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Related Experiment Video

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Analysis on gene modular network reveals morphogen-directed development robustness in Drosophila.

Shuo Zhang1,2, Juan Zhao1,3, Xiangdong Lv1,2

  • 1State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 200031 Shanghai, China.

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Summary

This study reveals that the gene regulatory network guiding Drosophila wing development is robust. It can withstand genetic and non-genetic changes, ensuring stable tissue patterning.

Keywords:
BioinformaticsDevelopmental biology

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Area of Science:

  • Developmental Biology
  • Genetics
  • Systems Biology

Background:

  • Genetic robustness ensures phenotypic stability despite perturbations.
  • Morphogens regulate tissue patterns by controlling gene expression.
  • The robustness of morphogen-directed gene regulatory networks is not well understood.

Purpose of the Study:

  • To investigate the genetic robustness of morphogen-directed gene regulatory networks.
  • To construct and analyze a gene modular network (GMN) for Drosophila wing disc development.
  • To understand how this network tolerates genetic and non-genetic perturbations.

Main Methods:

  • Collected RNA-seq data for 4217 morphogen-responsive genes in Drosophila wing discs.
  • Clustered genes into 12 modules and constructed a GMN using mathematical modeling.
  • Performed computational analyses of GMN dynamics and validated findings with biological experiments.

Main Results:

  • The morphogen-directed GMN is robust to most genetic perturbations.
  • Biological experiments confirmed the computational findings on genetic robustness.
  • The GMN also tolerates non-genetic perturbations, such as changes in Hedgehog (Hh) production.

Conclusions:

  • The morphogen-directed GMN in Drosophila wing discs exhibits significant robustness.
  • This robustness is crucial for maintaining stable tissue patterning.
  • The findings highlight the importance of GMNs in developmental stability.