Cited by 492Wnt/β-catenin signaling in development and cancerDevelopmental Biology and Gene RegulationHedgehog Signaling Pathway Studies

Initiation of Wnt signaling: control of Wnt coreceptor Lrp6 phosphorylation/activation via frizzled, dishevelled and axin functions

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Zeng, Xin, Huang, He, Tamai, Keiko, Zhang, Xinjun, Harada, Yuko, Yokota, Chika, Almeida, Karla, Wang, Jianbo +5 more·2008·Development

Abstract

Canonical Wnt/β-catenin signaling has central roles in development and diseases, and is initiated by the action of the frizzled (Fz) receptor, its coreceptor LDL receptor-related protein 6 (Lrp6), and the cytoplasmic dishevelled (Dvl) protein. The functional relationships among Fz, Lrp6 and Dvl have long been enigmatic. We demonstrated previously that Wnt-induced Lrp6 phosphorylation via glycogen synthase kinase 3 (Gsk3) initiates Wnt/β-catenin signaling. Here we show that both Fz and Dvl functions are critical for Wnt-induced Lrp6 phosphorylation through Fz-Lrp6 interaction. We also show that axin, a key scaffolding protein in the Wnt pathway, is required for Lrp6 phosphorylation via its ability to recruit Gsk3, and inhibition of Gsk3 at the plasma membrane blocks Wnt/β-catenin signaling. Our results suggest a model that upon Wnt-induced Fz-Lrp6 complex formation, Fz recruitment of Dvl in turn recruits the axin-Gsk3 complex, thereby promoting Lrp6 phosphorylation to initiate β-catenin signaling. We discuss the dual roles of the axin-Gsk3 complex and signal amplification by Lrp6-axin interaction during Wnt/β-catenin signaling.

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Crossref · 10.1242/dev.013540

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  • The binding of Wnt to the Fz/LRP5/6 complex induces the membrane translocation of a key negative regulator of signaling Axin, which binds to a conserved sequence in the cytoplasmic tail of LRP5/6.

    “The binding of Wnt to the Fz/LRP5/6 complex induces the membrane translocation of a key negative regulator of signaling Axin, which binds to a conserved sequence in the cytoplasmic tail of LRP5/6.27,28”

    From Wnt signal transduction pathways (2008) · cites this paper as [28]

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Authors
Zeng, X., Huang, H., Tamai, K., Zhang, X., Harada, Y., Yokota, C., Almeida, K., Wang, J., Doble, B., Woodgett, J., Wynshaw-Boris, A., Hsieh, J.-C., & He, X.
Affiliations
  • Boston Children's Hospital (US)
  • University of California San Diego (US)
  • Samuel Lunenfeld Research Institute, 600 University Avenue, Toronto, Ontario,M5G 1X5, Canada.
  • Stony Brook University (US)
Corresponding author
He, Xi
Venue
Development
Published
2008-01-15
Volume
135
Issue
2
Pages
367-375
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W1837463574
Cited by
492
References
56
Citations by year
2026: 8 · 2025: 16 · 2024: 35 · 2023: 15 · 2022: 20 · 2021: 18 · 2020: 19 · 2019: 18 · 2018: 29 · 2017: 27 · 2016: 21 · 2015: 24 · 2014: 41 · 2013: 26 · 2012: 32
FWCI
12.46
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Development (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Journal of Cell Science
Funders
  • Canadian Institutes of Health Research (12043)
  • National Institute of Neurological Disorders and Stroke (R01NS073159)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Hedgehog Signaling Pathway Studies
Keywords
Wnt/β-catenin signaling, LRP6 phosphorylation, Frizzled receptors, Dishevelled, Axin, glycogen synthase kinase-3, signal amplification, co-receptors
MeSH terms
Dishevelled Proteins, Animals, Cell Line, Cell Membrane, Embryo, Nonmammalian, Enzyme Inhibitors, Humans, Models, Biological, Phosphoproteins, Phosphorylation, Protein Binding, Receptors, LDL, Repressor Proteins, Xenopus, Signal Transduction, Protein Structure, Tertiary, Xenopus Proteins, Glycogen Synthase Kinase 3, Adaptor Proteins, Signal Transducing, Wnt Proteins, Frizzled Receptors, beta Catenin, Mice, Axin Protein, Low Density Lipoprotein Receptor-Related Protein-6

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