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Ang II type 1a receptor in Marfan syndrome

ABSTRACT: Ang II type 1a receptor in Marfan syndrome

PROVIDER: PRJNA432050 | ENA |

REPOSITORIES: ENA

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Ang II type 1a receptor in Marfan syndrome

Project description:Using Cdh5-Cre and Sm22-Cre transgenes to characterize the impact of disruption of the angiotensin II type 1a receptor (AT1ar) in vascular endothelial and smooth muscle cells, respectively, of wild type (WT) mice compared to fibrillin-1 hypomorphic mice (Fbn1mgR/mgR mice) that replicate early onset progressively severe Marfan syndrome (MFS) with dissecting thoracic aortic aneurysm (TAA).

2018-01-30 | GSE109797 | GEO

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Aortic smooth muscle cell phenotype modulation during Marfan syndrome aneurysm formation

Project description:We report dynamic temporal and spatial smooth muscle cell phenotype modulation using aortic single cell RNA sequencing in a murine model of Marfan syndrome (Fbn1C1041G/+) and littermate controls. Aortic root/ascending aortic tissue samples from both genotypes were studied at 4 and 24 weeks of age. The non-aneurysmal descending thoracic aorta was also studied at 24 weeks. Finally human aortic tissue from a Marfan syndrome patient undergoing aneurysm repair surgery was studied.

2020-06-30 | GSE153534 | GEO

Loss of TGFβ signaling in the perichondrium drives longitudinal bone overgrowth in mice with Marfan syndrome

Project description:The goal of this study is to define the main tissue and mechanism implicated in the long bone overgrowth phenotype in mice with Marfan syndrome

2022-10-11 | GSE189091 | GEO

A Marfan syndrome gene expression phenotype in cultured skin fibroblasts

Project description:Background: Marfan syndrome (MFS) is a heritable connective tissue disorder caused by mutations in the fibrillin-1 gene. This syndrome constitutes a significant identifiable subtype of aortic aneurysmal disease, accounting for over 5% of ascending and thoracic aortic aneurysms. Results: We used spotted membrane DNA macroarrays to identify genes whose altered expression levels may contribute to the phenotype of the disease. Our analysis of 4132 genes identified a subset with significant expression differences between skin fibroblast cultures from unaffected controls versus cultures from affected individuals with known fibrillin-1 mutations. Subsequently, 10 genes were chosen for validation by quantitative RT-PCR. Conclusions: Differential expression of many of the validated genes was associated with MFS samples when an additional group of unaffected and MFS affected subjects were analyzed (p-value < 3 x 10-6 under the null hypothesis that expression levels in cultured fibroblasts are unaffected by MFS status). An unexpected observation was the range of individual gene expression. In unaffected control subjects, expression ranges exceeding 10 fold were seen in many of the genes selected for qRT-PCR validation. The variation in expression in the MFS affected subjects was even greater. Keywords: disease state comparison; Marfan syndrome; cultured skin fibroblasts

2007-09-14 | GSE8759 | GEO

Expression data from Angiotensin II (Ang II)-treated Rat Vascular Smooth Muscle Cells (RVSMC)

Project description:Angiotensin II (Ang II)-mediated vascular smooth muscle cells (VSMC) dysfunction plays a critical role in cardiovascular diseases. However, the gene expression in this process is unclear. We used Rat Affymetrix gene array to profile Ang II-regulated gene in RVSMC and evaluated their role in VSMC dysfunction. Examined 4 samples of Rat VSMC in triplicate. Control (without Ang II treatment) and 3 samples treated with Ang II for 6h, 12h, and 24h. Compared the changes in gene expression in Ang II treated samples relative to control samples.

2012-03-23 | E-GEOD-35627 | biostudies-arrayexpress

Smooth muscle cell-specific Klf4 deletion in Marfan syndrome aortic root aneurysm

Project description:Aortic smooth muscle cell (SMC) phenotype modulation is a central feature of cell-mediated pathology in Marfan syndrome aortic aneurysm and Klf4 is proposed to contribute to this process. We generated mice with smooth muscle cell-specific Klf4 deletion using an Myh11-creERT2 transgene, induced deletion at 8 weeks and performed single cell RNA sequencing at 24 weeks on whole aortic root tissues.

2022-08-23 | GSE206227 | GEO

17 -estradiol impedes aortic root dilation and rupture in male Marfan mice

Project description:Thoracic aortic aneurysms have a higher prevalence in male patients compared to female patients. Marfan syndrome causes a hereditary form of TAA with dilation of the aortic root. Male patients with Marfan syndrome are more likely than women to have aortic dilation and dissection and mouse models of Marfan syndrome demonstrate larger aortic roots in males compared to females even after adjustment for body size. Similar sex disparities are present in patients and models of abdominal aortic aneurysms where estrogen has been demonstrated to attenuate aneurysm formation perhaps through anti-inflammatory mechanisms. In this study we demonstrate the effects of estrogen on aortic dilation and rupture in a Marfan mouse model and we investigate if these effects operate through suppression of complement components of the immune system.

2024-02-14 | PXD037853 | Pride

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