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A clock and wavefront mechanism for somite formation.

R E Baker¹, S Schnell, P K Maini

¹Centre for Mathematical Biology, Mathematical Institute, 24-29 St Giles', Oxford OX1 3LB, UK.

Developmental Biology

|March 21, 2006

Summary

This study presents a mathematical model of somitogenesis, detailing how FGF8 signaling acts as a wavefront interacting with the segmentation clock to form body segments in vertebrate embryos. The model explains normal development and predicts outcomes of disturbed wavefront progression.

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Area of Science:

Developmental biology
Embryogenesis
Pattern formation

Background:

Somitogenesis is a key, yet unresolved, process in vertebrate embryogenesis.
Segmental patterning occurs sequentially along the antero-posterior axis.
The Clock and Wavefront model is a leading hypothesis for somitogenesis.

Purpose of the Study:

To develop a mathematical formulation of an updated Clock and Wavefront model.
To investigate the role of FGF8 signaling in somitogenesis.
To model segmentation clock and wavefront interactions.

Main Methods:

Mathematical modeling of the Clock and Wavefront model.
Analysis of FGF8 dynamic expression patterns.
Simulation of wavefront progression and its effects.

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Main Results:

FGF8 signaling acts as a determination wavefront, interacting with the segmentation clock.
The model successfully mimics anomalies caused by disturbed wavefront progression.
The model provides testable experimental predictions.

Conclusions:

The updated Clock and Wavefront model provides a robust mathematical framework for understanding somitogenesis.
FGF8 signaling is crucial for gating cells into somites via wavefront-clock interaction.
The model offers insights into developmental anomalies and future research directions.