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Growth and Maturation in Development: A Fly's Perspective.

Renald Delanoue1, Nuria M Romero1,2

  • 1University Côte d'Azur, CNRS, Inserm, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France.

International Journal of Molecular Sciences
|February 20, 2020
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Summary
This summary is machine-generated.

Organismal growth and maturation timing are coordinated by conserved mechanisms. In Drosophila, the peptide Dilp8 and the AstA/KISS system are key coordinators ensuring developmental robustness and target body size.

Keywords:
AstA/KissDrosophilaIIS/IGFgrowthmaturationsteroid hormones

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Area of Science:

  • Developmental Biology
  • Genetics
  • Evolutionary Biology

Background:

  • Adult fitness in mammals and insects relies on balancing energy allocation between juvenile growth and adult reproduction.
  • Organismal growth and maturation timing must be coordinated to achieve target body size and reproductive capability.
  • Recent findings suggest conserved regulatory pathways control growth and maturation in both mammals and Drosophila.

Purpose of the Study:

  • To review advancements in understanding the coordination mechanisms between growth and maturation in Drosophila.
  • To highlight the role of feedback loops involving hormones in this coordination.
  • To discuss novel coordinator systems identified in Drosophila development.

Main Methods:

  • Review of recent scientific literature on Drosophila development.
  • Characterization of feedback mechanisms between maturation and growth hormones.
  • Analysis of the function of the relaxin-like peptide Dilp8.
  • Identification and analysis of the AstA/KISS signaling pathway.

Main Results:

  • Feedback mechanisms between maturation and growth hormones are crucial for developmental coordination.
  • The peptide Dilp8 acts as a central coordinator for juvenile regeneration and maturation timing.
  • A novel coordination mechanism involving the AstA/KISS system has been identified.

Conclusions:

  • Drosophila serves as a model organism to study conserved mechanisms coordinating growth and maturation.
  • Dilp8 and the AstA/KISS system are key components in ensuring developmental robustness.
  • Understanding these coordinators is vital for comprehending how organisms achieve target body size and reproductive readiness.