RelA suppresses the Wnt/β-catenin pathway without exerting trans-acting transcriptional ability
Several cellular signaling systems exhibit cross talk. Cross talk seems to play an important role in modifying signal effects. In vertebrates, the nuclear factor κ B (NF-κB) signaling pathway plays important roles in immune response, inflammation and apoptosis. Meanwhile, the Wnt/β-catenin signaling pathway is involved in oncogenesis and development. We show here that RelA, a component of NF-κB, specifically suppressed β-catenin/Tcf-dependent transcription. This suppression did not depend on the trans-acting transcriptional ability of RelA. Furthermore, RelA neither affected the nuclear import of β-catenin nor the DNA binding ability of the β-catenin/Tcf complex, suggesting that NF-κB modifies this signaling pathway after the binding of the β-catenin/Tcf complex with target DNA.
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Document Type: Research Article
Affiliations: Department of Viral Oncology, Institute for Virus Research, Kyoto University, Sakyo-ku, Kyoto 606-8507, Japan
Publication date: January 1, 2002
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- The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.
The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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