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Updated: Jul 21, 2026
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Neural Explant Cultures from Xenopus laevis
Published on: October 15, 2012
Inhibition of neural crest migration in Xenopus using antisense slug RNA
1Environmental, Population, and Organismic Biology, University of Colorado at Boulder, Boulder, Colorado 80309, USA.
Developmental Biology
|August 24, 1999
Summary
In Xenopus, the transcription factor Slug is essential for neural crest cell migration and development. Slug and Snail genes are functionally redundant and maintain each other
Area of Science:
- Developmental Biology
- Molecular Biology
- Genetics
Background:
- The zinc finger transcription factor Slug has been assumed essential for neural crest migration based on chick studies.
- However, Slug is not expressed in premigratory neural crest in mice, and Slug-deficient mice exhibit normal neural crest formation.
Purpose of the Study:
- To investigate the role of Slug in neural crest development in Xenopus laevis.
- To determine the relationship between Slug and the related gene Snail in neural crest migration.
Main Methods:
- Injection of XSlug antisense RNA into Xenopus embryos.
- Tissue transplantation experiments.
- Analysis of neural crest markers (XSnail, XTwist) and cartilage formation.
- Rescue experiments using XSlug or XSnail mRNA injection.
Main Results:
- XSlug antisense RNA reduced XSlug and XSnail expression, inhibited neural crest cell migration, and affected neural crest derivatives, particularly rostral cartilage.
- XTwist expression remained unaffected.
- Injection of XSlug or XSnail mRNA rescued the observed defects.
Conclusions:
- XSlug is required for neural crest cell migration in Xenopus.
- XSlug and XSnail exhibit functional redundancy in neural crest development.
- Both XSlug and XSnail are necessary for maintaining each other's expression during Xenopus neural crest development.
