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Content Provider | frontiers |
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Author | Fu, Bo Wang, Jing Wang, Lianqun Wang, Qiang Guo, Zhigang Xu, Meilin Jiang, Nan |
Abstract | Background: This study aimed to define changes in the metabolic and protein profiles of patients with calcific aortic valve disease (CAVD). Methods: We analyzed cardiac valve samples of patients with and without (control) CAVD (n = 24 per group) using untargeted metabolomics and tandem mass tag-based quantitative proteomics. Significantly different metabolites and proteins between the CAVD and control groups were screened; then, functional enrichment was analyzed. We analyzed co-expressed differential metabolites and proteins, and constructed a metabolite-protein-pathway network. The expression of key proteins was validated using western blotting. Results: Differential analysis identified 229 metabolites in CAVD among which, 2-aminophenol, hydroxykynurenine, erythritol, carnosine, and choline were the top five. Proteomic analysis identified 549 differentially expressed proteins in CAVD, most of which were localized in the nuclear, cytoplasmic, extracellular, and plasma membranes. Levels of selenium binding protein 1 (SELENBP1) positively correlated with multiple metabolites. Adenosine triphosphate-binding cassette transporters, starch and sucrose metabolism, hypoxia-inducible factor 1 (HIF-1) signaling, and purine metabolism were key pathways in the network. Ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1), calcium2+/calmodulin-dependent protein kinase II delta (CAMK2D), and ATP binding cassette subfamily a member 8 (ABCA8) were identified as hub proteins in the metabolite-protein-pathway network as they interacted with ADP, glucose 6-phosphate, choline, and other proteins. Western blotting confirmed that ENPP1 and ABCA8 were upregulated, whereas CAMK2D was downregulated in CAVD samples. Conclusions: Themetabolic and protein profiles of cardiac valves from patients with CAVD significantly changed. The present findings provide a holistic view of the molecular mechanisms underlying CAVD that may lead to the development of novel diagnostic biomarkers and therapeutic targets to treat CAVD. |
ISSN | 2297055X |
DOI | 10.3389/fcvm.2022.944521 |
Volume Number | 9 |
Journal | Frontiers in Cardiovascular Medicine |
Language | English |
Publisher Date | 2022-10-13 |
Access Restriction | Open |
Subject Keyword | Molecular Metabolomics Proteomics Cardiac valve Calcific aortic valve disease (CAVD) |
Content Type | Text |
Resource Type | Article |
Subject | Cardiology and Cardiovascular Medicine |
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