Project description:As the fetal heart develops, cardiomyocyte proliferation potential decreases while fatty acid oxidative capacity increases, a highly regulated transition known as cardiac maturation. Small noncoding RNAs, such as microRNAs (miRNAs), contribute to the establishment and control of tissue-specific transcriptional programs. However, small RNA expression dynamics and genome wide miRNA regulatory networks controlling maturation of the human fetal heart remain poorly understood. Transcriptome profiling of small RNAs revealed the temporal expression patterns of miRNA, piRNA, circRNA, snoRNA, snRNA and tRNA in the developing human heart between 8 and 19 weeks of gestation. Our analysis revealed that miRNAs were the most dynamically expressed small RNA species throughout mid-gestation. Cross-referencing differentially expressed miRNAs and mRNAs predicted 6,200 mRNA targets, 2134 of which were upregulated and 4066 downregulated as gestation progresses. Moreover, we found that downregulated targets of upregulated miRNAs predominantly control cell cycle progression, while upregulated targets of downregulated miRNAs are linked to energy sensing and oxidative metabolism. Furthermore, integration of miRNA and mRNA profiles with proteomes and reporter metabolites revealed that proteins encoded in mRNA targets, and their associated metabolites, mediate fatty acid oxidation and are enriched as the heart develops.This study revealed the small RNAome of the maturing human fetal heart. Furthermore, our findings suggest that coordinated activation and repression of miRNA expression throughout mid-gestation is essential to establish a dynamic miRNA-mRNA-protein network that decreases cardiomyocyte proliferation potential while increasing the oxidative capacity of the maturing human fetal heart.
Project description:To explore possible oncogenic factors in OS, we used a microarray-based approach to profile changes in the expression of miRNAs in five OS cell lines and human mesenchymal stem cells (hMSCs). We used a microarray-based approach to profile in the miRNA expression of OS
Project description:Sexual dimorphisms are well recognized in various cardiac diseases, including myocardial infarction (MI). MI develops later in women, but once established, it contributes more persistent symptoms and higher mortality than in men. Although mRNA-level sexual dimorphism of MI have been reported, whether miRNA transcriptome also confers such dimorphism remains unknown. Comprehensive understanding of the mRNA- and miRNA-level genetic programs underlying the heart sexual dimorphisms will expectedly improve clinical outcome by facilitating the development of gender specific treatment strategies. Here, by conducting miRNA microarray analysis of human MI samples, we set out to characterize the heart sexual dimorphisms at the level of miRNA transcriptome
Project description:Affymetrix whole genome gene (mRNA) and miRNA expression data during the development period (from E10.5 to E19.5) and expression data of adult (10 weeks old mice) as well as old (14 months old mice) murine heart tissues For a more comprehensive understanding of the potential effects of miRNA for heart development, we carried out the first study of time-resolved parallel profiling of mRNA and miRNA levels in the developing murine heart and identify the dynamical activation or repression of numerous biological processes and signalling pathways
Project description:Objective: Potential regulators of adipogenesis include microRNAs (miRNAs), small non-coding RNAs that have been recently shown related to adiposity and differentially expressed in fat depots. However, to date no study is available regarding the relationship of miRNAs expression profile, biological pathway and cellular phenotype during human adipogenesis. Thereby, the aim of this study was to investigate whether miRNA expression profile in human adipocytes is related to adipogenesis and to test whether miRNA profile in human subcutaneous adipose tissue is associated to human obesity and co-morbidities. Keywords: miRNA expression
Project description:Purpose: To identify miRNA expresssion profiles in E9.5 mouse embryonic heart Methods: Total RNA of E9.5 heart were extracted with TRIZOL, miRNA deep sequencing were performed in using Illumina Hiseq 2500, SE50 (RIBOBIO, http://www.ribobio.com/), producing over 10 million reads from each sample. Clean reads were mapped to mouse genome (mm9), using miRDeep2 Results: MiRNAs that were highly expressed in E9.5 embryonic heart were identified Conclusions: Results provide insight into the role of miRNAs function in E9.5 embryonic heart development
Project description:Identification of microRNAs differentially expressed between the neonatal heart of a genetic rat model of cardiac hypertrophy (the Hypertrophic Heart Rat, HHR) and the control (the Normal Heart Rat, NHR) using the Agilent Rat miRNA Microarray Kit Release 16.0.