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  • Title: Involvement of GSK-3beta in TWEAK-mediated NF-kappaB activation.
    Author: De Ketelaere A, Vermeulen L, Vialard J, Van De Weyer I, Van Wauwe J, Haegeman G, Moelans I.
    Journal: FEBS Lett; 2004 May 21; 566(1-3):60-4. PubMed ID: 15147869.
    Abstract:
    Glycogen synthase kinase-3beta (GSK-3beta) is a key component of several signaling pathways. We found that a short variant of 'TNF-like weak inducer of apoptosis' (shortTWEAK) formed a complex with GSK-3beta in a yeast two-hybrid system. We demonstrate that shortTWEAK and GSK-3beta colocalize in the nucleus of human neuroblastoma cells. We also show that TWEAK is internalized in different cell lines and that it translocates to the nucleus. This event causes the degradation of IkappaBalpha, the nuclear translocation of both GSK-3beta and p65, and the induction of NF-kappaB-driven gene expression. We demonstrate that the induction of IL-8 expression by TWEAK can be counteracted by LiCl. Taken together, these data suggest that GSK-3beta plays an important role in the signal transduction pathway between TWEAK and NF-kappaB.
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