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Single cell RNA transcriptome analysis of Epicardial Derived Cells in the Desmoplakin haplo-insufficient Arrhythmogenic Cardiomyopathy mouse

ABSTRACT: Single cell RNA transcriptome analysis of Epicardial Derived Cells in the Desmoplakin haplo-insufficient Arrhythmogenic Cardiomyopathy mouse

PROVIDER: PRJNA634559 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11832973_1.fastq.gz	Fastqsanger.gz
	SRR11832973_2.fastq.gz	Fastqsanger.gz
	SRR11832974_1.fastq.gz	Fastqsanger.gz
	SRR11832974_2.fastq.gz	Fastqsanger.gz
	SRR11832975_1.fastq.gz	Fastqsanger.gz

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Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy [scRNA-seq]

Project description:We performed single cell RNA sequencing (scRNAseq) on epicardial cells generated from human induced pluripotent stem cells (hiPSCs) of an arrhythmogenic cardiomyopathy patient and their PKP2 reverted isogenic control. The goal of this experiment was to analyze the process of epicardial to fibro-fatty celluar differentiation in diseased cells and compare the cellular transcirptomes of diseased and healthy cells.

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Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy [bulk RNA-seq]

Project description:We performed bulk cell RNA sequencing (RNAseq) on epicardial cells generated from human induced pluripotent stem cells (hiPSCs) of an arrhythmogenic cardiomyopathy patient and their PKP2 reverted isogenic control. The goal of this experiment was to compare the transcriptomes of diseased and healthy cells.

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Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy

Project description:Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy

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Exercise Reverses Dysregulated Gene Expression in a Desmoplakin Haplo-insufficient Mouse Model of Arrhythmogenic Cardiomyopathy

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Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy [scRNA-seq]

Project description:Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy [scRNA-seq]

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Single cell RNA transcriptome analysis of Epicardial Derived Cells in the Desmoplakin haplo-insufficient Arrhythmogenic Cardiomyopathy mouse

Project description:To delineate the role of the epicardium, the initial site of presentation of the ACM phenotype, the Dsp gene, encoding desmosome protein desmoplakin (DSP) was conditionally deleted in the mouse epicardial cells under the transcriptional regulation of Wilms tumor 1 (Wt1) locus. Single cell RNA sequencing (scRNA-Seq) of ~ 40,000 tagged epicardial-derived cells (EDCs), isolated using the dual reporter R26mT/mG mice, showed an increased number of EDCs expressing unique molecular identifiers of fibroblasts as well as a unique subset of epicardial-derived fibroblasts expressing pro-fibrotic genes in the Wt1-Cre: R26mT/mG: Dsp mice. Analysis of pseudo-bulk RNA-Seq data identified ~ 800 differentially expressed genes (DEGs), which were predominantly involved in epithelial-mesenchymal transition (EMT). The DEGs were the targets of TGFB1 among other trophic/mitotic factors, whose activation was verified by immunohistochemistry and quantification of transcript levels of selected TGBF1 pathway genes. Retro-mapping of the DEGs to the cell clusters, identified by scRNA-Seq, denoted epicardial-derived fibroblasts and to a lesser extent the epithelial cells as the main sources of paracrine factors in the myocardium of Wt1-Cre: R26mT/mG: Dsp mice.

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Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy [bulk RNA-seq]

Project description:Epicardial Differentiation Drives Fibro-fatty Remodeling in Arrhythmogenic Cardiomyopathy [bulk RNA-seq]

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Unravelling Role of miRNA-mRNA Interactome in Pathophysiology of Arrhythmogenic Cardiomyopathy [mRNA-seq]

Project description:Arrhythmogenic cardiomyopathy is an inherited entity characterized by irregular cell-cell adhesion, cardiomyocyte death, fibro-fatty replacement of ventricular myocytes, leading to malignant ventricular arrythmias, contractile dysfunction and sudden cardiac death. Pathogenic variants in genes that encode desmosome are the predominant cause of arrhythmogenic cardiomyopathy. Moreover, signalling pathways such as Wnt/ß-catenin and transforming growth factor-β have been involved in the disease progression. However, still little is known about the molecular pathophysiological mechanisms that underlie arrhythmogenic cardiomyopathy pathogenesis. We used mRNA and small RNA sequencing to analyse the transcriptome of health and arrhythmogenic cardiomyopathy autopsied human hearts. Our results showed 697 differentially expressed genes, and eight differentially expressed miRNAs. Functional enrichment revealed mitochondrial respiratory-related pathways, impaired response to oxidative stress, apoptotic signalling pathway, inflammatory response-related and extracellular matrix response pathways. Furthermore, analysis of miRNA-mRNA interactome identified eleven negatively correlated miRNA-target pairs for arrhythmogenic cardiomyopathy. Our finding revealed novel arrhythmogenic cardiomyopathy-related miRNAs with important regulatory function in disease pathogenesis highlighting their value as potential key targets for therapeutic approaches.

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Project description:Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiomyopathy primarily of the right ventricle characterized through fibrofatty replacement of cardiomyocytes. The genetic etiology in ARVC patients is most commonly caused by dominant inheritance and high genetic heterogeneity. Though histological examinations of ARVC affected human myocardium reveals fibrolipomatous replacement, the molecular mechanisms leading to loss of cardiomyocytes are largely unknown. We therefore analyzed the transcriptomes of 6 ARVC specimen derived from heart transplantation candidates and compared our findings to 6 non-failing donor hearts (NF) which could not be transplanted for technical reasons. In addition, we compared our findings to 7 hearts from patients with idiopathic dilated cardiomyopathy. From each heart left (LV) and right ventricular (RV) myocardial samples were analyzed by Affymetrix HG-U133 Plus 2.0 arrays, adding up to six sample groups. Unsupervised cluster analyses of the six sample groups revealed a clear separation of NF and cardiomyopathy samples. However, in contrast to the other samples, unsupervised cluster analyses revealed no distinct expression pattern in LV and RV samples from ARVC-hearts. We further identified differentially expressed transcripts using t-tests and found transcripts separating diseased and NF ventricular myocardium. Of note, in failing myocardium only about 15-16% of the genes are commonly regulated compared to NF samples. In addition both cardiomyopathies are clearly distinct on the transcriptome level. Comparison of the expression patterns between the failing RV and LV using a paired t-test revealed a lack of major differences between LV and RV gene expression in ARVC hearts. Microarrays were used to elucidate the differences between non-failing control hearts and those, suffering from arrhythmogenic right ventricular cardiomyopathy (ARVC).

2011-11-30 | E-GEOD-29819 | biostudies-arrayexpress

Pericardial fluid microRNAs in patients with arrhythmogenic right ventricular cardiomyopathy or ischemic heart disease

Project description:Pericardial fluid is enriched by biologically active molecules of cardiovascular origin including microRNAs. Investigation of the disease-specific extracellular microRNAs could shed light on the molecular processes underlying disease development. Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited heart disease characterized by life-threatening arrhythmias and progressive heart failure development. The current data about the association between microRNAs and ARVC development are limited. We performed small RNA sequence analysis of microRNAs of pericardial fluid samples obtained during transcutaneous epicardial access for ventricular tachycardia (VT) ablation of six patients with definite ARVC and three post-infarction VT patients. Disease-associated microRNAs of pericardial fluid were identified. Enrichment analysis of differentially expressed microRNAs revealed their close linkage to cardiac diseases.

2021-03-09 | GSE164490 | GEO

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