Cited by 1,321Wnt/β-catenin signaling in development and cancerProtein Kinase Regulation and GTPase SignalingSignaling Pathways in Disease

Lithium inhibits glycogen synthase kinase-3 activity and mimics wingless signalling in intact cells

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Stambolic, Vuk, Ruel, Laurent, Woodgett, James R.·1996·Current Biology

Abstract

Background Exposing eukaryotic cells to lithium ions (Li+) during development has marked effects on cell fate and organization. The phenotypic consequences of Li+ treatment on Xenopus embryos and sporulating Dictyostelium are similar to the effects of inhibition or disruption, respectively, of a highly conserved protein serine/threonine kinase, glycogen synthase kinase-3 (GSK-3). In Drosophila, the GSK-3 homologue is encoded by zw3sgg, a segment-polarity gene involved in embryogenesis that acts downstream of wg. In higher eukaryotes, GSK-3 has been implicated in signal transduction pathways downstream of phosphoinositide 3-kinase and mitogen-activated protein kinases. Results We investigated the effect of Li+ on the activity of the GSK-3 family. At physiological doses, Li+ inhibits the activity of human GSK-3 beta and Drosophila Zw3Sgg, but has no effect on other protein kinases. The effect of Li+ on GSK-3 is reversible in vitro. Treatment of cells with Li+ inhibits GSK-3-dependent phosphorylation of the microtubule-associated protein Tau. Li+ treatment of Drosophila S2 cells and rat PC12 cells induces accumulation of cytoplasmic Armadillo/beta-catenin, demonstrating that Li+ can mimic Wingless signalling in intact cells, consistent with its inhibition of GSK-3. Conclusions Li+ acts as a specific inhibitor of the GSK-3 family of protein kinases in vitro and in intact cells, and mimics Wingless signalling. This reveals a possible molecular mechanism of Li+ action on development and differentiation.

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Crossref · 10.1016/s0960-9822(02)70790-2

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  • Sorafenib was effective in modulating transcriptional activity through TCF site and in decreasing β-catenin protein levels in cells with truncated/mutated β-catenin (HepG2, SNU398), in cells with wild type β-catenin (SNU387), and in cells with wild type β-catenin and induction of Wnt-signaling by GSK3β-inhibitor LiCl (Huh7).

    “Sorafenib was effective in modulating transcriptional activity through TCF site, and in decreasing β-catenin protein levels in cells with truncated/mutated β-catenin (HepG2, SNU398), in cells with wild type β-catenin (SNU387) and in cells with wild type β-catenin and induction of Wnt-signaling by GSK3β-inhibitor LiCl (Huh7) (Fig. 4A, Suppl. Fig. 7) (16).”

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Authors
Stambolic, V., Ruel, L., & Woodgett, J. R.
Affiliations
University of Toronto (CA)
Corresponding author
Woodgett, James R.
Venue
Current Biology
Publisher
Elsevier BV
Published
1996-12
Volume
6
Issue
12
Pages
1664-1669
ISSN
0960-9822 (ISSN-L)
OpenAlex
W1979993283
Cited by
1,321
References
0
Citations by year
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FWCI
10.49
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
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 › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
Keywords
lithium, glycogen synthase kinase-3, GSK3β, Wingless signalling, tau phosphorylation, protein kinase inhibition, cell fate, development (biology), Dictyostelium, Xenopus embryo, PC12 cells
MeSH terms
Animals, Cell Line, Humans, Microtubule-Associated Proteins, Proto-Oncogene Proteins, Signal Transduction, PC12 Cells, Protein Serine-Threonine Kinases, Calcium-Calmodulin-Dependent Protein Kinases, Lithium Chloride, COS Cells, Drosophila Proteins, Glycogen Synthase Kinases, Glycogen Synthase Kinase 3, Wnt1 Protein, Rats

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