Cited by 103Hedgehog Signaling Pathway StudiesGenetic and Kidney Cyst DiseasesDevelopmental Biology and Gene Regulation

Tubby-like protein 3 (TULP3) regulates patterning in the mouse embryo through inhibition of Hedgehog signaling

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Norman, Ryan X., Ko, Hyuk W., Huang, Viola, Eun, Christine M., Abler, Lisa L., Zhang, Zhen, Sun, Xin, Eggenschwiler, Jonathan T.·2009·Human Molecular Genetics

Abstract

Tubby-like protein 3 (TULP3) is required for proper embryonic development in mice. Disruption of mouse Tulp3 results in morphological defects in the embryonic craniofacial regions, the spinal neural tube and the limbs. Here, we show that TULP3 functions as a novel negative regulator of Sonic hedgehog (Shh) signaling in the mouse. In Tulp3 mutants, ventral cell types in the lumbar neural tube, which acquire their identities in response to Shh signaling, are ectopically specified at the expense of dorsal cell types. Genetic epistasis experiments show that this ventralized phenotype occurs independently of Shh and the transmembrane protein Smoothened, but it is dependent on the transcription factor Gli2. The ventralized phenotype is also dependent on the kinesin II subunit Kif3A, which is required for intraflagellar transport and ciliogenesis. In addition, TULP3 is required for proper Shh-dependent limb patterning and for maintaining the correct balance between differentiation and proliferation in the neural tube. Finally, the localization of TULP3 to the tips of primary cilia raises the possibility that it regulates the Hedgehog pathway within this structure.

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Crossref · 10.1093/hmg/ddp113

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  • Mutations in genes encoding TULP3 or IFT-A subunits phenocopy Gpr161 mutants by increasing HH signalling in the caudal neural tube.

    “Interestingly, mutations in the genes encoding TULP3 or IFT-A subunits phenocopy Gpr161 mutants by increasing HH signalling in the caudal neural tube 58, 128–131.”

    From Cellular signalling by primary cilia in development, organ function and disease (2019) · cites this paper as [130]

    In “TULP3 regulates cell identity in the spinal neural tube” (page unavailable), the paper reports elevated Shh pathway activity in Tulp3 mutants, with effects limited to the lumbar neural tube; it also notes similar patterning effects in Thm1 mutants. Our copy does not compare either mutant with Gpr161 mutants or establish the claim for IFT-A subunits generally. (LLM, conf=0.86)

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Authors
Norman, R. X., Ko, H. W., Huang, V., Eun, C. M., Abler, L. L., Zhang, Z., Sun, X., & Eggenschwiler, J. T.
Affiliations
  • Princeton University (US)
  • University of Wisconsin–Madison (US)
Corresponding author
Eggenschwiler, Jonathan T.
Venue
Human Molecular Genetics
Published
2009-03-12
Volume
18
Issue
10
Pages
1740-1754
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2170193319
Cited by
103
References
125
Citations by year
2026: 3 · 2025: 6 · 2024: 9 · 2023: 5 · 2022: 6 · 2021: 7 · 2020: 10 · 2019: 6 · 2018: 5 · 2017: 5 · 2016: 7 · 2015: 5 · 2014: 4 · 2013: 4 · 2012: 9
FWCI
2.82
Type
journal article
Language
en
Open access
Locations
  • Human Molecular Genetics (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • New Jersey Commission on Spinal Cord Research
  • National Institutes of Health (IA 52242)
  • Directorate for Biological Sciences
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD045522, HD045522, HD050761, R01HD050761)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Hedgehog Signaling Pathway Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
TULP3, Sonic hedgehog signaling, Hedgehog signaling, neural tube patterning, GLI2, KIF3A, kinesin-2, intraflagellar transport, ciliogenesis, primary cilia, limb patterning, craniofacial defects, Smoothened, mouse embryo
MeSH terms
Animals, Embryo, Mammalian, Female, Humans, Male, Mice, Inbred C3H, Mice, Transgenic, Mutation, Proteins, Spinal Cord, Signal Transduction, Down-Regulation, Gene Expression Regulation, Developmental, Body Patterning, Intercellular Signaling Peptides and Proteins, Embryonic Development, Intracellular Signaling Peptides and Proteins, Mice, Hedgehog Proteins, Neural Tube

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