RNA-seq transcriptome profiling and whole exome sequencing data on Hypertrophic cardiomyopathy (HCM) patients
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE160997 | GEO | 2021/01/09
REPOSITORIES: GEO
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Project description:RNA-seq transcriptome profiling and whole exome sequencing data on Hypertrophic cardiomyopathy (HCM) patients
| PRJNA675090 | ENA
Project description:Approximately 1426 lncRNAs (965 up-regulated and 461 down-regulated) and 1715 mRNAs (896 up-regulated and 819 down-regulated) were aberrantly expressed in HCM patients with fold change > 2.0 Myocardial tissues were obtained from 7 HCM patients and 5 disease-free individuals, and lncRNA and mRNA expression profiles were analyzed using the CapitalBio Human LncRNA Microarray v2.0.
2015-05-08 | E-GEOD-68316 | biostudies-arrayexpress
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:Hypertrophic cardiomyopathy (HCM) is a complex disease partly explained by the effects of individual gene variants on sarcomeric protein biomechanics. At the cellular level, HCM mutations most commonly enhance force production, leading to higher energy demands. Despite significant advances in elucidating sarcomeric structure-function relationships, there is still much to be learned about the mechanisms that link altered cardiac energetics to HCM phenotypes. In this work, we test the hypothesis that changes in cardiac energetics represent a common pathophysiologic pathway in HCM. We performed a comprehensive multi-omics profile of the molecular (transcripts, metabolites, and complex lipids), ultrastructural, and functional components of HCM energetics using myocardial samples from 27 HCM patients and 13 normal controls (donor hearts). Integrated omics analysis revealed alterations in a wide array of biochemical pathways with major dysregulation in fatty acid metabolism, reduction of acylcarnitines, and accumulation of free fatty acids. HCM hearts showed evidence of global energetic decompensation manifested by a decrease in high energy phosphate metabolites (ATP, ADP, and phosphocreatine) and a reduction in mitochondrial genes involved in the creatine kinase and ATP synthesis. Accompanying these metabolic derangements, quantitative electron microscopy showed an increased fraction of severely damaged mitochondria with reduced cristae density, coinciding with reduced citrate synthase (CS) activity and mitochondrial oxidative respiration. These mitochondrial abnormalities were associated with elevated reactive oxygen species (ROS) and reduced antioxidant defenses. However, despite significant mitochondrial injury, HCM hearts failed to upregulate mitophagic clearance. Overall, our findings suggest that perturbed metabolic signaling and mitochondrial dysfunction are common pathogenic mechanisms in patients with HCM. These results highlight potential new drug targets for attenuation of the clinical disease through improving metabolic function and reducing mitochondrial injury.
2022-07-17 | GSE180313 | GEO
Project description:To investigate HCM mutation-associated molecular details at the early stage of disease development, we performed bulk RNA-seq analysis at Day 15 of differentiation using RNA isolated from the isogenic control and mutant hiPSC-CMs. We performed pair-end sequencing with >30 million reads per sample with clean read counts of more than 96% for each sample.
2022-07-06 | GSE198258 | GEO
Project description:Hypertrophic cardiomyopathy (HCM) is the most common inherited myocardial disease with significant genetic and phenotypic heterogeneity. To search for novel biomarkers, which could increase the accuracy of HCM diagnosis and possibly improve understanding of its phenotype formation, we analyzed the levels of circulating microRNAs (miRNAs) − stable non-coding regulatory RNAs. Performed high throughput sequencing of miRNAs in plasma of HCM patients and controls pinpointed miR-499a-5p as one of 35 miRNAs dysregulated in HCM.
