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Characterization of Heart Valve Leaflets from Adult and Juvenile Rapacz Familial Hypercholesterolemic Swine

ABSTRACT: Rapacz Familial Hypercholesterolemic (RFH) swine have been used extensively in the vascular biology field as a robust model of complex atherosclerotic lesions. However, the heart valves from RFH swine have not been evaluated and it is unknown whether these animals develop calcific aortic valve disease without dietary intervention. Histological assessment of heart valve leaflets isolated from juvenile and adult swine revealed RFH swine develop the early hallmarks of the disease at two years of age. The goal of this microarray study was to gain some insight into the cellular and molecular mechanisms that lead to the observed hallmarks and initiation of the disease.

ORGANISM(S): Sus scrofa

PROVIDER: GSE53997 | GEO | 2014/01/11

SECONDARY ACCESSION(S): PRJNA234300

REPOSITORIES: GEO

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Characterization of Heart Valve Leaflets from Adult and Juvenile Rapacz Familial Hypercholesterolemic Swine

Project description:Rapacz Familial Hypercholesterolemic (RFH) swine have been used extensively in the vascular biology field as a robust model of complex atherosclerotic lesions. However, the heart valves from RFH swine have not been evaluated and it is unknown whether these animals develop calcific aortic valve disease without dietary intervention. Histological assessment of heart valve leaflets isolated from juvenile and adult swine revealed RFH swine develop the early hallmarks of the disease at two years of age. The goal of this microarray study was to gain some insight into the cellular and molecular mechanisms that lead to the observed hallmarks and initiation of the disease. RNA samples from three juvenile wild type, and three juvenile and four adult RFH swine aortic valve leaflets were isolated, processed, and hybridized to Affymetrix GeneChip Porcine Genome microarrays according to the manufacturer's instructions. The mean expression values of each probeset in the adult RFH samples were compared to those in the juvenile RFH samples. Likewise, the mean expression values of each probeset in the juvenile RFH samples were compared to those in the juvenile wild type samples.

2014-01-11 | E-GEOD-53997 | biostudies-arrayexpress

Dysregulated microRNAs in calcific aortic valve disease

Project description:Calcific aortic valve disease (CAVD) is a common heart valve disease, yet its underlying mechanism remains pooly understood. We aimed to explore the microRNAs funtion in CAVD and to develop novel miRNA therapy for CAVD.

2019-10-10 | GSE87885 | GEO

Gene expression from healthy male and female porcine aortic valve leaflets

Project description:Calcific aortic valvular disease (CAVD) is characterized by sclerosis of the aortic valve leaflets and recent clinical studies have linked several other risk factors to this disease, including male sex. In this study we examined potential sex-related differences in gene expression profiles between porcine male and female valvular interstitial cells (VICs) to explore possible differences in CAVD propensity on the cellular level. RNA samples from three male and three female healthy porcine aortic valve leaflets (denuded of endothelial cells) were isolated, processed, and hybridized to AffymetrixM-BM-. GeneChip Porcine Genome microarrays according to manufacturerM-bM-^@M-^Ys instructions. Mean expression values of each probe set in the male samples were compared with those in the female samples.

2013-01-02 | E-GEOD-33654 | biostudies-arrayexpress

Gene expression from healthy male and female porcine aortic valve leaflets

2013-01-02 | GSE33654 | GEO

Dysregulated long non-coding RNAs and genes in calcified aortic valve disease

Project description:Calcific aortic valve disease (CAVD) is the most common valvular heart disease in the aging population, ranging from initial aortic valve sclerosis to advanced aortic valve stenosis (AVS), but its underlying mechanism remains poorly understood. The present study aimed to explore the differentially expressed long non-coding RNAs and genes in CAVD.

2023-05-31 | GSE233819 | GEO

Expression data of human aortic valve cusps

Project description:Calcific aortic valve disease is the most common form of valvular heart disease in the Western World. Milder degrees of aortic valve calcification is called aortic sclerosis and severe calcification with impaired leaflet motion is called aortic stenosis. We used microarrays to detail the global programme of gene expression underlying cdevelopment of calcified aortic valve disease in humans.

