Cited by 343Wnt/β-catenin signaling in development and cancerGenetic factors in colorectal cancerSignaling Pathways in Disease

The APC tumour suppressor has a nuclear export function

Rosin-Arbesfeld, Rina, Townsley, Fiona, Bienz, Mariann·2000·Nature

Abstract

The adenomatous polpyposis coli (APC) protein is mutated in most colorectal tumours. Nearly all APC mutations are truncations, and many of these terminate in the mutation cluster region located halfway through the protein. In cancer cells expressing mutant APC, beta-catenin is stabilized and translocates into the nucleus to act as a transcriptional co-activator of T-cell factor. During normal development, APC also promotes the destabilization of beta-catenin and Drosophila Armadillo. It does so by binding to the Axin complex which earmarks beta-catenin/Armadillo for degradation by the proteasome pathway. APC has a regulatory role in this process, which is poorly understood. Here we show that APC contains highly conserved nuclear export signals 3' adjacent to the mutation cluster region that enable it to exit from the nucleus. This ability is lost in APC mutant cancer cells, and we provide evidence that beta-catenin accumulates in the nucleus as a result. Thus, the ability of APC to exit from the nucleus appears to be critical for its tumour suppressor function.

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Crossref · 10.1038/35023016

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  • Asymmetric membrane accumulation of Dsh is important for the non-canonical pathway and convergent extension movements.

    “As mentioned above, asymmetric membrane accumulation of Dsh is important for the non-canonical pathway and convergent extension movements.118–120”

    From Wnt signal transduction pathways (2008) · cites this paper as [119]

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Authors
Rosin-Arbesfeld, R., Townsley, F., & Bienz, M.
Affiliations
MRC Laboratory of Molecular Biology (GB)
Corresponding author
Bienz, Mariann
Venue
Nature
Published
2000-08
Volume
406
Issue
6799
Pages
1009-1012
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1666932156
Cited by
343
References
30
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 7 · 2021: 4 · 2020: 6 · 2019: 4 · 2018: 8 · 2017: 4 · 2016: 6 · 2015: 6 · 2014: 7 · 2013: 12 · 2012: 10
FWCI
15.18
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Genetic factors in colorectal cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
Keywords
nuclear export, nuclear export signal, β-catenin stabilization, colorectal cancer, proteasomal degradation, armadillos, mutation cluster region, tumor suppressor function
MeSH terms
Amino Acid Sequence, Animals, Biological Transport, Cell Nucleus, Cytoskeletal Proteins, Drosophila, Fatty Acids, Unsaturated, Multigene Family, Genetic Complementation Test, Humans, Molecular Sequence Data, Mutation, Peptide Fragments, Recombinant Fusion Proteins, Transfection, Tumor Cells, Cultured, Colorectal Neoplasms, Trans-Activators, Conserved Sequence, Genes, Reporter, COS Cells, Adenomatous Polyposis Coli Protein, beta Catenin

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