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Atherosclerotic process regulates arterial damage, abdominal aortic aneurysm (AAA) formation and rupture

ABSTRACT: Atherosclerotic process regulates arterial damage, abdominal aortic aneurysm (AAA) formation and rupture

PROVIDER: PRJNA935663 | ENA |

REPOSITORIES: ENA

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Atherosclerotic process regulates arterial damage, abdominal aortic aneurysm (AAA) formation and rupture

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Project description:An abdominal aortic aneurysm (AAA) is a pathological widening of the aortic wall characterized by loss of AoSMCs, extracellular matrix degradation and local inflammation. This condition is often asymptomatic until rupture occurs, leading to high morbidity and mortality rates. We conducted single-cell RNA sequencing (scRNA-seq) from AAA patients´s specimens to profile gene expression at single cell level and to gain insight on cell types relevant to disease dynamics.

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Murine Abdominal Aortic Aneurysm, PPE Model: Transcriptional Profiling of Sham vs. AAA at Day 7

Project description:Transcriptional profiling of infrarenal aortic tissue from Male 10-week-old C57BL/6J mice after AAA-induction with porcine pancreatic elastase, compared with sham-operated mice. Includes samples obtained 7 days after aneurysm induction. Goal was to examine gene expression in developing AAA in this model, and compare with miRNA profiling performed using the same tissue. Two condition experiment, one infrarenal aorta per array. Sham vs. PPE at Day 7 post-operatively. Total 10 arrays: 5 sham D7, 5 PPE D7.

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Project description:Plasma biomarkers that identify abdominal aortic aneurysm (AAA) rupture risk would greatly assist in stratifying patients with small aneurysms. Identification of such biomarkers has hitherto been unsuccessful over a range of studies using different methods. The present study used an alternative proteomic approach to find new, potential plasma AAA biomarker candidates. Pre-fractionated plasma samples from twelve patients with AAA and eight matched controls without aneurysm were analyzed by mass spectrometry applying a tandem mass tag (TMT) technique. Eight proteins were differentially regulated in patients compared to controls, including decreased levels of the enzyme bleomycin hydrolase. The down-regulation of this enzyme was confirmed in an extended validation study using an ELISA assay. The TMT-based proteomic approach thus identified novel potential plasma biomarkers for AAA.

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