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Genetic interaction between Sox10 and Zfhx1b during enteric nervous system development
Laure Stanchina1, Tom Van de Putte, Michel Goossens
1INSERM U955, IMRB, Equipe 11, Creteil, F-94010, France.
Developmental Biology
|March 9, 2010
Summary
Coordinated activity of SOX10 and ZFHX1B transcription factors is crucial for enteric nervous system (ENS) development. Their balanced interaction prevents severe ENS defects, ensuring proper neural formation in mice.
Area of Science:
- Developmental biology
- Genetics
- Neuroscience
Background:
- SOX10 and ZFHX1B transcription factors are implicated in human developmental disorders affecting the enteric nervous system (ENS).
- While SOX10 function is understood, ZFHX1B's role in ENS development remains largely unknown.
- Mutations in these genes cause Waardenburg-Hirschsprung disease and Mowat-Wilson syndrome, respectively.
Purpose of the Study:
- To elucidate the expression profile and genetic interactions of Zfhx1b with Sox10 during mouse ENS development.
- To understand the functional significance of the interplay between SOX10 and ZFHX1B in ENS formation.
Main Methods:
- Analysis of Zfhx1b expression patterns in developing mouse ENS.
- Phenotypic analysis of Sox10;Zfhx1b double mutant mice.
- Assessment of enteric progenitor proliferation and neuronal differentiation.
Main Results:
- Sox10 and Zfhx1b exhibit coordinated expression and interaction during mouse ENS development.
- Double mutants display more severe ENS defects compared to single mutants.
- These defects stem from reduced enteric progenitor proliferation and accelerated neuronal differentiation from embryonic day 11.5.
Conclusions:
- A balanced and coordinated interaction between SOX10 and ZFHX1B is essential for normal ENS development.
- Disruption of this interaction leads to significant ENS abnormalities due to altered progenitor cell dynamics.
- These findings enhance understanding of ENS defects in both mouse models and human patients with SOX10 and ZFHX1B mutations.
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