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- W1968125429 abstract "Abstract The shear stress–induced transcription factor Krüppel-like factor 2 (KLF2) confers antiinflammatory properties to endothelial cells through the inhibition of activator protein 1, presumably by interfering with mitogen-activated protein kinase (MAPK) cascades. To gain insight into the regulation of these cascades by KLF2, we used antibody arrays in combination with time-course mRNA microarray analysis. No gross changes in MAPKs were detected; rather, phosphorylation of actin cytoskeleton-associated proteins, including focal adhesion kinase, was markedly repressed by KLF2. Furthermore, we demonstrate that KLF2-mediated inhibition of Jun NH2-terminal kinase (JNK) and its downstream targets ATF2/c-Jun is dependent on the cytoskeleton. Specifically, KLF2 directs the formation of typical short basal actin filaments, termed shear fibers by us, which are distinct from thrombin- or tumor necrosis factor-α–induced stress fibers. KLF2 is shown to be essential for shear stress–induced cell alignment, concomitant shear fiber assembly, and inhibition of JNK signaling. These findings link the specific effects of shear-induced KLF2 on endothelial morphology to the suppression of JNK MAPK signaling in vascular homeostasis via novel actin shear fibers." @default.
- W1968125429 created "2016-06-24" @default.
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- W1968125429 date "2010-03-25" @default.
- W1968125429 modified "2023-10-13" @default.
- W1968125429 title "KLF2-induced actin shear fibers control both alignment to flow and JNK signaling in vascular endothelium" @default.
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- W1968125429 doi "https://doi.org/10.1182/blood-2009-06-228726" @default.
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