The PAK1 autoregulatory domain is required for interaction with NIK in Helicobacter pylori-induced NF-κB activation
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Abstract
Helicobacter pylori, the etiological agent of various human gastric diseases, induces the transcription factor nuclear factor κB (NF-κB) and proinflammatory cytokines/chemokines. We have characterised the direct interaction between p21-activated kinase 1 (PAK1) and NF-κB-inducing kinase (NIK) in H. pylori-infected epithelial cells. The dimerisation (DI) motif, which is part of the NH2-terminal autoregulatory domain of PAK1, is critical for this interaction, whereas NIK forms complexes with PAK1 through its carboxy-terminal IκB kinase α (IKKα) binding site. Since the identified interaction sites are also crucial for the binding of activator (Rac/Cdc42 in the case of PAK1) or effector molecules (IKKα in the case of NIK), sequential stepwise signalling is suggested. Furthermore, we show that mitogen-activated protein kinase kinase kinases (MAP3K), like TPL2 (tumour progression locus 2) and transforming growth factor β-activated kinase 1 (TAK1), have no impact on H. pylori-induced activation of NF-κB. These results identify the roles of PAK1 and NIK in a unique pathway involved in H. pylori-induced NF-κB activation, which is crucial for the induction of the innate immune response.
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©2006 by Walter de Gruyter Berlin New York
Artikel in diesem Heft
- Editor's Note
- Endothelial mediators and communication through vascular gap junctions
- Bradykinin and peripheral sensitization
- Renal gene expression profiling using kinin B1 and B2 receptor knockout mice reveals comparable modulation of functionally related genes
- Solvent-induced changes in photochemical activity and conformation of photosystem I particles by glycerol
- Interaction of the BELL-like protein ATH1 with DNA: role of homeodomain residue 54 in specifying the different binding properties of BELL and KNOX proteins
- Vitamin B1de novo synthesis in the human malaria parasite Plasmodium falciparum depends on external provision of 4-amino-5-hydroxymethyl-2-methylpyrimidine
- Ecto- and cytosolic 5′-nucleotidases in normal and AMP deaminase-deficient human skeletal muscle
- Dual signal transduction mediated by a single type of olfactory receptor expressed in a heterologous system
- Modulation of autocrine TNF-α-stimulated matrix metalloproteinase 9 (MMP-9) expression by mitogen-activated protein kinases in THP-1 monocytic cells
- The PAK1 autoregulatory domain is required for interaction with NIK in Helicobacter pylori-induced NF-κB activation
- Aflatoxin B1-induced toxicity in HepG2 cells inhibited by carotenoids: morphology, apoptosis and DNA damage
- Detection of prion particles in samples of BSE and scrapie by fluorescence correlation spectroscopy without proteinase K digestion
- A method to determine RNA and DNA oxidation simultaneously by HPLC-ECD: greater RNA than DNA oxidation in rat liver after doxorubicin administration
- NF-κB contributes to transcription of placenta growth factor and interacts with metal responsive transcription factor-1 in hypoxic human cells
Artikel in diesem Heft
- Editor's Note
- Endothelial mediators and communication through vascular gap junctions
- Bradykinin and peripheral sensitization
- Renal gene expression profiling using kinin B1 and B2 receptor knockout mice reveals comparable modulation of functionally related genes
- Solvent-induced changes in photochemical activity and conformation of photosystem I particles by glycerol
- Interaction of the BELL-like protein ATH1 with DNA: role of homeodomain residue 54 in specifying the different binding properties of BELL and KNOX proteins
- Vitamin B1de novo synthesis in the human malaria parasite Plasmodium falciparum depends on external provision of 4-amino-5-hydroxymethyl-2-methylpyrimidine
- Ecto- and cytosolic 5′-nucleotidases in normal and AMP deaminase-deficient human skeletal muscle
- Dual signal transduction mediated by a single type of olfactory receptor expressed in a heterologous system
- Modulation of autocrine TNF-α-stimulated matrix metalloproteinase 9 (MMP-9) expression by mitogen-activated protein kinases in THP-1 monocytic cells
- The PAK1 autoregulatory domain is required for interaction with NIK in Helicobacter pylori-induced NF-κB activation
- Aflatoxin B1-induced toxicity in HepG2 cells inhibited by carotenoids: morphology, apoptosis and DNA damage
- Detection of prion particles in samples of BSE and scrapie by fluorescence correlation spectroscopy without proteinase K digestion
- A method to determine RNA and DNA oxidation simultaneously by HPLC-ECD: greater RNA than DNA oxidation in rat liver after doxorubicin administration
- NF-κB contributes to transcription of placenta growth factor and interacts with metal responsive transcription factor-1 in hypoxic human cells