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- W2129128575 abstract "To clarify how anti-adipogenic factors act on preadipocytes to inhibit their differentiation, we compared preadipocyte signaling responses generated by platelet-derived growth factor (PDGF; anti-adipogenic) versus insulin (pro-adipogenic). PDGF, but not insulin, stimulated the phosphorylation of inhibitor of κB kinase β (IKKβ) in a time-dependent manner. This PDGF-dependent phosphorylation event was inhibited by 60% ( P <0.05) when the cells were pretreated with wortmannin, indicating a requirement for the phosphatidylinositol (PI) 3-kinase/AKT pathway. IKKβ phosphorylation by PDGF was neither accompanied by IκBα degradation nor NF-κB activation. PDGF inhibited human adipocyte differentiation, assessed by triacylglycerol accumulation (75% reduction; P <0.01) and by fatty acid synthase protein expression (60% reduction; P <0.05); these responses were no longer apparent in the presence of sc-514, a selective inhibitor of IKKβ. Our data describe a novel PDGF response in human preadipocytes that involves the pro-inflammatory kinase IKKβ and demonstrate that it is required for the inhibition of adipogenesis." @default.
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- W2129128575 date "2009-01-13" @default.
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- W2129128575 title "IKKβ and the anti-adipogenic effect of platelet-derived growth factor in human abdominal subcutaneous preadipocytes" @default.
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- W2129128575 doi "https://doi.org/10.1677/joe-08-0411" @default.
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