Cited by 295Developmental Biology and Gene RegulationCraniofacial Disorders and TreatmentsNeurogenesis and neuroplasticity mechanisms

The transcription factor Sox9 is required for cranial neural crest development in Xenopus

Spokony, Rebecca F., Aoki, Yoichiro, Saint-Germain, Natasha, Magner-Fink, Emily, Saint-Jeannet, Jean-Pierre·2002·Development

Abstract

The SOX family of transcription factors has been implicated in cell fate specification during embryogenesis. One member of this family, Sox9, has been shown to regulate both chondrogenesis and sex determination in the mouse embryo. Heterozygous mutations in Sox9 result in Campomelic Dysplasia (CD), a lethal human disorder characterized by autosomal XY sex reversal, severe skeletal malformations and several craniofacial defects. Sox9 is also expressed in neural crest progenitors but very little is known about the function of Sox9 in the neural crest. We have cloned the Xenopus homolog of the Sox9 gene. It is expressed maternally and accumulates shortly after gastrulation at the lateral edges of the neural plate, in the neural crest-forming region. As development proceeds, Sox9 expression persists in migrating cranial crest cells as they populate the pharyngeal arches. Depletion of Sox9 protein in developing embryos, using morpholino antisense oligos, causes a dramatic loss of neural crest progenitors and an expansion of the neural plate. Later during embryogenesis, morpholino-treated embryos have a specific loss or reduction of neural crest-derived skeletal elements, mimicking one aspect of the craniofacial defects observed in CD patients. We propose that Sox9 is an essential component of the regulatory pathway that leads to cranial neural crest formation.

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Crossref · 10.1242/dev.129.2.421

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Authors
Spokony, R. F., Aoki, Y., Saint-Germain, N., Magner-Fink, E., & Saint-Jeannet, J.-P.
Affiliations
  • University of Pennsylvania (US)
  • These authors contributed equally to this work
Corresponding author
Aoki, Yoichiro
Venue
Development
Published
2002-01-15
Volume
129
Issue
2
Pages
421-432
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2103780536
Cited by
295
References
85
Citations by year
2026: 6 · 2025: 5 · 2024: 12 · 2023: 11 · 2022: 12 · 2021: 13 · 2020: 5 · 2019: 10 · 2018: 10 · 2017: 8 · 2016: 10 · 2015: 9 · 2014: 4 · 2013: 8 · 2012: 16
FWCI
7.65
Type
journal article
Language
en
Open access
closed
Locations
  • Development (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Craniofacial Disorders and Treatments
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
SOX9, cranial neural crest, neural crest development, Sox transcription factors, campomelic dysplasia, neural crest progenitors, neural plate, branchial arches, craniofacial defects, skeletal deformities, sex determination, Xenopus embryo, morpholino knockdown
MeSH terms
Snail Family Transcription Factors, Amino Acid Sequence, Animals, Embryo, Nonmammalian, High Mobility Group Proteins, Humans, Microinjections, Molecular Sequence Data, Morphogenesis, Morpholines, Neural Crest, RNA, Messenger, Sex Differentiation, Transcription Factors, Xenopus laevis, Biomarkers, Sequence Alignment, In Situ Hybridization, Gene Expression Regulation, Developmental, Craniofacial Abnormalities, Oligodeoxyribonucleotides, Antisense, Xenopus Proteins, Embryonic Development, SOX9 Transcription Factor

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