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Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [Visium]

ABSTRACT: Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [Visium]

PROVIDER: PRJNA905414 | ENA |

REPOSITORIES: ENA

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Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [Visium]

Project description:Fibrosis is important pathogenesis in heart failure with preserved ejection fraction (HFpEF). We previously reported that the overexpression of cardiac transcription factors, Mef2c/Gata4/Tbx5/Hand2 (MGTH) could directly reprogram cardiac fibroblasts (CFs) into induced CMs (iCMs) and reduce fibrosis. Here we show that in vivo cardiac reprogramming generated iCMs from resident CFs, improved cardiac function, and reversed fibrosis in HFpEF model using a novel transgenic mouse system. Visium revealed spatial information on changes in gene expression in HFpEF.

2024-12-14 | GSE218759 | GEO

Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [scRNA-seq]

Project description:Fibrosis is important pathogenesis in heart failure with preserved ejection fraction (HFpEF). We previously reported that the overexpression of cardiac transcription factors, Mef2c/Gata4/Tbx5/Hand2 (MGTH) could directly reprogram cardiac fibroblasts (CFs) into induced CMs (iCMs) and reduce fibrosis. Here we show that in vivo cardiac reprogramming generated iCMs from resident CFs, improved cardiac function, and reversed fibrosis in HFpEF model using a novel transgenic mouse system. scRNA-seq of non-cardiomyocytes revealed that cardiac reprogramming suppressed fibroblastic gene expression via conversion of profibrotic profile to a quiescent state. Thus, in vivo cardiac reprogramming may be a promising approach for HFpEF.

2024-12-14 | GSE218757 | GEO

Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [RNA-seq]

Project description:Fibrosis is important pathogenesis in heart failure with preserved ejection fraction (HFpEF). We previously reported that the overexpression of cardiac transcription factors, Mef2c/Gata4/Tbx5/Hand2 (MGTH) could directly reprogram cardiac fibroblasts (CFs) into induced CMs (iCMs) and reduce fibrosis. Here we show that in vivo cardiac reprogramming generated iCMs from resident CFs, improved cardiac function, and reversed fibrosis in HFpEF model using a novel transgenic mouse system. RNA-seq revealed that the MGTH activated the cardiac program and concomitantly suppressed fibroblast and inflammatory signatures. Thus, cardiac reprogramming improves HFpEF via myocardial regeneration and anti-fibrosis.

2024-12-14 | GSE218733 | GEO

Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction

Project description:Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction

| PRJNA905408 | ENA

Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [RNA-seq]

Project description:Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [RNA-seq]

| PRJNA905370 | ENA

Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [scRNA-seq]

Project description:Cardiac reprogramming and Gata4 overexpression reduce fibrosis and improve diastolic dysfunction in heart failure with preserved ejection fraction [scRNA-seq]

| PRJNA905412 | ENA

Inhibition of miR-92a normalizes vascular gene expression and prevents diastolic dysfunction in heart failure with preserved ejection fraction

Project description:Heart failure with preserved ejection fraction (HFpEF) remains a major public health burden with increasing prevalence but only few effective therapies. Endothelial dysfunction and inflammation are identified as pathophysiological drivers of HFpEF disease progression. MicroRNAs are increasingly recognized as key regulators of these pathological processes, while antimiR-based therapies have been emerged as promising therapeutics in mice and humans. Therefore, we tested whether targeting miR-92a-3p inhibition is a promising therapeutic intervention to target HFpEF in vivo. By injection of locked nucleic acid (LNA)-based antimiR (LNA-92a) weekly, we demonstrate that inhibition of miR-92a-3p attenuates the development of diastolic dysfunction and left atrial dilation following experimental induction of HFpEF in mice. Indeed, LNA-92a depleted miR-92a-3p expression in the myocardium and peripheral blood, and derepressed predicted target genes in a cell type-specific manner. Furthermore, cell-type specific efficacy of LNA-92a treatment was assessed by single-nuclear RNA sequencing of HFpEF hearts either treated with LNA-92a or LNA-Control. Endothelial cells of LNA-92a treated mice showed normalized vascular gene expression and reduced gene signatures associated with endothelial-mesenchymal transition. Conclusion: This study demonstrates that LNA-based antimiR-92a is an effective therapeutic strategy to target diastolic dysfunction and left atrial dilation in HFpEF.

2024-11-21 | E-MTAB-14589 | biostudies-arrayexpress

Characterization of a robust mouse model for heart failure with preserved ejection fraction

Project description:Heart failure with preserved ejection fraction (HFpEF) is a clinical syndrome with multisystem organ dysfunction in which patients develop symptoms of HF as the result of high left ventricular (LV) diastolic pressure Continuous infusion of angiotensin II and phenylephrine (AngII/PE) demonstrates a strong HFpEF phenotype RNAseq data demonstrate activation of pathways leading to myocardial metabolic changes, activation of ECM deposition, microvascular rarefaction, and pressure and volume related myocardial stress

2023-06-07 | GSE221502 | GEO

Upregulated FoxO1 promotes arrhythmogenesis in mice with heart failure and preserved ejection fraction [scRNA-seq]

Project description:Myocardial fibrosis leads to cardiac dysfunction and arrhythmias in heart failure with preserved ejection fraction (HFpEF), but the underlying mechanisms remain poorly understood. Here, RNA sequencing identifies Forkhead Box1 (FoxO1) signaling as abnormal in HFpEF hearts. Genetic suppression of FoxO1 alters the intercellular communication between cardiomyocytes and fibroblasts, alleviates abnormal diastolic relaxation, and reduces arrhythmias. Targeted downregulation of FoxO1 in activated fibroblasts reduces cardiac fibrosis, blunts arrhythmogenesis and improves diastolic function in HFpEF. These results not only implicate FoxO1 in arrhythmogenesis and lusitropy but also demonstrate that pro-fibrotic cardiomyocyte-fibroblast communication can be corrected, constituting a novel therapeutic strategy for HFpEF.

2024-11-17 | GSE240403 | GEO

Upregulated FoxO1 promotes arrhythmogenesis in mice with heart failure and preserved ejection fraction [6 wks]

2024-11-17 | GSE240400 | GEO