2022-01-29 | GSE195436 | GEO
Project description:Hypertrophic cardiomyopathy (HCM) is the most common inherited heart disease, and its pathogenesis is still being intensively studied to explain the reasons of significant genetic and phenotypic heterogeneity of the disease. To search for possible HCM modifier genes involved in the HCM development we first attempted to analyze gene expression profile coupled with DNA methylation profile in the hypertrophied myocardium of HCM patients; the control group consisted of patients with aortic stenosis. The transcriptome analysis identified significant differences in levels of 193 genes, most of which were underexpressed in HCM. The methylome analysis revealed 1755 nominally significant differentially methylated positions (DMPs), mostly hypomethylated in HCM. The clear differences in DNA methylation profiles between the studied groups indicate the involvement of this process in the formation of primary left ventricle hypertrophy in HCM. Based on gene ontology enrichment analysis, the majority of biological processes, overrepresented by both differentially expressed genes (DEGs) and DMP-containing genes, are involved in the regulation of locomotion and muscle structure development. The intersection of 193 DEGs and 978 DMP-containing genes pinpointed eight genes, expression of which differed between studied groups and correlated with methylation levels of the neighboring DMPs. Half of these genes (AUTS2, GIGYF1, PRRT1, and SLC17A7) were found underexpressed in HCM and involved in neurogenesis and synapse functioning. Our data suggesting the possible involvement of innervation-associated genes in HCM provide additional insights in the disease pathogenesis and expand the field of further research.
2022-12-14 | GSE207095 | GEO
Project description:Hypertrophic cardiomyopathy (HCM) is the most common inherited heart disease, and its pathogenesis is still being intensively studied to explain the reasons of significant genetic and phenotypic heterogeneity of the disease. To search for possible HCM modifier genes involved in the HCM development we first attempted to analyze gene expression profile coupled with DNA methylation profile in the hypertrophied myocardium of HCM patients; the control group consisted of patients with aortic stenosis. The transcriptome analysis identified significant differences in levels of 193 genes, most of which were underexpressed in HCM. The methylome analysis revealed 1755 nominally significant differentially methylated positions (DMPs), mostly hypomethylated in HCM. The clear differences in DNA methylation profiles between the studied groups indicate the involvement of this process in the formation of primary left ventricle hypertrophy in HCM. Based on gene ontology enrichment analysis, the majority of biological processes, overrepresented by both differentially expressed genes (DEGs) and DMP-containing genes, are involved in the regulation of locomotion and muscle structure development. The intersection of 193 DEGs and 978 DMP-containing genes pinpointed eight genes, expression of which differed between studied groups and correlated with methylation levels of the neighboring DMPs. Half of these genes (AUTS2, GIGYF1, PRRT1, and SLC17A7) were found underexpressed in HCM and involved in neurogenesis and synapse functioning. Our data suggesting the possible involvement of innervation-associated genes in HCM provide additional insights in the disease pathogenesis and expand the field of further research.
2022-06-30 | GSE206978 | GEO
Project description:In this study, we analyze DNA whole-exome sequencing (WES) data from 3 patients with m.14487T>C mutation to detect rare candidate SNVs.
2020-05-19 | GSE131740 | GEO
Project description:Hypertrophic cardiomyopathy (HCM) is an important cause leading to heart failure. Preserving cardiac function particularly in cardiomyocytes (CMs) is essential for improving prognosis in HCM patients. Therefore, understanding single-cell transcriptome characteristics of CMs in HCM would be indispensable to investigate potential therapeutic targets. We applied single-cell tagged reverse transcription (STRT-seq) approach and obtained 338 CM transcriptomes. The human heart samples were collected from HCM patients who had extended septal myectomy and healthy donors. Our results revealed that in nonfailing HCM heart CMs could be categorized into three subsets: high energy synthesis cluster, high cellular metabolism cluster and intermediate cluster. The expression of mitochondrial and electron transport chain (ETC) was up-regulated in larger-sized CMs from high energy synthesis cluster. Of note, we found the expression of Cytochrome c oxidase subunit 7B (Cox7B), a subunit of Complex IV in ETC was positively correlated with CMs size. Further, after assessing Cox7B expression in HCM patients, we speculated that Cox7B was compensatory up-regulated at early-stage but down-regulated at end-stage of HCM. To test the hypothesis that Cox7B might play a cardioprotective role in the early-stage of HCM, we used adeno associated virus 9 (AAV9) to mediate the expression of Cox7B in pressure overload-induced mice. Mice in vivo data supported that knockdown of Cox7B would accelerate heart failure progression and Cox7B overexpression could restore partial cardiac function in hypertrophy.
2024-02-07 | GSE227734 | GEO