The Mathematical Institute, University of Oxford, Eprints Archive

Modelling delta-notch perturbations during zebrafish somitogenesis

Murray, P J and Maini, P. K. and Baker, R. E. (2013) Modelling delta-notch perturbations during zebrafish somitogenesis. Developmental Biology, 373 (2). pp. 407-421.

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Abstract

The discovery over the last 15 years of molecular clocks and gradients in the pre-somitic mesoderm of numerous vertebrate species has added significant weight to Cooke and Zeeman's ‘clock and wavefront’ model of somitogenesis, in which a travelling wavefront determines the spatial position of somite formation and the somitogenesis clock controls periodicity (Cooke and Zeeman, 1976). However, recent high-throughput measurements of spatiotemporal patterns of gene expression in different zebrafish mutant backgrounds allow further quantitative evaluation of the clock and wavefront hypothesis. In this study we describe how our recently proposed model, in which oscillator coupling drives the propagation of an emergent wavefront, can be used to provide mechanistic and testable explanations for the following observed phenomena in zebrafish embryos: (a) the variation in somite measurements across a number of zebrafish mutants; (b) the delayed formation of somites and the formation of ‘salt and pepper’ patterns of gene expression upon disruption of oscillator coupling; and (c) spatial correlations in the ‘salt and pepper’ patterns in Delta-Notch mutants. In light of our results, we propose a number of plausible experiments that could be used to further test the model.

Item Type:Article
Uncontrolled Keywords:Somitogenesis; Delta-Notch signalling; Zebrafish; Salt and pepper; Clock and wavefront model; Mathematical model
Subjects:A - C > Biology and other natural sciences
Research Groups:Centre for Mathematical Biology
ID Code:1650
Deposited By: Philip Maini
Deposited On:10 Jan 2013 08:41
Last Modified:29 May 2015 19:20

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