Cited by 81Chromatin Remodeling and CancerWnt/β-catenin signaling in development and cancerGenetics and Neurodevelopmental Disorders

Chromatin-Remodeling-Factor ARID1B Represses Wnt/β-Catenin Signaling

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Vasileiou, Georgia, Ekici, Arif B., Uebe, Steffen, Zweier, Christiane, Hoyer, Juliane, Engels, Hartmut, Behrens, Jürgen, Reis, André +1 more·2015·The American Journal of Human Genetics

Abstract

The link of chromatin remodeling to both neurodevelopment and cancer has recently been highlighted by the identification of mutations affecting BAF chromatin-remodeling components, such as ARID1B, in individuals with intellectual disability and cancer. However, the underlying molecular mechanism(s) remains unknown. Here, we show that ARID1B is a repressor of Wnt/β-catenin signaling. Through whole-transcriptome analysis, we find that in individuals with intellectual disability and ARID1B loss-of-function mutations, Wnt/β-catenin target genes are upregulated. Using cellular models of low and high Wnt/β-catenin activity, we demonstrate that knockdown of ARID1B activates Wnt/β-catenin target genes and Wnt/β-catenin-dependent transcriptional reporters in a β-catenin-dependent manner. Reciprocally, forced expression of ARID1B inhibits Wnt/β-catenin signaling downstream of the β-catenin destruction complex. Both endogenous and exogenous ARID1B associate with β-catenin and repress Wnt/β-catenin-mediated transcription through the BAF core subunit BRG1. Accordingly, mutations in ARID1B leading to partial or complete deletion of its BRG1-binding domain, as is often observed in intellectual disability and cancers, compromise association with β-catenin, and the resultant ARID1B mutant proteins fail to suppress Wnt/β-catenin signaling. Finally, knockdown of ARID1B in mouse neuroblastoma cells leads to neurite outgrowth through β-catenin. The data suggest that aberrations in chromatin-remodeling factors, such as ARID1B, might contribute to neurodevelopmental abnormalities and cancer through deregulation of developmental and oncogenic pathways, such as the Wnt/β-catenin signaling pathway.

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Crossref · 10.1016/j.ajhg.2015.08.002

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  • Mutations disrupting ARID1B result in activation of Wnt signaling and dysregulation of B-catenin transcription.

    “Mutations that disrupt ARID1B result in activation of Wnt signaling and dysregulation of B-catenin transcription (Vasileiou et al., 2015).”

    From Getting to the cores of autism (2019) · cites this paper as Vasileiou et al., 2015

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Authors
Vasileiou, G., Ekici, A. B., Uebe, S., Zweier, C., Hoyer, J., Engels, H., Behrens, J., Reis, A., & Hadjihannas, M. V.
Affiliations
  • Friedrich-Alexander-Universität Erlangen-Nürnberg (DE)
  • University of Bonn (DE)
Corresponding author
Reis, André
Venue
The American Journal of Human Genetics
Publisher
Elsevier BV
Published
2015-09
Volume
97
Issue
3
Pages
445-456
ISSN
0002-9297 (ISSN-L)
OpenAlex
W1914281583
Cited by
81
References
49
Citations by year
2026: 4 · 2025: 4 · 2024: 4 · 2023: 9 · 2022: 6 · 2021: 15 · 2020: 9 · 2019: 8 · 2018: 10 · 2017: 4 · 2016: 6 · 2015: 2
FWCI
3.19
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Human Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
ARID1B, Wnt/β-catenin signaling, chromatin remodeling, SWI/SNF complex, SMARCA4, transcriptional repression, intellectual disability, cancer, β-catenin destruction complex, neurite outgrowth, brain development, loss-of-function mutations
MeSH terms
DNA-Binding Proteins, Humans, Luciferases, Microscopy, Fluorescence, Transcription Factors, Blotting, Western, DNA, Complementary, Computational Biology, RNA, Small Interfering, Chromatin Assembly and Disassembly, Immunoprecipitation, beta Catenin, Wnt Signaling Pathway, Real-Time Polymerase Chain Reaction

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