2015-10-01 | GSE51472 | GEO

Stanniocalcin-1 mediates aortic valve calcification via promoting osteochondrogenic differentiation from valve interstitial cells

Project description:Although calcific aortic valve stenosis (CAVS) is the most prevalent valvular heart disease, the molecular mechanisms underlying aortic valve calcification remain unknown. Here, we found a significant elevation in stanniocalcin-1 (STC1) expression in the valve interstitial cells (VICs) of calcific aortic valves by combined analysis of our comprehensive gene expression data and microarray datasets reported previously. Immunohistochemical staining showed that STC1 was located around the calcific area in the aortic valves of patients with CAVS. In vitro experiments using inhibitors and siRNA targeting osteoblast differentiation signaling revealed that activation of the Akt/STC1 axis was essential for runt-related transcription factor 2 (RUNX2) induction in the VICs. RNA sequencing and bioinformatics analysis of STC1-knocked down VICs in osteoblast differentiation medium resulted in silencing of the induction of osteoarthritis signaling-related genes, including RUNX2 and COL10A1. STC1 depletion in the murine CAVS model improved aortic valve dysfunction with high peak velocity and valve thickening and suppressed the appearance of osteochondrocytes. STC1-deficient mice also exhibited complete calcification abolishment, although partial valve thickening by aortic valve injury was observed. Our findings suggest that STC1 may be a critical factor in determining valve calcification and a novel target for preventing the transition to severe CAVS with calcification. We analyzed the gene expression profiles of the valve interstitial cells (VICs) isolated from noncalcific and calcific areas in calcific aortic valve stenosis (CAVS) donors using a gene microarray.

2023-12-31 | GSE226781 | GEO

Aortic valve transcriptome in CHIP, non-CHIP and non-calcific controls.

Project description:The aim of the present study was to gain insights on the pathological process of Calcific Aortic Valve Disease in CHIP carriers. To uncover molecular pathways that could link CHIP to CAVD, we exanimated the aortic valve transcriptome from CHIP, non-CHIP patients, or non-calcific controls with RNAseq.

2022-08-02 | E-MTAB-11354 | biostudies-arrayexpress

Inhibitory Role of Notch1 in Calcific Aortic Valve Disease

Project description:Aortic valve calcification is the most common form of valvular heart disease, but the mechanisms of calcific aortic valve disease (CAVD) are unknown. NOTCH1 mutations are associated with aortic valve malformations and adult-onset calcification in families with inherited disease. The Notch signaling pathway is critical for multiple cell differentiation processes, but its role in the development of CAVD is not well understood. The aim of this study was to investigate the molecular changes that occur with inhibition of Notch signaling in the aortic valve. Notch signaling pathway members are expressed in adult aortic valve cusps, and examination of diseased human aortic valves revealed decreased expression of NOTCH1 in areas of calcium deposition. To identify downstream mediators of Notch1, we examined gene expression changes that occur with chemical inhibition of Notch signaling in rat aortic valve interstitial cells (AVICs). We found significant downregulation of Sox9 along with several cartilage-specific genes that were direct targets of the transcription factor, Sox9. Loss of expression Sox9 has been published to be associated with aortic valve calcification. Utilizing an in vitro porcine aortic valve calcification model system, inhibition of Notch activity resulted in accelerated calcification while stimulation of Notch signaling attenuated the calcific process. Finally, the addition of Sox9 was able to prevent the calcification of porcine AVICs that occurs with Notch inhibition. In conclusion, loss of Notch signaling contributes to aortic valve calcification via a Sox9-dependent mechanism. 3 samples of aortic valve interstitial cells treated with DAPT were compared with 3 samples of aortic valve interstitial cells treated with DMSO

2011-08-25 | E-GEOD-31668 | biostudies-arrayexpress

Exploring Genes Regulated by circHIPK3 in Aortic Valve Interstitial Cells

Project description:Aortic valve calcific disease (CAVD) is a common heart valve condition typically characterized by severe narrowing of the aortic valve. Our previous research has shown that circHIPK3 is downregulated in calcified aortic valve tissues and plays a role in regulating the progression of CAVD. To further investigate how circHIPK3 exerts its inhibitory effects on aortic valve calcification, we overexpressed circHIPK3 in aortic valve interstitial cells and conducted RNA-seq analysis, revealing that circHIPK3 regulates key factors in the Wnt signaling pathway. These findings contribute to a deeper understanding of the molecular mechanisms underlying CAVD, particularly the potential involvement of circRNAs in this disease.

2024-02-02 | GSE254394 | GEO

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