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Effect of lincRNA-p21 knockout (KO) in ventricles 8 weeks after sham/Transverse aortic restriction (TAC) surgeries

ABSTRACT: Effect of lincRNA-p21 knockout (KO) in ventricles 8 weeks after sham/Transverse aortic restriction (TAC) surgeries

PROVIDER: PRJNA1094588 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR28511009.fastq.gz	Fastqsanger.gz
	SRR28511010.fastq.gz	Fastqsanger.gz
	SRR28511011.fastq.gz	Fastqsanger.gz
	SRR28511012.fastq.gz	Fastqsanger.gz
	SRR28511013.fastq.gz	Fastqsanger.gz

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Effect of lincRNA-p21 knockout (KO) in ventricles 8 weeks after sham/Transverse aortic restriction (TAC) surgeries

Project description:Cardiac hypertrophy is an adaptive response to pressure overload aimed at maintaining cardiac function. However, prolonged hypertrophy significantly increases the risk of maladaptive cardiac remodeling and heart failure. The role of cardiac long non-coding RNAs in cardiac hypertrophy and cardiomyopathy is not well understood. lincRNA-p21 was induced in mouse and human cardiomyopathy tissue. Global and cardiac-specific lincRNA-p21 knockout significantly suppressed pressure overload-induced ventricular wall thickening, stress marker elevation, and deterioration of cardiac function. Genome-wide transcriptome analysis and transcriptional network analysis revealed that lincRNA-p21 acts in trans to stimulate the NFAT/MEF2 pathway. Mechanistically, lincRNA-p21 bound to the scaffold protein KAP1. lincRNA-p21 cardiac-specific knockout suppressed stress-induced nuclear accumulation of KAP1, and KAP1 knockdown attenuated cardiac hypertrophy and NFAT activation. KAP1 positively regulated pathological hypertrophy by physically interacting with NFATC4 to promote the overactive status of NFAT/MEF2 signaling. Importantly, GapmeR ASO depletion of lincRNA-p21 similarly inhibited cardiac hypertrophy and adverse remodeling, highlighting the therapeutic potential of inhibiting lincRNA-p21.

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Transcriptomic analysis of mice heart following transverse aortic constriction (TAC) surgery

Project description:Transcriptomic analysis of mice heart following transverse aortic constriction (TAC) surgery

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Transcription profiling of mouse gene expression after transverse aortic constriction in mice: comparison of TAC vs. sham group at 2, 10 and 21 days to identify the differential expression of genes

Project description:Microarray analysis of gene expression after transverse aortic constriction in mice: comparison of TAC vs. sham group at 48 hours, 10 days, and 3 weeks.

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Expression Profiling of Heart (NH, TAC and TAC-R)

Project description:Transcriptome analysis of RNA samples from whole heart Transverse aortic constriction (TAC) is a well-established method for studying the pathomechanisms of heart failure in animal models of cardiac hypertrophy. A number of studies have shown that the treatment of heart failure in this animal model of cardiac hypertrophy suggests that hypertrophy and fibrosis may be reversible. However, since TAC-release protocols that improve hemodynamics by releasing physical stenosis remain undefined, the histological characteristics and molecular biological regulatory mechanisms of the reversibility of cardiac hypertrophy and fibrosis are unknown. Therefore, this study aimed to establish a TAC release model and investigate the reversibility and plasticity mechanisms of myocardial hypertrophy, fibrosis, and angiogenesis. Four weeks post-TAC surgery, TAC release was conducted by cutting the aortic stenosis sutures. The TAC group exhibited severe myocardial hypertrophy, fibrosis, and increased angiogenesis, along with diastolic dysfunction. Conversely, the TAC-release group showed reduced hypertrophy and fibrosis, and improved diastolic function. Gene expression analysis highlighted Regulator of Calcineurin 1 as a key player in cardiac function and histological changes post-TAC release. Rcan1 knockdown exacerbated myocardial hypertrophy and fibrosis in the TAC-release group. This study sheds light on the functional, structural, and histological changes in the heart induced by TAC release and elucidates some of its regulatory mechanisms.

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Expression data from mouse heart post transverse aortic constriction (TAC) -surgery 2 weeks

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RNA-seq data in cardiac tissues from cardiomyocyte-specific Acsl4 knockout mice after transverse aortic constriction

Project description:In order to investigate the differentially expressed genes in Acsl4 knockout after TAC (Transverse aortic constriction) or sham surgery. The experiment was divided to four groups including sham-operated Acsl4 flox/flox mice (FS), sham-operated Acsl4 knockout mice (KS), TAC-operated Acsl4 flox/flox mice (FT), TAC-operated Acsl4 knockout mice (KT) n=3 mice/group. The heart tissue was isolated after 21 days after performing TAC or sham surgery.

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Project description: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. Exon and gene expression changes were examined in 1 week and 4 week TAC-operated hearts compared to sham-operated hearts. We used C57/BL6 wildtype mice, and their left ventricles were subject to surgery (each n=2).

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Dynamic adaptation of myocardial proteome during heart failure development after induction of left ventricular pressure overload in mice

Project description:We analyzed time dependent global proteomic adaptations during heart failure (HF) progression in a mouse model, suffering from left ventricular pressure overload due to transverse aortic constriction (TAC), to gain deeper insights in the disease development and identify new biomarker candidates. The hearts from TAC and sham mice were examined by cardiac MRI on either day 4, 14, 21, 28, 42, and 56 after surgery (n=6 group/time point). At each time point, proteomes of the left (LV) and right ventricles (RV) of TAC and sham mice were analyzed by mass spectrometry (MS).

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