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Matches in SemOpenAlex for { <https://semopenalex.org/work/W1974955420> ?p ?o ?g. }

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• W1974955420 abstract "Nuclear factor-kappaB (NF-kappaB) plays a central role in the development of bleomycin (BLM) lung toxicity, but the regulatory mechanisms are still unknown. In the present study, we investigated the cytotoxic effect of BLM on cultured human bronchial epithelial cells (BECs) and first confirmed that BLM induced the transcriptional activation of NF-kappaB signaling in BECs. We also found that BLM activated Akt (protein kinase B, PKB) and increased the phosphorylation level of glycogen synthase kinase 3beta (GSK3beta). GSK3beta is known to be a key downstream target of Akt, and LY294002, the PI3K (phosphatidylinositol 3-kinase)/Akt inhibitor, which promoted the dephosphorylation of GSK3beta, significantly attenuated BLM-induced NF-kappaB activation. Next, we further observed that constitutively active GSK3beta stabilized the inhibitor of NF-kappaB (IkappaBalpha), inhibited p65 nuclear translocation and partially blocked BLM-induced NF-kappaB activation. Importantly, a co-immunoprecipitation assay revealed that GSK3beta formed a complex with IkappaBalpha, while GSK3beta phosphorylation caused by BLM led to their dissociation. These results suggest that BLM can induce the activation of NF-kappaB signaling in BECs and this process is tightly associated with the phosphorylation status of GSK3beta, implying a possible regulatory mechanism of NF-kappaB signaling in BECs during the toxic lung injury induced by BLM." @default.
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• W1974955420 date "2009-06-01" @default.
• W1974955420 modified "2023-10-16" @default.
• W1974955420 title "Bleomycin-induced nuclear factor-κB activation in human bronchial epithelial cells involves the phosphorylation of glycogen synthase kinase 3β" @default.
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• W1974955420 doi "https://doi.org/10.1016/j.toxlet.2009.02.023" @default.
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