Cited by 173Cell death mechanisms and regulationAxon Guidance and Neuronal SignalingCancer-related Molecular Pathways

The dependence receptor UNC5H2 mediates apoptosis through DAP‐kinase

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Llambi, Fabien, Lourenço, Filipe Calheiros, Gozuacik, Devrim, Guix, Catherine, Pays, Laurent, Del Rio, Gabriel, Kimchi, Adi, Mehlen, Patrick·2005·The EMBO Journal

Abstract

Netrin-1 receptors UNC5H (UNC5H1-4) were originally proposed to mediate the chemorepulsive activity of netrin-1 during axonal guidance processes. However, UNC5H receptors were more recently described as dependence receptors and, as such, able to trigger apoptosis in the absence of netrin-1. They were also proposed as putative tumor suppressors. Here, we show that UNC5H2 physically interacts with the serine/threonine kinase death-associated protein kinase (DAP-kinase) both in cell culture and in embryonic mouse brains. This interaction occurs in part through the respective death domains of UNC5H2 and DAP-kinase. Moreover, part of UNC5H2 proapoptotic activity occurs through this interaction because UNC5H2-induced cell death is partly impaired in the presence of dominant-negative mutants of DAP-kinase or in DAP-kinase mutant murine embryonic fibroblast cells. In the absence of netrin-1, UNC5H2 reduces DAP-kinase autophosphorylation on Ser308 and increases the catalytic activity of the kinase while netrin-1 blocks UNC5H2-dependent DAP-kinase activation. Thus, the pair netrin-1/UNC5H2 may regulate cell fate by controlling the proapoptotic kinase activity of DAP-kinase.

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Authors
Llambi, F., Lourenço, F. C., Gozuacik, D., Guix, C., Pays, L., Del Rio, G., Kimchi, A., & Mehlen, P.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Weizmann Institute of Science (IL)
Corresponding author
Mehlen, Patrick
Venue
The EMBO Journal
Published
2005-02-24
Volume
24
Issue
6
Pages
1192-1201
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W1981720385
Cited by
173
References
31
Citations by year
2026: 2 · 2025: 3 · 2024: 11 · 2023: 7 · 2022: 1 · 2021: 4 · 2020: 14 · 2019: 4 · 2018: 6 · 2017: 3 · 2016: 11 · 2015: 4 · 2014: 7 · 2013: 14 · 2012: 14
FWCI
4.14
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Israel Academy of Sciences and Humanities
  • Israel Science Foundation
  • Ligue Contre le Cancer
  • National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
DAP kinase, dependence receptors, netrin-1, apoptosis, DAPK, death domain, kinase autophosphorylation, tumor suppression, axon guidance, cell fate regulation, embryonic fibroblasts
MeSH terms
Netrin Receptors, Netrin-1, Amino Acid Sequence, Animals, Brain, Catalysis, Cells, Cultured, Fibroblasts, Molecular Sequence Data, Nerve Growth Factors, Phosphorylation, Receptors, Cell Surface, Transcriptional Activation, Apoptosis, Protein Structure, Tertiary, Calcium-Calmodulin-Dependent Protein Kinases, Caspases, Tumor Suppressor Proteins, Immunoprecipitation, Apoptosis Regulatory Proteins, Mice, Death-Associated Protein Kinases

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