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Updated: Aug 9, 2026
09:07
Dissection of Xenopus laevis Neural Crest for in vitro Explant Culture or in vivo Transplantation
Published on: March 5, 2014
Neural induction in Xenopus laevis: evidence for the default model
D C Weinstein1, A Hemmati-Brivanlou
1Department of Molecular Embryology, The Rockefeller University, Box 32, 1230 York Avenue, New York, New York 10021, USA.
Current Opinion in Neurobiology
|February 1, 1997
Summary
Vertebrate ectoderm can become either neural tissue or epidermis. Bone morphogenetic protein 4 (BMP-4) inhibits neuralization and promotes epidermal development, suggesting it is an endogenous epidermal-inducing factor.
Area of Science:
- Developmental biology
- Cell signaling
- Molecular embryology
Background:
- During vertebrate gastrulation, ectoderm cells differentiate into neural or epidermal tissues.
- Soluble factors and cell dissociation can induce neural differentiation in explant cultures.
- These neuralization methods may function by inhibiting an epidermal-inducing signal.
Purpose of the Study:
- To identify the endogenous factor responsible for epidermal induction in vertebrate ectoderm.
- To investigate the role of bone morphogenetic protein 4 (BMP-4) in ectoderm differentiation.
Main Methods:
- Review of existing literature on ectoderm differentiation and neuralization factors.
- Analysis of recent experimental results implicating BMP-4 in ectoderm fate determination.
Main Results:
- Bone morphogenetic protein 4 (BMP-4), a member of the transforming growth factor beta (TGF-beta) superfamily, acts as a potent inhibitor of neural induction.
- BMP-4 promotes epidermal differentiation in ectoderm explants.
- These findings suggest BMP-4 is a key endogenous factor controlling epidermal development.
Conclusions:
- BMP-4 is a critical regulator of ectoderm differentiation, promoting epidermal fate.
- Understanding BMP-4's role provides insights into the molecular mechanisms governing early vertebrate development.
- This research highlights BMP-4 as a potential target for further studies in developmental biology.
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