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Two transactivation mechanisms cooperate for the bulk of HIF-1-responsive gene expression 总被引:6,自引:0,他引:6
Kasper LH Boussouar F Boyd K Xu W Biesen M Rehg J Baudino TA Cleveland JL Brindle PK 《The EMBO journal》2005,24(22):3846-3858
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Pereira T Zheng X Ruas JL Tanimoto K Poellinger L 《The Journal of biological chemistry》2003,278(9):6816-6823
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The carboxy-terminus of the hepatitis B virus X protein is necessary and sufficient for the activation of hypoxia-inducible factor-1alpha 总被引:3,自引:0,他引:3
Hepatitis B virus X protein (HBx) of the hepatitis B virus is strongly implicated in angiogenesis and metastasis during hepatocarcinogenesis. Previously, we reported that HBx enhances activity of hypoxia-inducible factor-1alpha (HIF-1alpha), a potent transactivator that induces angiogenic factors. Here, we delineate the structural region of HBx that potentiates HIF-1alpha. The carboxy-terminus of HBx increased the stability of HIF-1alpha protein, probably through inhibiting interaction with von Hippel-Lindau protein. Further, the carboxy-terminus of HBx enhanced the transactivation function of HIF-1alpha by enhancing its association with CREB binding protein (CBP). Finally, we demonstrated the physical association of HBx with the basic helix-loop-helix/PER-ARNT-SIM domain, the inhibitory domain, and the carboxy-terminal transactivation domain of HIF-1alpha in vivo. 相似文献
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MAPK signaling up-regulates the activity of hypoxia-inducible factors by its effects on p300 总被引:23,自引:0,他引:23
Sang N Stiehl DP Bohensky J Leshchinsky I Srinivas V Caro J 《The Journal of biological chemistry》2003,278(16):14013-14019
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Regulation of gene expression by the hypoxia-inducible factors 总被引:1,自引:0,他引:1
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Turn me on: regulating HIF transcriptional activity 总被引:1,自引:0,他引:1