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- W2022600438 abstract "Tangeretin, a natural polymethoxylated flavone concentrated in the peel of citrus fruits, is known to have antiproliferative, antiinvasive, antimetastatic and antioxidant activities. However, the effect of tangeretin on vascular smooth muscle cells (VSMCs) is unknown. This study examined the effect of tangeretin on platelet-derived growth factor (PDGF)-BB-induced proliferation and migration of rat aortic smooth muscle cells (RASMCs) as well as its underlying mechanisms. Tangeretin significantly inhibited proliferation, DNA synthesis and migration of PDGF-BB-stimulated RASMCs without inducing cell death. Treatment with tangeretin-induced cell-cycle arrest in the G₀/G₁ phase was associated with down-regulation of cyclin D1 and cyclin E in addition to up-regulation of p27(kip1). We also showed that tangeretin inhibited PDGF-BB-induced phosphorylation of AKT, while it had no effect on the phosphorylation of phospholipase Cγ (PLCγ), PDGF receptor β-chain (PDGF-Rβ) and extracellular signal-regulated kinase 1/2 (ERK1/2), c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinases (MAPKs). An in vitro kinase assay revealed that tangeretin inhibited AKT activity in a dose-dependent manner. Moreover, treatment of LY294002, a phosphoinositide 3-kinase (PI3K) inhibitor, had similar effects than that of tangeretin on the expression of p27(kip1) and cyclin D1, as well as cell migration in PDFG-BB-stimulated RASMCs. Taken together, these findings suggest that tangeretin could suppress PDGF-BB-induced proliferation and migration of RASMCs through the suppression of PI3K/AKT signaling pathway, and may be a potential candidate for preventing or treating vascular diseases, such as atherosclerosis and restenosis." @default.
- W2022600438 created "2016-06-24" @default.
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- W2022600438 date "2011-12-01" @default.
- W2022600438 modified "2023-09-24" @default.
- W2022600438 title "Tangeretin, a citrus flavonoid, inhibits PGDF-BB-induced proliferation and migration of aortic smooth muscle cells by blocking AKT activation" @default.
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- W2022600438 doi "https://doi.org/10.1016/j.ejphar.2011.10.011" @default.
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