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- W2074317596 abstract "Objective— Intracellular tumor necrosis factor receptor-associated factors (TRAFs) translocation to lipid rafts is a key element in CD40-induced signaling. The purpose of this study was to investigate the influence of anthocyanin on CD40-mediated proinflammatory events in human endothelial cells and the underlying possible molecular mechanism. Methods and Results— Treatment of endothelial cells with anthocyanin prevented from CD40-induced proinflammatory status, measured by production of IL-6, IL-8, and monocyte chemoattractant protein-1 through inhibiting CD40-induced nuclear factor-κB (NF-κB) activation. TRAF-2 played pivotal role in CD40–NF-κB pathway as TRAF-2 small interference RNA (siRNA) diminished CD40-induced NF-κB activation and inflammation. TRAF-2 overexpression increased CD40-mediated NF-κB activation. Moreover, TRAF-2 almost totally recruited to lipid rafts after stimulation by CD40 ligand and depletion of cholesterol diminished CD40-mediated NF-κB activation. Exposure to anthocyanin not only interrupted TRAF-2 recruitment to lipid rafts but also decreased cholesterol content in Triton X-100 insoluble lipid rafts. However, anthocyanin did not influence the interaction between CD40 ligand and CD40 receptor. Conclusions— Our findings suggest that anthocyanin protects from CD40-induced proinflammatory signaling by preventing TRAF-2 translocation to lipid rafts through regulation of cholesterol distribution, which thereby may represent a mechanism that would explain the anti-inflammatory response of anthocyanin." @default.
- W2074317596 created "2016-06-24" @default.
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- W2074317596 date "2007-03-01" @default.
- W2074317596 modified "2023-10-15" @default.
- W2074317596 title "Anthocyanin Prevents CD40-Activated Proinflammatory Signaling in Endothelial Cells by Regulating Cholesterol Distribution" @default.
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- W2074317596 doi "https://doi.org/10.1161/01.atv.0000254672.04573.2d" @default.
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