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- W3021416802 abstract "Calcific degeneration represents the most frequent aortic valve disease observed in industrialized countries. Our aim is to study modifications in the cytosolic and membrane protein profile of aortic interstitial valve cells (VIC) acquiring a pro-calcific phenotype. We studied a clonal population of bovine VIC that expresses bone-related proteins (such as alkaline phosphatase [ALP]) and calcifies a collagen matrix in response to endotoxin (LPS) treatment. A proteomic analysis was performed on proteins extracted from cells treated for 12 days with LPS (100 ng/mL) versus control. We identified 34 unique cytosolic and 10 unique membrane-associated proteins showing significant changes after treatment. These proteins are involved in several cellular functions, such as chaperone-mediated protein folding, protein metabolism and transport, cell redox/nitric oxide homeostasis, and cytoskeletal organization. Reduced expression of proteins involved in NOS bioactivity (such as DDAH-1 and -2) suggested a role for the l-arginine/ADMA ratio in controlling VIC phenotypic profile. In accordance with this hypothesis, we observed that exposure of clonal cells to l-arginine prevented LPS-induced ALP expression and collagen calcification. In conclusion, we identified several proteins involved in structural, metabolic, and signaling functions that are significantly altered in aortic VIC acquiring a pro-calcific profile, thus giving new insights into the pathogenesis of aortic valve degeneration." @default.
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- W3021416802 date "2010-10-18" @default.
- W3021416802 modified "2023-10-14" @default.
- W3021416802 title "Proteomic Analysis of Clonal Interstitial Aortic Valve Cells Acquiring a Pro-calcific Profile" @default.
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- W3021416802 doi "https://doi.org/10.1021/pr100682g" @default.
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