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Expression data from abdominal aorta of cutaneous inflammation mice

ABSTRACT: Expression data from abdominal aorta of cutaneous inflammation mice

PROVIDER: PRJNA940186 | ENA |

REPOSITORIES: ENA

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Expression data from abdominal aorta of cutaneous inflammation mice

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Aorta proteomic analysis thoracic-abdominal

Project description:Aortic aneurysms is increasing as the human population ages. Pathological oxidative stress is implicated in development of aortic aneurysms. We pursued a chemogenetic approach to create an animal model of aortic aneurysm formation using a transgenic mouse line DAAO-TGTie2 that expresses yeast D-amino acid oxidase (DAAO) under control of the endothelial Tie2 promoter. In DAAO-TGTie2 mice, DAAO generates the reactive oxygen species hydrogen peroxide (H2O2) in endothelial cells only when provided with D-amino acids. When DAAO-TGTie2 mice are chronically fed D-alanine, the animals become hypertensive and develop abdominal but not thoracic aortic aneurysms. Generation of H2O2 in the endothelium leads to oxidative stress throughout the vascular wall. Proteomic analyses indicate that the oxidant-modulated protein kinase JNK1 is dephosphorylated by the phophoprotein phosphatase DUSP3 in abdominal but not thoracic aorta, causing activation of KLF4-dependent transcriptional pathways that trigger phenotypic switching and aneurysm formation. Pharmacological DUSP3 inhibition completely blocks aneurysm formation caused by chemogenetic oxidative stress. These studies establish that regional differences in oxidant-modulated signaling pathways lead to differential disease progression in discrete vascular beds, and identify DUSP3 as a potential pharmacological target for the treatment of aortic aneurysms.

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RNA-sequencing of abdominal aortic aneurysm (AAA) and control abdominal aorta tissues

Project description:RNA-sequencing of abdominal aortic aneurysm (AAA) and control abdominal aorta tissues

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Comparison of infrarenal and suprarenal sections of mouse ApoE-/- abdominal aorta

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