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Single-nucleus Transcriptomics Reveals Cardiac Cell Type-specific Diversification in Metabolic Disease Transgenic Pigs

ABSTRACT: Single-nucleus Transcriptomics Reveals Cardiac Cell Type-specific Diversification in Metabolic Disease Transgenic Pigs

PROVIDER: PRJNA1028552 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26395514_1.fastq.gz	Fastqsanger.gz
	SRR26395514_2.fastq.gz	Fastqsanger.gz
	SRR26395515_1.fastq.gz	Fastqsanger.gz
	SRR26395515_2.fastq.gz	Fastqsanger.gz
	SRR26395516_1.fastq.gz	Fastqsanger.gz

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Single-nucleus Transcriptomics Reveals Cardiac Cell Type-specific Diversification in Metabolic Disease Transgenic Pigs

Project description:Cardiac injury triggered by early metabolic disease is poorly investigated due to the complexity of pathophysiology. We comprehensively reveal the cellular landscape of healthy and metabolically disturbed heart through single-nucleus RNA sequencing, using the metabolic disease-susceptible transgenic pig model as material.

2024-04-30 | GSE245458 | GEO

Vitreous proteome of transgenic INSC94Y pigs compared to wild type

Project description:INSC94Y transgenic pigs serve as a valuable model for permanent neonatal diabetes mellitus. Through genetically engineered modifications in the insulin (INS) gene, this model presents with impaired insulin secretion, resulting elevated fasting blood-glucose levels (hyperglycemia) [1].One of the severe complications of diabetes mellitus are hypoglycemia-mediated morphological abnormalities in the retina, also described as diabetic retinopathy (DR). Adjacent to the retina lies the vitreous, a gelatinous, highly hydrated matrix, which is important for ocular function and retinal physiology. It contains variety of proteins and signaling molecules, which are useful for the characterization of the biological activity of the vitreous itself, and may help to elucidate molecular processes occurring in the retina, especially under pathophysiological conditions and in disease. To gain insight into the proteomic profile of porcine vitreous and detect possible differences relevant to DR pathogenesis, we used discovery proteomics for analysis of INSC94Y vitreous compared to wild-type controls. Reference: [1] Renner, S.; Braun-Reichhart, C.; Blutke, A.; Herbach, N.; Emrich, D.; Streckel, E.; Wunsch, A.; Kessler, B.; Kurome, M.; Bahr, A.; et al. Permanent neonatal diabetes in INS(C94Y) transgenic pigs. Diabetes 2013, 62, 1505-1511, doi:10.2337/db12-1065.

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Cardiac transcriptome analysis of RKIP-transgenic and GRK2-transgenic mice by NGS

Project description:The RAF kinase inhibitor protein, RKIP, is a dual inhibitor of the RAF1 kinase and the G-protein-coupled receptor kinase 2 (GRK2). By inhibition of the proto-oncogenic and pro-survival RAF1-MAPK pathway, the RAF kinase inhibitor protein, RKIP, acts as a tumor suppressor, which enhances cardiomyocyte death and promotes the development of symptoms of heart failure. To elucidate pathomechanisms of heart failure induced by RKIP, the study determined the cardiac transcriptomes of eight-month-old, male, transgenic mice with cardiac-specific expression of RKIP (PEBP1) under control of the myocardium-specific, alpha-MHC promoter. In addition, the study determined the cardiac transcriptomes of GRK2-transgenic mice. Tg-GRK2 mice have a slightly increased transgenic expression of GRK2. According to NGS data, cardiac GRK2-Grk2 transcript levels of Tg-GRK2 mice are 1.59±0.10-fold higher than those of non-transgenic FVB hearts. In Tg-GRK2 mice, transgenic GRK2 is expressed under control of the ubiquitous CMV immediate-early promoter/enhancer. The non-transgenic control group are age-matched, male, nontransgenic FVB/N mice. NGS data of this study document transcriptome changes underlying the heart failure phenotype induced by transgenic RKIP expression and cardiac degeneration induced by GRK2 expression.

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Cardiac transcriptome analysis of RKIP-transgenic and GRK2-transgenic mice by NGS

Project description:Cardiac transcriptome analysis of RKIP-transgenic and GRK2-transgenic mice by NGS

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Cardiac transcriptome analysis of BBLN-transgenic mice by NGS

Project description:The study applied NGS to determine the cardiac transcriptomes of BBLN-transgenic mice with FVB/N background in comparison to those of non-transgenic FVB/N mice at an age of 8 months. The BBLN (Bublin coiled-coil protein) is the chromosome 9 open reading frame, C9orf16, with largely unknown function. To investigate the cardiac phenotype of increased cardiac BBLN transcript levels we generated BBLN-transgenic (Tg-BBLN) mice. Echocardiography documented that Tg-BBLN mice developed features of heart failure at an age of 8 months. To elucidate pathomechanisms of heart failure induced by BBLN, we performed NGS of the cardiac transcriptomes of eight-month-old, male, BBLN-transgenic mice with cardiac-specific expression of BBLN under control of the myocardium-specific, alpha-MHC promoter. The non-transgenic control group are age-matched, male, nontransgenic FVB/N mice. NGS data of this study document transcriptome changes underlying the heart failure phenotype induced by transgenic BBLN expression.

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Cardiac transcriptome analysis of BBLN-transgenic mice by NGS

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RNA-seq analysis of young swine following cardiac ischemia/reperfusion injury.

Project description:This study was a part of a larger study assessing the response of young pigs to cardiac ischemia/reperfusion (IR) injury. A mild cardiac injury approach (IR) was used in post-weaned pigs (1-month), to assess regenerative repair in young large mammals after transient ischemic injury. Female and male postnatal day (P)30 pigs were subjected to cardiac ischemia (1-hour) by occlusion of the left anterior descending artery followed by reperfusion (IR), or to sham operation. In pigs subjected to IR, myocardial damage occurred, indicated by increased circulating cardiac troponin I 2-hours post-ischemia. In addition, cardiac ejection fraction (EF) was significantly decreased 2-hours post-ischemia and reduced EF was maintained to the 4-week study end-point. Histology demonstrated evidence of CM cell cycling at 2-months of age in multinucleated CMs in both sham-operated and IR pigs. Following IR, regional scar formation and inflammation in the epicardial region proximal to injury were observed 4-weeks post-IR. Sex differences in cardiac function and collagen deposition were found, highlighting the importance of representing both sexes in cardiac injury studies. Together, our results describe an effective novel cardiac injury model in 1-month old swine, at a time when CM are still cycling. However, pigs subjected to IR show a prolonged decrease in cardiac function, and the formation of a small, regional scar with increased inflammation. Together, these data demonstrate that 1-month old pigs do not regenerate myocardium, but form a scar, after transient IR injury.

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