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Related Experiment Video

Updated: May 18, 2026

Zebrafish Whole Mount High-Resolution Double Fluorescent In Situ Hybridization
12:31

Zebrafish Whole Mount High-Resolution Double Fluorescent In Situ Hybridization

Published on: March 25, 2009

Repressor dimerization in the zebrafish somitogenesis clock.

Olivier Cinquin1

  • 1Centre for Mathematics and Physics in the Life Sciences and Experimental Biology, University College London, London, United Kingdom. cinquin@wisc.edu

Plos Computational Biology
|February 20, 2007
PubMed
Summary
This summary is machine-generated.

Computational models reveal how zebrafish embryo segmentation clock oscillations are generated. The study suggests a Her1-Her7 heterodimer and explains gene expression patterns, advancing understanding of vertebrate development.

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Area of Science:

  • Developmental biology
  • Computational modeling
  • Genetics

Background:

  • The somitogenesis clock regulates vertebrate embryo segmentation.
  • Existing models of Her protein self-repression do not fully explain gene expression patterns or knockdown phenotypes.

Purpose of the Study:

  • To computationally investigate gene regulatory networks in the zebrafish somitogenesis clock.
  • To explain the spatiotemporal patterns of gene expression and knockdown phenotypes.
  • To elucidate the role of Her proteins and their interactions in segmentation.

Main Methods:

  • Computational analysis of dimerization possibilities among Her transcriptional repressors.
  • Modeling gene regulatory networks to reproduce experimental observations.
  • Simulating knockdown phenotypes and spatiotemporal gene expression patterns.

Main Results:

  • Developed computational networks that accurately reproduce Her protein knockdown phenotypes.
  • Identified a potential Her1-Her7 heterodimer as a key component of the clock mechanism.
  • Successfully modeled the spatiotemporal gene expression waves characteristic of the zebrafish somitogenesis clock.
  • Showcased the networks' ability to account for FGF signaling perturbations.

Conclusions:

  • The proposed computational networks provide a robust framework for understanding the zebrafish somitogenesis clock.
  • The findings highlight the significance of Her protein dimerization, particularly the Her1-Her7 heterodimer.
  • This work offers new insights into the interplay between clock oscillations, positional information, and FGF signaling in embryonic segmentation.