Cited by 155Hedgehog Signaling Pathway StudiesCell death mechanisms and regulationWnt/β-catenin signaling in development and cancer

The Patched dependence receptor triggers apoptosis through a DRAL–caspase-9 complex

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Mille, Frédéric, Thibert, Chantal, Fombonne, Joanna, Rama, Nicolas, Guix, Catherine, Hayashi, Hideki, Corset, Véronique, Reed, John C. +1 more·2009·Nature Cell Biology

Abstract

Sonic hedgehog (Shh) and its main receptor, Patched (Ptc), are implicated in both neural development and tumorigenesis. Besides its classic morphogenic activity, Shh is also a survival factor. Along this line, Ptc has been shown to function as a dependence receptor; it induces apoptosis in the absence of Shh, whereas its pro-apoptotic activity is blocked in the presence of Shh. Here we show that, in the absence of its ligand, Ptc interacts with the adaptor protein DRAL (downregulated in rhabdomyosarcoma LIM-domain protein; also known as FHL2). DRAL is required for the pro-apoptotic activity of Ptc both in immortalized cells and during neural tube development in chick embryos. We demonstrate that, in the absence of Shh, Ptc recruits a protein complex that includes DRAL, one of the caspase recruitment (CARD)-domain containing proteins TUCAN (family member, 8) or NALP1 (NLR family, pyrin domain containing 1) and apical caspase-9. Ptc triggers caspase-9 activation and enhances cell death through a caspase-9-dependent mechanism. Thus, we propose that in the absence of its ligand Shh the dependence receptor Ptc serves as the anchor for a caspase-activating complex that includes DRAL, and caspase-9.

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  • In absence of ligands, PTCH1 interacts with FHL2, favoring assembly of CASP9-activating complex consisting of CARD8 and NEDD4.

    “(2) PTCH1 interacts with the cytosolic adaptor four and a half LIM domains 2 (FHL2; best known as DRAL), hence favoring the assembly of a CASP9-activating complex consisting of caspase recruitment domain family member 8 (CARD8; also known as TUCAN) and neural precursor cell expressed, developmentally down-regulated 4, E3 ubiquitin protein ligase (NEDD4) [352–354]”

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Authors
Mille, F., Thibert, C., Fombonne, J., Rama, N., Guix, C., Hayashi, H., Corset, V., Reed, J. C., & Mehlen, P.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Sanford Burnham Prebys Medical Discovery Institute (US)
Corresponding author
Mehlen, Patrick
Venue
Nature Cell Biology
Published
2009-05-24
Volume
11
Issue
6
Pages
739-746
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2000992130
Cited by
154
References
30
Citations by year
2026: 2 · 2025: 2 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 7 · 2020: 11 · 2019: 8 · 2018: 12 · 2017: 8 · 2016: 11 · 2015: 11 · 2014: 15 · 2013: 14 · 2012: 11
FWCI
5.11
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • National Institute of Allergy and Infectious Diseases (R01AI056324, AI 56324)
  • National Institute of Neurological Disorders and Stroke (R01NS045093, NS-45093)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Hedgehog Signaling Pathway Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
Keywords
Patched receptor, Sonic hedgehog, dependence receptors, apoptosis, FHL2, caspase-9, TUCAN, NALP1, CARD domain, neural tube development, chick embryo, cell survival signaling
MeSH terms
NLR Proteins, Patched Receptors, Animals, Cell Line, Chick Embryo, Humans, Muscle Proteins, Neoplasm Proteins, Receptors, Cell Surface, Transcription Factors, Signal Transduction, Apoptosis, Homeodomain Proteins, Two-Hybrid System Techniques, RNA, Small Interfering, Multiprotein Complexes, Adaptor Proteins, Signal Transducing, Apoptosis Regulatory Proteins, Caspase 9, CARD Signaling Adaptor Proteins, Hedgehog Proteins, LIM-Homeodomain Proteins

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