate was measured twice (#2's). Data from the technical replicates was averaged before analysis. SS=steady state Compound Based Treatment: miR-124

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL9497 GPL9494

12 Samples

Download data

(Submitter supplied) Immunoaffinity Purifications of Human Argonaute Twelve hours after transfections with mock or with miR-124, we washed each 15-cm plate once with phosphate-buffered saline (usually two plates were used per IP), then added 1 ml of 4 C lysis buffer (150 mM KCl, 25 mM Tris-HCl [pH 7.4], 5 mM Na-EDTA [pH 8.0], 0.5% Nonidet P-40, 0.5 mM DTT, 10 ul protease inhibitor cocktail [Pierce Cat# 78437], 100 U/ml SUPERaseIn [Ambion Cat# AM2694]). more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL9497

15 Samples

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(Submitter supplied) A molecular and bioinformatic pipeline permitting comprehensive analysis and quantification of myocardial miRNA and mRNA expression with next-generation sequencing was developed and the impact of enhanced PI3Kalpha signaling on the myocardial transcriptome signature of pressure overload-induced pathological hypertrophy was explored.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13112

27 Samples

Download data: TXT